Kernel Bug Tracker – Bug 13165
2.6.30-rc3 : Regression: i915 , video
Last modified: 2009-06-04 12:00:14 UTC
Subject : 2.6.30-rc3 : Regression: i915 , video
Submitter : We La <firstname.lastname@example.org>
Date : 2009-04-23 19:19
References : http://marc.info/?l=linux-kernel&m=124051473119134&w=4
References : http://marc.info/?l=linux-kernel&m=124062673404329&w=4
Handled-By : Len Brown <email@example.com>
Patch : http://patchwork.kernel.org/patch/18420/
This entry is being used for tracking a regression from 2.6.29. Please don't
close it until the problem is fixed in the mainline.
Notify-Also : Soeren Sonnenburg <firstname.lastname@example.org>
On Sunday 26 April 2009, We La wrote:
> The patch didnt yet enter into the -git of the main kernel. Thus, the problem still is relevant.
The issue can be fixed by the patch in http://patchwork.kernel.org/patch/18420/. But a new issue will be triggered.
The issue can be fixed by the following patch:
*** Bug 13048 has been marked as a duplicate of this bug. ***
Handled-By : Len Brown <email@example.com>
Patch : http://marc.info/?l=linux-acpi&m=124058818318025&w=2
References : http://marc.info/?l=linux-kernel&m=124114670216455&w=4
Fixed by: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ecb4aed78dcf09e48c8c34c8c2fa7f5c69344be6
shipped in linux-2.6.30-rc6-git1
for me ACPI_VIDEO newer worked alright and caused hardware backlight control not to work properly. However, I was happy with DRM_I915, ACPI enabled and ACPI_VIDEO disabled in .30-rc7 (no build problems here(?)). So commit 31db5645bda24682dadbc97d5e8a7918ade2a298 broke my setup. I wonder whether ACPI_VIDEO is really needed by DRM_I915. Could it be made optional?
The proper solution to this may be fixing acpi-video to work here (Fujitsu-Siemens M9400 laptop with Intel GM965 gpu), but I've never had a use for it, so it's not relevant for me.