Public bug reported:

System Config : Dell precision M4800, 16GB RAM, i7 processor, AMD RAdeon
GPU, Ubuntu 18.0.4

solomon@solomon:~$ lsmod
Module                  Size  Used by
pci_stub               16384  1
vboxpci                24576  0
vboxnetadp             28672  0
vboxnetflt             28672  0
vboxdrv               471040  3 vboxpci,vboxnetadp,vboxnetflt
ccm                    20480  6
amdgpu               4112384  0
amd_iommu_v2           20480  1 amdgpu
gpu_sched              32768  1 amdgpu
intel_rapl_msr         20480  0
intel_rapl_common      24576  1 intel_rapl_msr
x86_pkg_temp_thermal    20480  0
intel_powerclamp       20480  0
coretemp               20480  0
kvm_intel             245760  0
kvm                   655360  1 kvm_intel
irqbypass              16384  1 kvm
mei_hdcp               24576  0
crct10dif_pclmul       16384  1
crc32_pclmul           16384  0
dell_laptop            20480  0
ghash_clmulni_intel    16384  0
uvcvideo               94208  0
dell_smm_hwmon         20480  0
snd_soc_rt5640        143360  0
snd_hda_codec_realtek   118784  1
v4l2_common            16384  1 uvcvideo
snd_hda_codec_generic    81920  1 snd_hda_codec_realtek
videobuf2_vmalloc      20480  1 uvcvideo
ledtrig_audio          16384  3 
snd_hda_codec_generic,snd_hda_codec_realtek,dell_laptop
snd_soc_rl6231         20480  1 snd_soc_rt5640
videobuf2_memops       20480  1 videobuf2_vmalloc
snd_hda_codec_hdmi     57344  1
aesni_intel           372736  4
radeon               1454080  32
iwldvm                233472  0
snd_hda_intel          53248  8
videobuf2_v4l2         24576  1 uvcvideo
aes_x86_64             20480  1 aesni_intel
snd_intel_nhlt         20480  1 snd_hda_intel
videobuf2_common       49152  2 videobuf2_v4l2,uvcvideo
snd_soc_core          237568  1 snd_soc_rt5640
crypto_simd            16384  1 aesni_intel
mac80211              847872  1 iwldvm
snd_hda_codec         131072  4 
snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
videodev              208896  4 
v4l2_common,videobuf2_v4l2,uvcvideo,videobuf2_common
snd_compress           24576  1 snd_soc_core
cryptd                 24576  2 crypto_simd,ghash_clmulni_intel
ac97_bus               16384  1 snd_soc_core
mc                     53248  4 
videodev,videobuf2_v4l2,uvcvideo,videobuf2_common
glue_helper            16384  1 aesni_intel
snd_hda_core           90112  5 
snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
ttm                   102400  2 amdgpu,radeon
libarc4                16384  1 mac80211
snd_pcm_dmaengine      16384  1 snd_soc_core
snd_hwdep              20480  1 snd_hda_codec
drm_kms_helper        180224  2 amdgpu,radeon
intel_cstate           20480  0
snd_pcm               102400  7 
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_soc_rt5640,snd_soc_core,snd_hda_core,snd_pcm_dmaengine
drm                   491520  21 gpu_sched,drm_kms_helper,amdgpu,radeon,ttm
dell_wmi               20480  0
intel_rapl_perf        20480  0
snd_seq_midi           20480  0
dell_smbios            28672  2 dell_wmi,dell_laptop
i2c_algo_bit           16384  2 amdgpu,radeon
snd_seq_midi_event     16384  1 snd_seq_midi
input_leds             16384  0
joydev                 28672  0
dcdbas                 20480  1 dell_smbios
fb_sys_fops            16384  1 drm_kms_helper
snd_rawmidi            36864  1 snd_seq_midi
serio_raw              20480  0
syscopyarea            16384  1 drm_kms_helper
sparse_keymap          16384  1 dell_wmi
iwlwifi               348160  1 iwldvm
snd_seq                69632  2 snd_seq_midi,snd_seq_midi_event
sysfillrect            16384  1 drm_kms_helper
wmi_bmof               16384  0
dell_wmi_descriptor    20480  2 dell_wmi,dell_smbios
sysimgblt              16384  1 drm_kms_helper
snd_seq_device         16384  3 snd_seq,snd_seq_midi,snd_rawmidi
snd_timer              36864  2 snd_seq,snd_pcm
snd                    86016  29 
snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
cfg80211              704512  3 iwldvm,iwlwifi,mac80211
mei_me                 40960  1
soundcore              16384  1 snd
mei                   102400  3 mei_hdcp,mei_me
lpc_ich                24576  0
ie31200_edac           16384  0
dell_rbtn              20480  1
dell_smo8800           20480  0
mac_hid                16384  0
sch_fq_codel           20480  6
cuse                   16384  3
parport_pc             40960  0
ppdev                  24576  0
lp                     20480  0
parport                53248  3 parport_pc,lp,ppdev
ip_tables              32768  0
x_tables               40960  1 ip_tables
autofs4                45056  2
sdhci_pci              45056  0
ahci                   40960  1
psmouse               151552  0
cqhci                  28672  1 sdhci_pci
e1000e                253952  0
sdhci                  57344  1 sdhci_pci
libahci                32768  1 ahci
wmi                    32768  4 
dell_wmi,wmi_bmof,dell_smbios,dell_wmi_descriptor
video                  49152  2 dell_wmi,dell_laptop
solomon@solomon:~$ lsmod | grep radeon
radeon               1454080  32
ttm                   102400  2 amdgpu,radeon
drm_kms_helper        180224  2 amdgpu,radeon
drm                   491520  21 gpu_sched,drm_kms_helper,amdgpu,radeon,ttm
i2c_algo_bit           16384  2 amdgpu,radeon
solomon@solomon:~$ sudo vim
solomon@solomon:~$ lspci -nnk | egrep -i 
'3d|aphics|display|nouveau|nvidia|radeon|trident|vesa|vga'; uname -a; Xorg 
-version; sudo apt-get update; sudo apt-get install mesa-utils hardinfo fbset 
