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[qji <qji@xxxxxxx>]

Public bug reported:

I use suspend/resume very often, and usually after many suspend without
reboot at the resume the screen remains black only the mouse cursor is
visible. The mouse cursor works fine, and actually I can unlock the
screen blind, but I don't see anything, only the mouse cursor. Then I
switch to one of the virtual terminals (CTRL-Alt-F1) and back (Alt-F7)
and it helps. but sometimes nothing helps, virtual consols work fine,
but I can't reach my X anymore. Then I see in the syslog the follow:

Jul 15 19:37:42 hostname kernel: [108899.493343] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
Jul 15 19:37:55 hostname kernel: [108911.890076] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
Jul 15 19:39:52 hostname kernel: [109028.505586] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
Jul 15 19:40:14 hostname kernel: [109050.756430] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
Jul 15 19:42:16 hostname kernel: [109172.705844] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
Jul 15 19:42:38 hostname kernel: [109193.930381] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck

I use Ubuntu 12.04 (precise), amd64

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


** Tags: drm intel precise suspend xorg

** Description changed:

- I use suspend/resume very often , and usually after many suspend without
+ I use suspend/resume very often, and usually after many suspend without
  reboot at the resume the screen remains black only the mouse cursor is
  visible. The mouse cursor works fine, and actually I can unlock the
- screen blind, but I don't see anything, only the mouse cursor. Usually
- then I switch to one of the virtual terminals (CTRL-Alt-F1) and back
- (CTRL-Alt-F7) and it helps. but sometimes nothing helps, virtual consols
- work fine, but I can't reach my X anymore. Then I see in the syslog the
- follow:
+ screen blind, but I don't see anything, only the mouse cursor. Then I
+ switch to one of the virtual terminals (CTRL-Alt-F1) and back (Alt-F7)
+ and it helps. but sometimes nothing helps, virtual consols work fine,
+ but I can't reach my X anymore. Then I see in the syslog the follow:
  
  Jul 15 19:37:42 hostname kernel: [108899.493343] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:37:55 hostname kernel: [108911.890076] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:39:52 hostname kernel: [109028.505586] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:40:14 hostname kernel: [109050.756430] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:42:16 hostname kernel: [109172.705844] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:42:38 hostname kernel: [109193.930381] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  
  I use Ubuntu 12.04 (precise), amd64

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https://bugs.launchpad.net/bugs/1201878

Title:
  intel video suspend/resume failed, black screen with mouse cursor

Status in “linux” package in Ubuntu:
  New

Bug description:
  I use suspend/resume very often, and usually after many suspend
  without reboot at the resume the screen remains black only the mouse
  cursor is visible. The mouse cursor works fine, and actually I can
  unlock the screen blind, but I don't see anything, only the mouse
  cursor. Then I switch to one of the virtual terminals (CTRL-Alt-F1)
  and back (Alt-F7) and it helps. but sometimes nothing helps, virtual
  consols work fine, but I can't reach my X anymore. Then I see in the
  syslog the follow:

  Jul 15 19:37:42 hostname kernel: [108899.493343] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:37:55 hostname kernel: [108911.890076] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:39:52 hostname kernel: [109028.505586] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:40:14 hostname kernel: [109050.756430] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:42:16 hostname kernel: [109172.705844] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck
  Jul 15 19:42:38 hostname kernel: [109193.930381] [drm:intel_cpt_verify_modeset] *ERROR* mode set failed: pipe 1 stuck

  I use Ubuntu 12.04 (precise), amd64

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