Hi Daniel,

On Mon, Mar 5, 2018 at 9:56 PM, Daniel van Vugt
<daniel.van.v...@canonical.com> wrote:
> Nish,
>
> To figure the problem out you will need to be logged in already while
> it's happening(!), so..

Yeah, tricky when the machine physically seems to be hung (no
touchpad, no responsiveness to keyboard)

> 1. Log into a VT (Ctrl+Alt+F4) or install openssh-server and log in from a 
> separate machine.
> 2. Run 'top' to find the ID of the spinning process.
> 3. Run:
>    kill -ABRT <PID-of-spinning-process>
> 4. Wait a while for crash files to be written.
> 5. Look in /var/crash for crash files and run:
>    ubuntu-bug /var/crash/YOURFILE.crash
> 6. Add a comment here telling us the ID of the new bug.

Thanks for the info!

I just was wondering, as the responsiveness of the desktop feels very
different, and it does seem like I'm now on an Xwayland session, even
though I didn't change anything. I wonder if it's Wayland that's
actually crashing?

gdm       2795  0.0  0.0 190684  5496 tty1     Ssl+ Mar05   0:00
/usr/lib/gdm3/gdm-wayland-session gnome-session --autostart
/usr/share/gdm/greeter/autostart
gdm       2878  0.0  0.3 563888 55076 tty1     Sl+  Mar05   0:00
/usr/bin/Xwayland :1024 -rootless -terminate -accessx -core -listen 4
-listen 5 -displayfd 6
nacc      3428  0.0  0.0 190684  5408 tty2     Ssl+ Mar05   0:00
/usr/lib/gdm3/gdm-wayland-session gnome-session --session=gnome
nacc      3502  0.0  0.3 565704 56056 tty2     Sl+  Mar05   0:02
/usr/bin/Xwayland :0 -rootless -terminate -accessx -core -listen 4
-listen 5 -displayfd 6

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1753576

Title:
  GDM freeze

Status in gdm3 package in Ubuntu:
  Incomplete
Status in gnome-shell package in Ubuntu:
  Incomplete
Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  Here is what I know so far:

  After rebooting this morning on Bionic (after receiving the gnome
  theme updates, I think), upon reboot the CPU pegs and the greeter is
  never displayed (there is a graphics system running, but I'm not sure
  what it's doing). My num lock / caps lock keys work, but the touchpad
  on the laptop does nothing to the mouse.

  If I boot with nomodeset, greeter does not freeze.

  Finally, in either case, I am now unable to use my external monitor,
  which worked fine before (connected over a USB-C to HDMI dongle).

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: xorg 1:7.7+19ubuntu5
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic x86_64
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: GNOME
  Date: Mon Mar  5 11:47:53 2018
  DistUpgraded: Fresh install
  DistroCodename: bionic
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes, including running git bisection searches
  GpuHangFrequency: This is the first time
  GraphicsCard:
   Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA 
controller])
     Subsystem: Lenovo Skylake GT2 [HD Graphics 520] [17aa:3800]
  InstallationDate: Installed on 2015-12-17 (809 days ago)
  InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 
(20151021)
  MachineType: LENOVO 80MK
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-10-generic 
root=UUID=c0742e7a-578f-4be5-bd9e-05b9e92f5b00 ro noprompt persistent quiet 
splash nomodeset
  SourcePackage: xorg
  Symptom: display
  Title: Xorg freeze
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/29/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: C6CN34WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: VIUU4
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0K45914 WIN
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo YOGA 900-13ISK
  dmi.modalias: 
dmi:bvnLENOVO:bvrC6CN34WW:bd10/29/2015:svnLENOVO:pn80MK:pvrLenovoYOGA900-13ISK:rvnLENOVO:rnVIUU4:rvrSDK0K45914WIN:cvnLENOVO:ct10:cvrLenovoYOGA900-13ISK:
  dmi.product.family: IDEAPAD
  dmi.product.name: 80MK
  dmi.product.version: Lenovo YOGA 900-13ISK
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
  version.libdrm2: libdrm2 2.4.90-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc4-1ubuntu3
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc4-1ubuntu3
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.10.0-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
  xserver.bootTime: Mon Mar  5 11:17:58 2018
  xserver.configfile: default
  xserver.errors:
   open /dev/dri/card0: No such file or directory
   open /dev/dri/card0: No such file or directory
   Screen 0 deleted because of no matching config section.
   AIGLX: reverting to software rendering
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.19.6-1ubuntu2

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