nux-tools inxi; inxi -F; sudo fbset -i; apt-cache show xserver-xorg | grep 
Version; xrandr; fglrxinfo; nvidia-settings -g |head -n 30 ; sudo lshw -short; 
sudo lshw -C display; dpkg -l | egrep -i 
'fgl|intel|mesa|mesa-utils|nvidia|nouveau|radeon|trident|video-ati'; cat 
/etc/lsb-release; dmesg | egrep -i  
'abort|ailed|bug|error|fail|fgl|GLX|GPU|intel|missing|nouveau|NVIDIA|radeon|segment|trident|VESA|VGA|wfb|\(EE\)|\(WW\)';
 cat /proc/cpuinfo | grep -I model; cat /var/log/Xorg.0.log | egrep -i 
'abort|ailed|bug|display|error|fail|fgl|GLX|GPU|intel|issing|nouveau|nvidia|radeon|segment|trident|VESA|VGA|wfb|\(EE\)|\(WW\)';
 sudo dmidecode|egrep 'anufact|roduct|erial|elease'; cat /etc/X11/xorg.conf; 
/usr/lib/nux/unity_support_test -p; ubuntu-support-status ; sudo lsmod
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. 
[AMD/ATI] Venus XT [Radeon HD 8870M / R9 M270X/M370X] [1002:6821]
        Kernel driver in use: radeon
        Kernel modules: radeon, amdgpu
01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Cape 
Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] [1002:aab0]
        Subsystem: Dell Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 
Series] [1028:15cc]
Linux solomon 5.3.0-51-generic #44~18.04.2-Ubuntu SMP Thu Apr 23 14:27:18 UTC 
2020 x86_64 x86_64 x86_64 GNU/Linux
/usr/lib/xorg/Xorg.wrap: Only console users are allowed to run the X server
[sudo] password for solomon: 
Hit:1 http://in.archive.ubuntu.com/ubuntu bionic InRelease                     
Get:2 http://packages.microsoft.com/repos/vscode stable InRelease [3,959 B]    
Get:3 http://in.archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]   
Get:4 http://dl.google.com/linux/chrome/deb stable InRelease [1,811 B]         
Get:5 http://packages.microsoft.com/repos/vscode stable/main amd64 Packages 
[180 kB]
Get:6 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]    
Get:7 http://dl.google.com/linux/chrome/deb stable/main amd64 Packages [1,128 B]
Get:8 https://artifacts.elastic.co/packages/7.x/apt stable InRelease [10.4 kB] 
Err:8 https://artifacts.elastic.co/packages/7.x/apt stable InRelease           
  The following signatures couldn't be verified because the public key is not 
available: NO_PUBKEY D27D666CD88E42B4
Get:9 http://download.virtualbox.org/virtualbox/debian bionic InRelease [4,432 
B]
Get:10 http://download.virtualbox.org/virtualbox/debian bionic/contrib amd64 
Packages [1,921 B]
Get:11 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/ InRelease 
[3,626 B]
Err:11 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/ InRelease   
  The following signatures couldn't be verified because the public key is not 
available: NO_PUBKEY 51716619E084DAB9
Get:12 http://in.archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:13 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages 
[710 kB]
Get:14 http://in.archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages 
[676 kB]
Get:15 http://in.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages 
[933 kB]
Get:16 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages 
[467 kB]
Get:17 http://in.archive.ubuntu.com/ubuntu bionic-updates/main Translation-en 
[319 kB]
Get:18 http://in.archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 
Metadata [303 kB]
Get:19 http://security.ubuntu.com/ubuntu bionic-security/main Translation-en 
[226 kB]
Get:20 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 
Packages [1,068 kB]
Get:21 http://security.ubuntu.com/ubuntu bionic-security/main amd64 DEP-11 
Metadata [40.7 kB]
Get:22 http://security.ubuntu.com/ubuntu bionic-security/universe i386 Packages 
[621 kB]
Get:23 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 
Packages [662 kB]
Get:24 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe i386 
Packages [1,014 kB]
Get:25 http://security.ubuntu.com/ubuntu bionic-security/universe 
Translation-en [220 kB]
Get:26 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 DEP-11 
Metadata [42.1 kB]
Get:27 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 DEP-11 
Metadata [273 kB]
Get:28 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 
Packages [15.5 kB]
Get:29 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse i386 
Packages [8,720 B]
Get:30 http://in.archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 
DEP-11 Metadata [2,468 B]
Get:31 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 
DEP-11 Metadata [7,968 B]
Get:32 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 
Packages [7,392 B]
Get:33 http://security.ubuntu.com/ubuntu bionic-security/multiverse i386 
Packages [4,288 B]
Get:34 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 
DEP-11 Metadata [2,464 B]
Reading package lists... Done                                                  
W: GPG error: https://artifacts.elastic.co/packages/7.x/apt stable InRelease: 
The following signatures couldn't be verified because the public key is not 
available: NO_PUBKEY D27D666CD88E42B4
E: The repository 'https://artifacts.elastic.co/packages/7.x/apt stable 
InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore 
disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration 
details.
N: Skipping acquire of configured file 'contrib/binary-i386/Packages' as 
repository 'http://download.virtualbox.org/virtualbox/debian bionic InRelease' 
doesn't support architecture 'i386'
W: GPG error: https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/ 
InRelease: The following signatures couldn't be verified because the public key 
