** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1802578

Title:
  [drm:intel_display_resume [i915]] *ERROR* Restoring old state failed
  with -22

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  This error appears in my journal quite often after resuming laptop
  from suspend and when un-docking the machine in the meantime.

  When docked, I usually only enable two external displays. Un-docked I
  only have the built-in display on the laptop. This was working
  flawlessly in 18.04 but is extremely buggy now after having upgraded
  to 18.10 for some reason.

  When this happens, my screen(s) remain pitch black. Switching to TTYs
  and back does not help. CTRL+ALT+F1 gives me the GDM login, but when
  entering password it seems it switches to TTY2 (or whatever is at
  CTRL+ALT+F2), and the screen(s) remain black.

  Logging in in a TTY and trying to "DISPLAY=:0.0 gnome-shell --replace"
  does not help.

  <super>+P does not work (is this shortcut combination removed?).

  At last when I ran "xrandr --auto" the session I had crashed and I had
  to re-login, but at least this time I got my desktop.

  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: linux-image-4.18.0-10-generic 4.18.0-10.11
  ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
  Uname: Linux 4.18.0-10-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  alexander  23057 F.... pulseaudio
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Nov  9 20:34:53 2018
  HibernationDevice: RESUME=/swapfile
  InstallationDate: Installed on 2018-05-02 (190 days ago)
  InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  MachineType: LENOVO 20HN0013MX
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-10-generic 
root=/dev/mapper/ubuntu--vg-root ro quiet splash net.ifnames=0 vt.handoff=1
  RelatedPackageVersions:
   linux-restricted-modules-4.18.0-10-generic N/A
   linux-backports-modules-4.18.0-10-generic  N/A
   linux-firmware                             1.175
  SourcePackage: linux
  UpgradeStatus: Upgraded to cosmic on 2018-11-01 (7 days ago)
  dmi.bios.date: 09/14/2018
  dmi.bios.vendor: LENOVO
  dmi.bios.version: R0IET55W (1.33 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20HN0013MX
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrR0IET55W(1.33):bd09/14/2018:svnLENOVO:pn20HN0013MX:pvrThinkPadX270:rvnLENOVO:rn20HN0013MX:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.family: ThinkPad X270
  dmi.product.name: 20HN0013MX
  dmi.product.sku: LENOVO_MT_20HN_BU_Think_FM_ThinkPad X270
  dmi.product.version: ThinkPad X270
  dmi.sys.vendor: LENOVO

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