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[l0b0 <victor.engmark@xxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-intel

Hardware: HP Compaq dc79000 Convertible Minitower
<https://h10057.www1.hp.com/ecomcat/hpcatalog/specs/provisioner/05/KP719AV.htm>,
Eizo FlexScan L557 (connected with D-SUB, aka VGA), HP LP2475w
(connected with DP).

Software: Ubuntu 9.10, Intel i915 driver

Symptoms: The HP screen turns off, the keyboard becomes unresponsive
(None of Ctrl-Alt-F1, Ctrl-Alt-Del and Caps Lock work), but the Ubuntu
background can still be seen on the Eizo screen and the mouse pointer
can be moved there.

Symptoms (safe mode boot):
Many instances of "[drm:intel_dp_aux_ch] *ERROR* dp_aux_ch not done status 0x007500c8" followed by eight instances of "BUG: soft lockup - CPU#1 stuck for 61s! [i915/1:376]". Then nothing.

How to reproduce: Leave the PC on for long enough.

Reproducible: Not systematically. Usually the problem occurs after
leaving the computer on for some time. After the problem occurs, it
usually occurs quickly after the next hard boot. It doesn't seem to
matter whether it's heavily used or not. I'm not running any 3D software
or games.

** Affects: xserver-xorg-video-intel (Ubuntu)
     Importance: Undecided
         Status: New

-- 
dp_aux_ch not done status 0x007500c8
https://bugs.launchpad.net/bugs/557128
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