is not available: NO_PUBKEY 51716619E084DAB9
E: The repository 'https://cloud.r-project.org/bin/linux/ubuntu bionic-cran35/ 
InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore 
disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration 
details.
Reading package lists... Done
Building dependency tree       
Reading state information... Done
mesa-utils is already the newest version (8.4.0-1).
The following packages were automatically installed and are no longer required:
  efibootmgr libfwup1
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  gawk hddtemp lm-sensors
Suggested packages:
  gawk-doc fancontrol read-edid i2c-tools
The following NEW packages will be installed:
  fbset gawk hardinfo hddtemp inxi lm-sensors nux-tools
0 upgraded, 7 newly installed, 0 to remove and 51 not upgraded.
Need to get 1,127 kB of archives.
After this operation, 3,924 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://in.archive.ubuntu.com/ubuntu bionic/main amd64 gawk amd64 
1:4.1.4+dfsg-1build1 [401 kB]
Get:2 http://in.archive.ubuntu.com/ubuntu bionic/main amd64 fbset amd64 2.1-30 
[120 kB]
Get:3 http://in.archive.ubuntu.com/ubuntu bionic/universe amd64 hardinfo amd64 
0.5.1+git20180227-1 [319 kB]
Get:4 http://in.archive.ubuntu.com/ubuntu bionic-updates/universe amd64 
nux-tools amd64 4.0.8+18.04.20180622.2-0ubuntu1 [10.4 kB]
Get:5 http://in.archive.ubuntu.com/ubuntu bionic/universe amd64 hddtemp amd64 
0.3-beta15-53 [47.7 kB]
Get:6 http://in.archive.ubuntu.com/ubuntu bionic/universe amd64 inxi all 
2.3.56-1 [143 kB]
Get:7 http://in.archive.ubuntu.com/ubuntu bionic/universe amd64 lm-sensors 
amd64 1:3.4.0-4 [85.5 kB]
Fetched 1,127 kB in 14s (80.4 kB/s)                                            
Preconfiguring packages ...
Selecting previously unselected package gawk.
(Reading database ... 377707 files and directories currently installed.)
Preparing to unpack .../0-gawk_1%3a4.1.4+dfsg-1build1_amd64.deb ...
Unpacking gawk (1:4.1.4+dfsg-1build1) ...
Selecting previously unselected package fbset.
Preparing to unpack .../1-fbset_2.1-30_amd64.deb ...
Unpacking fbset (2.1-30) ...
Selecting previously unselected package hardinfo.
Preparing to unpack .../2-hardinfo_0.5.1+git20180227-1_amd64.deb ...
Unpacking hardinfo (0.5.1+git20180227-1) ...
Selecting previously unselected package nux-tools.
Preparing to unpack .../3-nux-tools_4.0.8+18.04.20180622.2-0ubuntu1_amd64.deb 
...
Unpacking nux-tools (4.0.8+18.04.20180622.2-0ubuntu1) ...
Selecting previously unselected package hddtemp.
Preparing to unpack .../4-hddtemp_0.3-beta15-53_amd64.deb ...
Unpacking hddtemp (0.3-beta15-53) ...
Selecting previously unselected package inxi.
Preparing to unpack .../5-inxi_2.3.56-1_all.deb ...
Unpacking inxi (2.3.56-1) ...
Selecting previously unselected package lm-sensors.
Preparing to unpack .../6-lm-sensors_1%3a3.4.0-4_amd64.deb ...
Unpacking lm-sensors (1:3.4.0-4) ...
Setting up hardinfo (0.5.1+git20180227-1) ...
Setting up hddtemp (0.3-beta15-53) ...
Setting up nux-tools (4.0.8+18.04.20180622.2-0ubuntu1) ...
Setting up gawk (1:4.1.4+dfsg-1build1) ...
Setting up lm-sensors (1:3.4.0-4) ...
Created symlink /etc/systemd/system/multi-user.target.wants/lm-sensors.service 
→ /lib/systemd/system/lm-sensors.service.
Setting up inxi (2.3.56-1) ...
Setting up fbset (2.1-30) ...
Processing triggers for ureadahead (0.100.0-21) ...
ureadahead will be reprofiled on next reboot
Processing triggers for desktop-file-utils (0.23-1ubuntu3.18.04.2) ...
Processing triggers for systemd (237-3ubuntu10.39) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for gnome-menus (3.13.3-11ubuntu1.1) ...
Processing triggers for mime-support (3.60ubuntu1) ...
System:    Host: solomon Kernel: 5.3.0-51-generic x86_64 bits: 64 Desktop: 
Gnome 3.28.4
           Distro: Ubuntu 18.04.4 LTS
Machine:   Device: laptop System: Dell product: Precision M4800 v: 00 serial: 
N/A
           Mobo: Dell model: 0T3YTY v: A00 serial: N/A BIOS: Dell v: A18 date: 
12/22/2016
Battery    BAT0: charge: 25.8 Wh 41.9% condition: 61.5/66.6 Wh (92%)
CPU:       Quad core Intel Core i7-4700MQ (-MT-MCP-) cache: 6144 KB
           clock speeds: max: 3400 MHz 1: 1596 MHz 2: 1596 MHz 3: 1596 MHz 4: 
1596 MHz 5: 1596 MHz 6: 1598 MHz
           7: 1597 MHz 8: 1596 MHz
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Venus XT [Radeon HD 8870M / 
R9 M270X/M370X]
           Display Server: x11 (X.Org 1.20.5 ) driver: radeon Resolution: 
1920x1080@60.04hz
           OpenGL: renderer: AMD VERDE (DRM 2.50.0, 5.3.0-51-generic, LLVM 
9.0.0) version: 4.5 Mesa 19.2.8
Audio:     Card-1 Intel 8 Series/C220 Series High Definition Audio Controller 
driver: snd_hda_intel
           Card-2 Advanced Micro Devices [AMD/ATI] Cape Verde/Pitcairn HDMI 
Audio [Radeon HD 7700/7800 Series]
           driver: snd_hda_intel
           Sound: Advanced Linux Sound Architecture v: k5.3.0-51-generic
Network:   Card-1: Intel Ethernet Connection I217-LM driver: e1000e
           IF: eno1 state: down mac: ec:f4:bb:6c:da:5d
           Card-2: Intel Centrino Ultimate-N 6300 driver: iwlwifi
           IF: wlp3s0 state: down mac: 3c:a9:f4:a6:c9:5c
Drives:    HDD Total Size: 1000.2GB (3.8% used)
           ID-1: /dev/sda model: ST1000LM014 size: 1000.2GB
Partition: ID-1: / size: 916G used: 36G (5%) fs: ext4 dev: /dev/sda1
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 49.0C mobo: N/A gpu: 49.0
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 328 Uptime: 30 min Memory: 2273.1/15952.4MB Client: Shell 
(bash) inxi: 2.3.56 

