Ubuntu
xserver-xorg-video-intel package

  1. Bug #538648
  2. Comment #85

Comment 85 for bug 538648

Revision history for this message
Jeffrey Knockel (jeff250) wrote : Re: [Intel GM45] Irregular sync flashes on 8086:2a42 (Needs i915.powersave quirk)

Robert, I have been using the latest maverick kernel for about 24 hours now:

$ uname -r
2.6.34-2-generic

I have an Inspiron 1545 and the Intel GM45:

$ lspci | grep -i graphics
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)

I was previously using the i915.powersave workaround. To test the newer kernel, I installed it, and disabled the i915.powersave workaround. To ensure that it was disabled, I rebooted into the lucid kernel again, and the flickering returned--about every few minutes, like before.

Now I've been booted into the latest maverick kernel for about 24 hours now without seeing any flickering. Given how frequently I saw the flickering before, I think that it is likely that the maverick kernel has resolved the issue. However, given the flickering's nondeterministic nature, I will continue using the maverick kernel and post back if the flickering returns.

Let me know if there is anything else I can do, short of using git-bisect, to help you track this down.