Okay, this bug has absolutely nothing to do with grub or netplan.
Changing the renderer couldn't possibly affect the behavior of X, and
the grub configuration looks, at a glace, to be run-of-the mill; pretty
much default if you disregard that there is any number of different
installs on the system.
For instance the kernel command-line:
BOOT_IMAGE=/boot/vmlinuz-5.0.0-7-generic root=UUID=1d61086d-
275b-4537-bed5-f2d3080670eb ro quiet splash
(from various attached output of dmesg)
This command-line is pretty much default. The use of kernels 5.0.0-7 or 5.0.0-8
are what I'd expect on disco images; and there are no special kernel parameters
being passed. I don't know what partition root= points to; but this is the only
possible thing I could see. Grub really doesn't care what you want to start, it
will just run the kernel and initrd you tell it to. Unless this is a quite
unforeseen and unlikely bad interaction between kernel drivers and the limited
gfxmode changes we do in grub... but we'd see this on more than just this
system.
Could you please attach a video or pictures of what you're seeing on the
screen, along with clear details of *any* modifications you do to boot
something, how you set up your tests, so that we could potentially
reproduce this or see what is happening?
I'm cleaning up the title here for clarity; but this seems like either a
kernel bug, some missing modules for your particular setup, or bad
interactions because of the very complicated multi-boot scenario you're
presenting.
** Summary changed:
- lightdm login screen briefly appears and then blanks out on Intel(R)
Core(TM)2 Duo CPU T5870 (crash in xorg before using "foreign grub") netplan
mis-configuration maybe underlying cause.
+ lightdm login screen briefly appears and then blanks out on Intel(R)
Core(TM)2 Duo CPU T5870
** Changed in: lightdm (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1821609
Title:
lightdm login screen briefly appears and then blanks out on Intel(R)
Core(TM)2 Duo CPU T5870
Status in lightdm package in Ubuntu:
Incomplete
Status in linux package in Ubuntu:
Incomplete
Status in xorg-server package in Ubuntu:
Invalid
Bug description:
Okay the has happened recently at least since march 18, 2019 iso and
march 22, 2019 iso are both effected very similar to one of my
previously reported bugs .. which was related to xorg not being
installed ..
back ground .. PC is lenovo sl 500 with evo860 SSD drive
3 partions contain installs of disco sda1 -- main working system -- I
usually install grub from here as master ..
sda6 and sda7 are test installs of disco daily iso's 03-18-2019,
03-22-2019 repectively
on the test installs as long as the iso is using the grub boot loader
installed from that install the system will boot normally .. the display manger
tends to flicker on and off but does final start and login can proceed.
but if another install re-installs grub as master the display manager
fails to stay active or even come-up for sda6 or sda7 only if their
own grubs are reinstalled will they work normally
sda1 display manager/xorg login works always no matter which "grub-
source" is in control.
if I use rescue boot from any grub as master I can get the displays to work
by running dpkg fix which does nothing .. and then resuming the boot .. then
things work normally..
if the "non-rescue" boots are used the screen/computer locks and only a power
down and reboot gives access. (sometime requiring radical depowering ..
unpluging and removing battery)
now the is a message that appears that RCs??? level is missing.
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: xorg 1:7.7+19ubuntu11
ProcVersionSignature: Ubuntu 5.0.0-7.8-generic 5.0.0
Uname: Linux 5.0.0-7-generic x86_64
ApportVersion: 2.20.10-0ubuntu23
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: XFCE
Date: Mon Mar 25 11:25:58 2019
DistUpgraded: Fresh install
DistroCodename: disco
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GpuHangFrequency: Several times a day
GpuHangReproducibility: Yes, I can easily reproduce it
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller
[8086:2a42] (rev 07) (prog-if 00 [VGA controller])
Subsystem: Lenovo Mobile 4 Series Chipset Integrated Graphics Controller
[17aa:20e4]
Subsystem: Lenovo Mobile 4 Series Chipset Integrated Graphics Controller
[17aa:20e4]
InstallationDate: Installed on 2019-03-23 (1 days ago)
InstallationMedia: Xubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190322)
MachineType: LENOVO 2746CTO
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-7-generic
root=UUID=1d61086d-275b-4537-bed5-f2d3080670eb ro recovery nomodeset
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6AET64WW
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: 2746CTO
dmi.board.vendor: LENOVO
dmi.board.version: LENOVO 6AET64WW
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: LENOVO 6AET64WW
dmi.modalias:
dmi:bvnLENOVO:bvr6AET64WW:bd12/01/2010:svnLENOVO:pn2746CTO:pvrThinkPadSL500:rvnLENOVO:rn2746CTO:rvrLENOVO6AET64WW:cvnLENOVO:ct10:cvrLENOVO6AET64WW:
dmi.product.name: 2746CTO
dmi.product.version: ThinkPad SL500
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.97-1
version.libgl1-mesa-dri: libgl1-mesa-dri 19.0.0-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.4-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.0.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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