mode "1920x1080"
    geometry 1920 1080 1920 1080 32
    timings 0 0 0 0 0 0 0
    accel true
    rgba 8/16,8/8,8/0,0/0
endmode

Frame buffer device information:
    Name        : radeondrmfb
    Address     : 0
    Size        : 8294400
    Type        : PACKED PIXELS
    Visual      : TRUECOLOR
    XPanStep    : 1
    YPanStep    : 1
    YWrapStep   : 0
    LineLength  : 7680
    Accelerator : No
Version: 1:7.7+19ubuntu7.1
Version: 1:7.7+19ubuntu7
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
LVDS connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 
344mm x 194mm
   1920x1080     60.04*+  40.03  
   1680x1050     60.00  
   1400x1050     60.00  
   1280x1024     59.95  
   1440x900      59.99  
   1280x960      59.99  
   1280x854      59.95  
   1280x800      59.96  
   1280x720      59.97  
   1152x768      59.95  
   1024x768      59.95  
   800x600       59.96  
   848x480       59.94  
   720x480       59.94  
   640x480       59.94  
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
VGA-0 disconnected (normal left inverted right x axis y axis)
fglrxinfo: command not found

Command 'nvidia-settings' not found, but can be installed with:

sudo apt install nvidia-settings

H/W path         Device      Class          Description
=======================================================
                             system         Precision M4800 (05CC)
/0                           bus            0T3YTY
/0/0                         memory         64KiB BIOS
/0/43                        processor      Intel(R) Core(TM) i7-4700MQ CPU @ 
2.40GHz
/0/43/44                     memory         256KiB L1 cache
/0/43/45                     memory         1MiB L2 cache
/0/43/46                     memory         6MiB L3 cache
/0/47                        memory         16GiB System Memory
/0/47/0                      memory         8GiB SODIMM DDR3 Synchronous 1600 
MHz (0.6 ns)
/0/47/1                      memory         DIMM [empty]
/0/47/2                      memory         8GiB SODIMM DDR3 Synchronous 1600 
MHz (0.6 ns)
/0/47/3                      memory         DIMM [empty]
/0/100                       bridge         Xeon E3-1200 v3/4th Gen Core 
Processor DRAM Controller
/0/100/1                     bridge         Xeon E3-1200 v3/4th Gen Core 
Processor PCI Express x16 Controller
/0/100/1/0                   display        Venus XT [Radeon HD 8870M / R9 
M270X/M370X]
/0/100/1/0.1                 multimedia     Cape Verde/Pitcairn HDMI Audio 
[Radeon HD 7700/7800 Series]
/0/100/14                    bus            8 Series/C220 Series Chipset Family 
USB xHCI
/0/100/14/0      usb3        bus            xHCI Host Controller
/0/100/14/1      usb4        bus            xHCI Host Controller
/0/100/16                    communication  8 Series/C220 Series Chipset Family 
MEI Controller #1
/0/100/19        eno1        network        Ethernet Connection I217-LM
/0/100/1a                    bus            8 Series/C220 Series Chipset Family 
USB EHCI #2
/0/100/1a/1      usb1        bus            EHCI Host Controller
/0/100/1a/1/1                bus            USB hub
/0/100/1a/1/1/5              multimedia     Laptop_Integrated_Webcam_HD
/0/100/1b                    multimedia     8 Series/C220 Series Chipset High 
Definition Audio Controller
/0/100/1c                    bridge         8 Series/C220 Series Chipset Family 
PCI Express Root Port #1
/0/100/1c.2                  bridge         8 Series/C220 Series Chipset Family 
PCI Express Root Port #3
/0/100/1c.2/0    wlp3s0      network        Centrino Ultimate-N 6300
/0/100/1c.3                  bridge         8 Series/C220 Series Chipset Family 
PCI Express Root Port #4
/0/100/1c.4                  bridge         8 Series/C220 Series Chipset Family 
PCI Express Root Port #5
/0/100/1c.6                  bridge         8 Series/C220 Series Chipset Family 
PCI Express Root Port #7
/0/100/1c.7                  bridge         8 Series/C220 Series Chipset Family 
PCI Express Root Port #8
/0/100/1c.7/0                generic        SD/MMC Card Reader Controller
/0/100/1d                    bus            8 Series/C220 Series Chipset Family 
USB EHCI #1
/0/100/1d/1      usb2        bus            EHCI Host Controller
/0/100/1d/1/1                bus            USB hub
/0/100/1d/1/1/8              generic        5880
/0/100/1f                    bridge         QM87 Express LPC Controller
/0/100/1f.2                  storage        8 Series/C220 Series Chipset Family 
6-port SATA Controller 1 [AHCI mode]
/0/100/1f.3                  bus            8 Series/C220 Series Chipset Family 
SMBus Controller
/0/1             scsi0       storage        
/0/1/0.0.0       /dev/sda    disk           1TB ST1000LM014-1EJ1
/0/1/0.0.0/1     /dev/sda1   volume         931GiB EXT4 volume
