| Summary: | Display brightness automatically adjusts to maxmim | ||||||||||||
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| Product: | xorg | Reporter: | Orion Poplawski <orion> | ||||||||||
| Component: | Driver/intel | Assignee: | Jesse Barnes <jbarnes> | ||||||||||
| Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> | ||||||||||
| Severity: | normal | ||||||||||||
| Priority: | medium | CC: | colin, sergio, xhejtman | ||||||||||
| Version: | unspecified | ||||||||||||
| Hardware: | Other | ||||||||||||
| OS: | All | ||||||||||||
| Whiteboard: | |||||||||||||
| i915 platform: | i915 features: | ||||||||||||
| Bug Depends on: | |||||||||||||
| Bug Blocks: | 13493 | ||||||||||||
| Attachments: |
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Created attachment 12632 [details]
X log
Created attachment 12633 [details]
xorg.conf
There have been some related fixes in xf86-video-intel 2.2.0. Could you try it? 2.2.0 exhibits the same behavior. Created attachment 12950 [details]
latest backlight fixes
Does this patch work for you?
Adding Sergio to this bug as I think he was seeing similar issues. Created attachment 12954 [details]
backlight fixes
Save backlight state at suspend/leaveVT time
Don't set brightness to maximum if it was zero (a valid value).
Save the current state at startup.
seems to be working. Ok, fix pushed. Thanks a lot for your testing & suggestions. Um, worked fine until suspend/resume. Then self brightening came back. Hm, that may be a separate problem... are you using vbetool post in your resume path? Oh and does the brightness go back to maximum after a VT switch? If not, I think you have a separate suspend/resume problem. I don't had many time to test it , but so far I don't see any regression ... (In reply to comment #10) > Um, worked fine until suspend/resume. Then self brightening came back. > What is your kernel version ? VT switch apparently does not trigger the brightening. kernel is 2.6.23.1-21.fc7, latest F7 updates kernel. (In reply to comment #11) > Hm, that may be a separate problem... are you using vbetool post in your resume > path? > No idea. Just doing stock KDE kpowersave suspend to RAM. (In reply to comment #14) > VT switch apparently does not trigger the brightening. > > kernel is 2.6.23.1-21.fc7, latest F7 updates kernel. > Could you try a 2.6.22 from fedora and report any difference ? Well, if VT switch doesn't cause the problem, then there's a bug in your suspend/resume path somewhere. My guess is that your distro is using vbetool post on resume, which resets the chip and may increase the brightness to a default (high) level. A proper fix for this is to use the latest DRM bits, which include suspend/resume functionality for i915, and disable vbetool on your system. Either way, you should open a new bug for that problem if the above doesn't work for you. |
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Moving from Fedora 5 to 7 on a Dell Latitude D610 with Intel 915GM we see the brightness automatically increase to maximum quickly after any attempt to dim the display. Kills battery life. (II) Module intel: vendor="X.Org Foundation" compiled for 1.3.0, module version = 2.1.1 Module class: X.Org Video Driver ABI class: X.Org Video Driver, version 1.2