When the machine is booted, open a terminal and run "dmesg" to see on what the kernel was stuck so long. In my case, it was the intel-lpss PCI device initialization, and I fixed it by disabling the Intel IOMMU. If you get similar results, this issue might be a duplicate of mine which I reported here:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1973167 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1973234 Title: Slow Boot, No SOUND, No Ethernet Status in linux package in Ubuntu: Confirmed Bug description: I would like to report the latest kernel update: 4.15.0.177.166 to my Linux Mint 19.1 systems displayed the following problems: 1. After Update - Boot process is VERY SLOW. 2. After Update - Once desktop comes up, mouse and keyboard are disabled for approx. 2 minutes. 3. All sound is totally disabled (gone) on the system and the device under Sound reports as "Dummy Output". 4. On another system with a USB-C to RJ45 Ethernet external connection dongle - the device was disabled, but could be re-detected, by removing and re-plugging into the USB-C port. This is not previously how it has operated. After having these issues on multiple machines, I restored the system(s) to the previous kernel 4.15.0-176-generic with Timeshift without issue, correcting all issues listed above. I believe this is a major issue(s) for the kernel and it's users and it needs to be addressed A.S.A.P. System Particulars: System: Host: mic-Aspire-E5-576G Kernel: 4.15.0-176-generic x86_64 bits: 64 compiler: gcc v: 7.5.0 Desktop: Cinnamon 4.0.10 wm: muffin 4.0.7 dm: LightDM 1.26.0 Distro: Linux Mint 19.1 Tessa base: Ubuntu 18.04 bionic Machine: Type: Laptop System: Acer product: Aspire E5-576G v: V1.47 serial: <filter> Mobo: KBL model: Ironman_SK v: V1.47 serial: <filter> UEFI: Insyde v: 1.47 date: 09/06/2018 Battery: ID-1: BAT1 charge: 34.3 Wh condition: 34.3/62.2 Wh (55%) volts: 12.7/11.1 model: PANASONIC AS16B5J type: Li-ion serial: <filter> status: Full Device-1: hidpp_battery_0 model: Logitech Wireless Touch Keyboard K400 serial: <filter> charge: 100% rechargeable: yes status: Discharging CPU: Topology: Quad Core model: Intel Core i5-8250U bits: 64 type: MT MCP arch: Kaby Lake rev: A L2 cache: 6144 KiB flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 28800 Speed: 700 MHz min/max: 400/3400 MHz Core speeds (MHz): 1: 700 2: 700 3: 700 4: 709 5: 706 6: 700 7: 720 8: 700 Graphics: Device-1: Intel UHD Graphics 620 vendor: Acer Incorporated ALI driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:5917 Device-2: NVIDIA GP108M [GeForce MX150] vendor: Acer Incorporated ALI driver: N/A bus ID: 01:00.0 chip ID: 10de:1d10 Display: x11 server: X.Org 1.19.6 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz OpenGL: renderer: Mesa DRI Intel UHD Graphics 620 (KBL GT2) v: 4.6 Mesa 20.0.8 compat-v: 3.0 direct render: Yes Audio: Device-1: Intel Sunrise Point-LP HD Audio vendor: Acer Incorporated ALI driver: snd_hda_intel v: kernel bus ID: 00:1f.3 chip ID: 8086:9d71 Sound Server: ALSA v: k4.15.0-176-generic Network: Device-1: Intel Dual Band Wireless-AC 3168NGW [Stone Peak] driver: iwlwifi v: kernel port: 4000 bus ID: 03:00.0 chip ID: 8086:24fb IF: wlp3s0 state: down mac: <filter> Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Acer Incorporated ALI driver: r8169 v: 2.3LK-NAPI port: 3000 bus ID: 04:00.1 chip ID: 10ec:8168 IF: enp4s0f1 state: up speed: 1000 Mbps duplex: full mac: <filter> Drives: Local Storage: total: 912.89 GiB used: 172.01 GiB (18.8%) ID-1: /dev/sda vendor: SanDisk model: Ultra II 480GB size: 447.13 GiB speed: 6.0 Gb/s serial: <filter> rev: 20RL scheme: GPT ID-2: /dev/sdb vendor: Crucial model: CT500MX500SSD4 size: 465.76 GiB speed: 6.0 Gb/s serial: <filter> rev: 023 scheme: MBR Partition: ID-1: / size: 438.62 GiB used: 113.17 GiB (25.8%) fs: ext4 dev: /dev/sda2 Sensors: System Temperatures: cpu: 46.5 C mobo: N/A Fan Speeds (RPM): N/A Repos: No active apt repos in: /etc/apt/sources.list Active apt repos in: /etc/apt/sources.list.d/alex-p-aegisub-bionic.list 1: deb http://ppa.launchpad.net/alex-p/aegisub/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/alex-p/aegisub/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/audio-recorder-ppa-bionic.list 1: deb http://ppa.launchpad.net/audio-recorder/ppa/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/audio-recorder/ppa/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/clipgrab-team-ppa-bionic.list 1: deb http://ppa.launchpad.net/clipgrab-team/ppa/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/clipgrab-team/ppa/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/gezakovacs-ppa-bionic.list 1: deb http://ppa.launchpad.net/gezakovacs/ppa/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/gezakovacs/ppa/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/google-earth-pro.list 1: deb [arch=amd64] http://dl.google.com/linux/earth/deb/ stable main Active apt repos in: /etc/apt/sources.list.d/jeffreyratcliffe-ppa-bionic.list 1: deb http://ppa.launchpad.net/jeffreyratcliffe/ppa/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/jeffreyratcliffe/ppa/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/maarten-baert-simplescreenrecorder-bionic.list 1: deb http://ppa.launchpad.net/maarten-baert/simplescreenrecorder/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/maarten-baert/simplescreenrecorder/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/malteworld-ppa-bionic.list 1: deb http://ppa.launchpad.net/malteworld/ppa/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/malteworld/ppa/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/nilarimogard-webupd8-bionic.list 1: deb http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/nilarimogard/webupd8/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/noobslab-apps-bionic.list 1: deb http://ppa.launchpad.net/noobslab/apps/ubuntu bionic main 2: deb-src http://ppa.launchpad.net/noobslab/apps/ubuntu bionic main Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 1: deb http://packages.linuxmint.com tessa main upstream import backport 2: deb http://archive.ubuntu.com/ubuntu bionic main restricted universe multiverse 3: deb http://archive.ubuntu.com/ubuntu bionic-updates main restricted universe multiverse 4: deb http://archive.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse 5: deb http://security.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse 6: deb http://archive.canonical.com/ubuntu/ bionic partner Info: Processes: 244 Uptime: 4h 06m Memory: 15.54 GiB used: 1.57 GiB (10.1%) Init: systemd v: 237 runlevel: 5 Compilers: gcc: 7.5.0 alt: 7 Shell: bash v: 4.4.20 running in: gnome-terminal inxi: 3.0.27 mic@mic-Aspire-E5-576G:~$ Additional: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1973234/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