/0/2             scsi1       storage        
/0/2/0.0.0       /dev/cdrom  disk           DVD+-RW UJ8FB
/1                           power          DELL J5MXY5A
  *-display                 
       description: VGA compatible controller
       product: Venus XT [Radeon HD 8870M / R9 M270X/M370X]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=radeon latency=0
       resources: irq:39 memory:e0000000-efffffff memory:f7e00000-f7e3ffff 
ioport:e000(size=256) memory:c0000-dffff
ii  gir1.2-ibus-1.0:amd64                      1.5.17-3ubuntu5.3                
                amd64        Intelligent Input Bus - introspection data
ii  i965-va-driver:amd64                       2.1.0-0ubuntu1                   
                amd64        VAAPI driver for Intel G45 & HD Graphics family
ii  ibus                                       1.5.17-3ubuntu5.3                
                amd64        Intelligent Input Bus - core
ii  ibus-gtk:amd64                             1.5.17-3ubuntu5.3                
                amd64        Intelligent Input Bus - GTK+2 support
ii  ibus-gtk3:amd64                            1.5.17-3ubuntu5.3                
                amd64        Intelligent Input Bus - GTK+3 support
ii  intel-microcode                            3.20191115.1ubuntu0.18.04.2      
                amd64        Processor microcode firmware for Intel CPUs
ii  iucode-tool                                2.3.1-1                          
                amd64        Intel processor microcode tool
ii  libcilkrts5:amd64                          7.5.0-3ubuntu1~18.04             
                amd64        Intel Cilk Plus language extensions (runtime)
ii  libdrm-intel1:amd64                        2.4.99-1ubuntu1~18.04.2          
                amd64        Userspace interface to intel-specific kernel DRM 
services -- runtime
ii  libdrm-nouveau2:amd64                      2.4.99-1ubuntu1~18.04.2          
                amd64        Userspace interface to nouveau-specific kernel DRM 
services -- runtime
ii  libdrm-radeon1:amd64                       2.4.99-1ubuntu1~18.04.2          
                amd64        Userspace interface to radeon-specific kernel DRM 
services -- runtime
ii  libegl-mesa0:amd64                         19.2.8-0ubuntu0~18.04.3          
                amd64        free implementation of the EGL API -- Mesa vendor 
library
ii  libegl1-mesa:amd64                         19.2.8-0ubuntu0~18.04.3          
                amd64        transitional dummy package
ii  libegl1-mesa-dev:amd64                     19.2.8-0ubuntu0~18.04.3          
                amd64        free implementation of the EGL API -- development 
files
ii  libgl1-mesa-dev:amd64                      19.2.8-0ubuntu0~18.04.3          
                amd64        free implementation of the OpenGL API -- GLX 
development files
ii  libgl1-mesa-dri:amd64                      19.2.8-0ubuntu0~18.04.3          
                amd64        free implementation of the OpenGL API -- DRI 
modules
ii  libgl1-mesa-glx:amd64                      19.2.8-0ubuntu0~18.04.3          
                amd64        transitional dummy package
ii  libglapi-mesa:amd64                        19.2.8-0ubuntu0~18.04.3          
                amd64        free implementation of the GL API -- shared library
ii  libgles2-mesa-dev:amd64                    19.2.8-0ubuntu0~18.04.3          
                amd64        free implementation of the OpenGL|ES 2.x API -- 
development files
ii  libglu1-mesa:amd64                         9.0.0-2.1build1                  
                amd64        Mesa OpenGL utility library (GLU)
ii  libglu1-mesa-dev:amd64                     9.0.0-2.1build1                  
                amd64        Mesa OpenGL utility library -- development files
ii  libglx-mesa0:amd64                         19.2.8-0ubuntu0~18.04.3          
                amd64        free implementation of the OpenGL API -- GLX 
vendor library
ii  libibus-1.0-5:amd64                        1.5.17-3ubuntu5.3                
                amd64        Intelligent Input Bus - shared library
ii  libibus-1.0-dev:amd64                      1.5.17-3ubuntu5.3                
                amd64        Intelligent Input Bus - development file
ii  libmpx2:amd64                              8.4.0-1ubuntu1~18.04             
                amd64        Intel memory protection extensions (runtime)
ii  libosmesa6:amd64                           19.2.8-0ubuntu0~18.04.3          
                amd64        Mesa Off-screen rendering extension
ii  libwayland-egl1-mesa:amd64                 19.2.8-0ubuntu0~18.04.3          
                amd64        transitional dummy package
ii  mesa-common-dev:amd64                      19.2.8-0ubuntu0~18.04.3          
                amd64        Developer documentation for Mesa
ii  mesa-utils                                 8.4.0-1                          
                amd64        Miscellaneous Mesa GL utilities
ii  mesa-va-drivers:amd64                      19.2.8-0ubuntu0~18.04.3          
                amd64        Mesa VA-API video acceleration drivers
ii  mesa-vdpau-drivers:amd64                   19.2.8-0ubuntu0~18.04.3          
                amd64        Mesa VDPAU video acceleration drivers
ii  xserver-xorg-video-ati-hwe-18.04           1:19.0.1-1ubuntu1~18.04.1        
                amd64        X.Org X server -- AMD/ATI display driver wrapper
ii  xserver-xorg-video-intel-hwe-18.04         
2:2.99.917+git20171229-1ubuntu1~18.04.1          amd64        X.Org X server -- 
Intel i8xx, i9xx display driver
ii  xserver-xorg-video-nouveau-hwe-18.04       1:1.0.16-1~18.04.1               
                amd64        X.Org X server -- Nouveau display driver
ii  xserver-xorg-video-radeon-hwe-18.04        1:19.0.1-1ubuntu1~18.04.1        
                amd64        X.Org X server -- AMD/ATI Radeon display driver
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.4 LTS"
[    0.000000]   Intel GenuineIntel
[    0.016118] ACPI: SSDT 0x00000000CBFE62A8 000228 (v01 INTEL  sensrhub 
00000000 INTL 20120711)
[    0.016120] ACPI: SSDT 0x00000000CBFE64D0 000160 (v01 Intel  zpodd    
00001000 INTL 20120711)
[    0.016133] ACPI: ASF! 0x00000000CBFE7AE8 0000A5 (v32 INTEL   HCG     
00000001 TFSM 000F4240)
[    0.142586] smpboot: CPU0: Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz 
(family: 0x6, model: 0x3c, stepping: 0x3)
[    0.142670] Performance Events: PEBS fmt2+, Haswell events, 16-deep LBR, 
full-width counters, Intel PMU driver.
[    0.148180] MDS CPU bug present and SMT on, data leak possible. See 
https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more 
details.
[    0.175690] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[    0.186408] PCI: Using host bridge windows from ACPI; if necessary, use 
"pci=nocrs" and report a bug
[    0.203818] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM 
Segments MSI HPX-Type3]
[    0.226700] pci 0000:01:00.0: vgaarb: setting as boot VGA device
[    0.226700] pci 0000:01:00.0: vgaarb: VGA device added: 
decodes=io+mem,owns=io+mem,locks=none
[    0.226700] pci 0000:01:00.0: vgaarb: bridge control possible
[    0.226700] vgaarb: loaded
[    0.781114] vesafb: mode is 1920x1080x32, linelength=7680, pages=0
[    0.781114] vesafb: scrolling: redraw
[    0.781115] vesafb: Truecolor: size=0:8:8:8, shift=0:16:8:0
[    0.781128] vesafb: framebuffer at 0xe0000000, mapped to 0x00000000d0a90292, 
using 8128k, total 8128k
[    0.781164] fb0: VESA VGA frame buffer device
[    0.781174] intel_idle: MWAIT substates: 0x42120
[    0.781175] intel_idle: v0.4.1 model 0x3C
[    0.781453] intel_idle: lapic_timer_reliable_states 0xffffffff
[    0.789945] ehci-pci 0000:00:1a.0: debug port 2
[    0.807321] ehci-pci 0000:00:1d.0: debug port 2
[    0.835050] intel_pstate: Intel P-state driver initializing
[    0.840539] Segment Routing with IPv6
[    0.841280] RAS: Correctable Errors collector initialized.
[    1.079912] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
[    1.079913] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    1.225537] e1000e 0000:00:19.0 eth0: Intel(R) PRO/1000 Network Connection
[    7.001128] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro
[    7.602710] Intel(R) Wireless WiFi driver for Linux
[    7.602711] Copyright(c) 2003- 2015 Intel Corporation
[    7.607234] iwlwifi 0000:03:00.0: Direct firmware load for 
iwlwifi-6000-6.ucode failed with error -2
[    7.616353] iwlwifi 0000:03:00.0: Direct firmware load for 
iwlwifi-6000-5.ucode failed with error -2
[    7.725278] snd_hda_intel 0000:01:00.1: Handle vga_switcheroo audio client
[    7.725280] snd_hda_intel 0000:01:00.1: Force to non-snoop mode
[    7.728357] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
[    7.728359] iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS enabled
[    7.728361] iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Ultimate-N 
6300 AGN, REV=0x74
[    7.771026] [drm] radeon kernel modesetting enabled.
[    7.771093] radeon 0000:01:00.0: remove_conflicting_pci_framebuffers: bar 0: 
0xe0000000 -> 0xefffffff
[    7.771095] radeon 0000:01:00.0: remove_conflicting_pci_framebuffers: bar 2: 
0xf7e00000 -> 0xf7e3ffff
[    7.771098] fb0: switching to radeondrmfb from VESA VGA
[    7.771239] radeon 0000:01:00.0: vgaarb: deactivate vga console
[    7.771572] radeon 0000:01:00.0: No more image in the PCI ROM
[    7.771754] radeon 0000:01:00.0: VRAM: 2048M 0x0000000000000000 - 
0x000000007FFFFFFF (2048M used)
[    7.771755] radeon 0000:01:00.0: GTT: 2048M 0x0000000080000000 - 
0x00000000FFFFFFFF
[    7.771994] [drm] radeon: 2048M of VRAM memory ready
[    7.771994] [drm] radeon: 2048M of GTT memory ready.
[    7.844084] input: HDA Intel PCH Front Mic as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input16
[    7.844154] input: HDA Intel PCH Dock Mic as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input17
[    7.844222] input: HDA Intel PCH Dock Line Out as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input18
[    7.844292] input: HDA Intel PCH Front Headphone as 
/devices/pci0000:00/0000:00:1b.0/sound/card0/input19
[    7.863840] [drm] radeon: dpm initialized
[    7.886886] [drm] GART: num cpu pages 524288, num gpu pages 524288
[    7.908411] radeon 0000:01:00.0: WB enabled
[    7.908414] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 
0x0000000080000c00 and cpu addr 0x000000007495c465
[    7.908415] radeon 0000:01:00.0: fence driver on ring 1 use gpu addr 
0x0000000080000c04 and cpu addr 0x00000000af0f7ca0
[    7.908416] radeon 0000:01:00.0: fence driver on ring 2 use gpu addr 
0x0000000080000c08 and cpu addr 0x000000005a3ceeec
[    7.908417] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 
0x0000000080000c0c and cpu addr 0x000000003237f019
[    7.908418] radeon 0000:01:00.0: fence driver on ring 4 use gpu addr 
0x0000000080000c10 and cpu addr 0x000000005d3235dd
[    7.908616] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 
0x0000000000075a18 and cpu addr 0x00000000f2d0a543
[    7.928671] radeon 0000:01:00.0: fence driver on ring 6 use gpu addr 
0x0000000080000c18 and cpu addr 0x00000000ac4f011d
[    7.928673] radeon 0000:01:00.0: fence driver on ring 7 use gpu addr 
0x0000000080000c1c and cpu addr 0x000000003c3cd788
[    7.928680] radeon 0000:01:00.0: radeon: MSI limited to 32-bit
[    7.928726] radeon 0000:01:00.0: radeon: using MSI.
[    7.928756] [drm] radeon: irq initialized.
[    8.942187] intel_rapl_common: Found RAPL domain package
[    8.942189] intel_rapl_common: Found RAPL domain core
[    8.942190] intel_rapl_common: Found RAPL domain dram
[    8.942193] intel_rapl_common: RAPL package-0 domain package locked by BIOS
[    8.942196] intel_rapl_common: RAPL package-0 domain dram locked by BIOS
[   11.018672] [drm] radeon atom DIG backlight initialized
[   11.018676] [drm] Radeon Display Connectors
[   11.018692] [drm]   VGA-1
[   12.460477] fbcon: radeondrmfb (fb0) is primary device
[   13.094100] radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device
[   13.107793] [drm] Initialized radeon 2.50.0 20080528 for 0000:01:00.0 on 
minor 0
[   13.239783] [drm] amdgpu kernel modesetting enabled.
[   16.957478] vboxdrv: module verification failed: signature and/or required 
key missing - tainting kernel
[   21.938657] radeon_dp_aux_transfer_native: 494 callbacks suppressed
[ 1098.004680] radeon_dp_aux_transfer_native: 368 callbacks suppressed
[ 1823.513941] radeon_dp_aux_transfer_native: 116 callbacks suppressed
model           : 60
model name      : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
model           : 60
model name      : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
model           : 60
model name      : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
model           : 60
model name      : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
model           : 60
model name      : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
model           : 60
model name      : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
model           : 60
model name      : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
model           : 60
model name      : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz
cat: /var/log/Xorg.0.log: No such file or directory
        Release Date: 12/22/2016
                Serial services are supported (int 14h)
        Manufacturer: Dell Inc.
        Product Name: Precision M4800
        Serial Number: H5WPJ12
        Manufacturer: Dell Inc.
        Product Name: 0T3YTY
        Serial Number: /H5WPJ12/CN1296349G00C7/
        Manufacturer: Dell Inc.
        Serial Number: H5WPJ12
        Manufacturer: Intel
        Serial Number: Not Specified
        Port Type: Serial Port 16550A Compatible
        Manufacturer: Samsung
        Serial Number: F1CDB794
        Manufacturer: [Empty]
        Serial Number: [Empty]
        Manufacturer: Samsung
        Serial Number: 84CEB794
        Manufacturer: [Empty]
        Serial Number: [Empty]
        Manufacturer: SMP
        Manufacture Date: 05/23/2018
        Serial Number: 0142
cat: /etc/X11/xorg.conf: No such file or directory
OpenGL vendor string:   X.Org
OpenGL renderer string: AMD VERDE (DRM 2.50.0, 5.3.0-51-generic, LLVM 9.0.0)
OpenGL version string:  4.5 (Compatibility Profile) Mesa 19.2.8

Not software rendered:    yes
Not blacklisted:          yes
GLX fbconfig:             yes
GLX texture from pixmap:  yes
GL npot or rect textures: yes
GL vertex program:        yes
GL fragment program:      yes
GL vertex buffer object:  yes
GL framebuffer object:    yes
GL version is 1.4+:       yes

Unity 3D supported:       yes
Support status summary of 'solomon':

You have 1979 packages (82.5%) supported until April 2023 (Canonical - 5y)
You have 174 packages (7.3%) supported until April 2021 (Community - 3y)
You have 3 packages (0.1%) supported until April 2021 (Canonical - 3y)

You have 0 packages (0.0%) that can not/no-longer be downloaded
You have 242 packages (10.1%) that are unsupported

Your Hardware Enablement Stack (HWE) is supported until April 2023.

Run with --show-unsupported, --show-supported or --show-all to see more details
Module                  Size  Used by
pci_stub               16384  1
vboxpci                24576  0
vboxnetadp             28672  0
vboxnetflt             28672  0
vboxdrv               471040  3 vboxpci,vboxnetadp,vboxnetflt
ccm                    20480  6
amdgpu               4112384  0
amd_iommu_v2           20480  1 amdgpu
gpu_sched              32768  1 amdgpu
intel_rapl_msr         20480  0
intel_rapl_common      24576  1 intel_rapl_msr
x86_pkg_temp_thermal    20480  0
intel_powerclamp       20480  0
coretemp               20480  0
kvm_intel             245760  0
kvm                   655360  1 kvm_intel
irqbypass              16384  1 kvm
mei_hdcp               24576  0
crct10dif_pclmul       16384  1
crc32_pclmul           16384  0
dell_laptop            20480  0
ghash_clmulni_intel    16384  0
uvcvideo               94208  0
dell_smm_hwmon         20480  0
snd_soc_rt5640        143360  0
snd_hda_codec_realtek   118784  1
v4l2_common            16384  1 uvcvideo
snd_hda_codec_generic    81920  1 snd_hda_codec_realtek
videobuf2_vmalloc      20480  1 uvcvideo
ledtrig_audio          16384  3 
snd_hda_codec_generic,snd_hda_codec_realtek,dell_laptop
snd_soc_rl6231         20480  1 snd_soc_rt5640
videobuf2_memops       20480  1 videobuf2_vmalloc
snd_hda_codec_hdmi     57344  1
aesni_intel           372736  4
radeon               1454080  32
iwldvm                233472  0
snd_hda_intel          53248  8
videobuf2_v4l2         24576  1 uvcvideo
aes_x86_64             20480  1 aesni_intel
snd_intel_nhlt         20480  1 snd_hda_intel
videobuf2_common       49152  2 videobuf2_v4l2,uvcvideo
snd_soc_core          237568  1 snd_soc_rt5640
crypto_simd            16384  1 aesni_intel
mac80211              847872  1 iwldvm
snd_hda_codec         131072  4 
snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
videodev              208896  4 
v4l2_common,videobuf2_v4l2,uvcvideo,videobuf2_common
snd_compress           24576  1 snd_soc_core
cryptd                 24576  2 crypto_simd,ghash_clmulni_intel
ac97_bus               16384  1 snd_soc_core
mc                     53248  4 
videodev,videobuf2_v4l2,uvcvideo,videobuf2_common
glue_helper            16384  1 aesni_intel
snd_hda_core           90112  5 
snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
ttm                   102400  2 amdgpu,radeon
libarc4                16384  1 mac80211
snd_pcm_dmaengine      16384  1 snd_soc_core
snd_hwdep              20480  1 snd_hda_codec
drm_kms_helper        180224  2 amdgpu,radeon
intel_cstate           20480  0
snd_pcm               102400  7 
snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_soc_rt5640,snd_soc_core,snd_hda_core,snd_pcm_dmaengine
drm                   491520  21 gpu_sched,drm_kms_helper,amdgpu,radeon,ttm
dell_wmi               20480  0
intel_rapl_perf        20480  0
snd_seq_midi           20480  0
dell_smbios            28672  2 dell_wmi,dell_laptop
i2c_algo_bit           16384  2 amdgpu,radeon
snd_seq_midi_event     16384  1 snd_seq_midi
input_leds             16384  0
joydev                 28672  0
dcdbas                 20480  1 dell_smbios
fb_sys_fops            16384  1 drm_kms_helper
snd_rawmidi            36864  1 snd_seq_midi
serio_raw              20480  0
syscopyarea            16384  1 drm_kms_helper
sparse_keymap          16384  1 dell_wmi
iwlwifi               348160  1 iwldvm
snd_seq                69632  2 snd_seq_midi,snd_seq_midi_event
sysfillrect            16384  1 drm_kms_helper
wmi_bmof               16384  0
dell_wmi_descriptor    20480  2 dell_wmi,dell_smbios
sysimgblt              16384  1 drm_kms_helper
snd_seq_device         16384  3 snd_seq,snd_seq_midi,snd_rawmidi
snd_timer              36864  2 snd_seq,snd_pcm
snd                    86016  29 
snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
cfg80211              704512  3 iwldvm,iwlwifi,mac80211
mei_me                 40960  1
soundcore              16384  1 snd
mei                   102400  3 mei_hdcp,mei_me
lpc_ich                24576  0
ie31200_edac           16384  0
dell_rbtn              20480  1
dell_smo8800           20480  0
mac_hid                16384  0
sch_fq_codel           20480  6
cuse                   16384  3
parport_pc             40960  0
ppdev                  24576  0
lp                     20480  0
parport                53248  3 parport_pc,lp,ppdev
ip_tables              32768  0
x_tables               40960  1 ip_tables
autofs4                45056  2
sdhci_pci              45056  0
ahci                   40960  1
psmouse               151552  0
cqhci                  28672  1 sdhci_pci
e1000e                253952  0
sdhci                  57344  1 sdhci_pci
libahci                32768  1 ahci
wmi                    32768  4 
dell_wmi,wmi_bmof,dell_smbios,dell_wmi_descriptor
video                  49152  2 dell_wmi,dell_laptop
solomon@solomon:~$ ^C
solomon@solomon:~$ ^C
solomon@solomon:~$

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
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https://bugs.launchpad.net/bugs/1879068

Title:
  Ubuntu 18 hangs and seeing a report like Radeon ring 4 stalled for
  100000+ seconds

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