Bug 666462
| Summary: | [NVa5] Brightness (backlight) control madness on Lenovo W510 | ||||||||
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| Product: | [Fedora] Fedora | Reporter: | David Kovalsky <dkovalsk> | ||||||
| Component: | xorg-x11-drv-nouveau | Assignee: | Ben Skeggs <bskeggs> | ||||||
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||||
| Severity: | medium | Docs Contact: | |||||||
| Priority: | high | ||||||||
| Version: | 14 | CC: | airlied, ajax, benedikt.morbach+fedora, benl, bskeggs, christopherheiny, ruschaaron | ||||||
| Target Milestone: | --- | Keywords: | Patch, Regression, Triaged | ||||||
| Target Release: | --- | ||||||||
| Hardware: | Unspecified | ||||||||
| OS: | Unspecified | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2011-04-06 22:53:20 UTC | Type: | --- | ||||||
| Regression: | --- | Mount Type: | --- | ||||||
| Documentation: | --- | CRM: | |||||||
| Verified Versions: | Category: | --- | |||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||
| Embargoed: | |||||||||
| Attachments: |
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Created attachment 471225 [details]
gnome-power-manager --verbose output
As a regular user, executed `killall gnome-power-manager'.
Then `gnome-power-manager --verbose | tee gpm.log' (which is attached).
+ I've just noticed I can't find the brightness applet I've used in F13 + Gnome.
JFTR, Xorg server version: xorg-x11-server-Xorg-1.9.3-3.fc14.x86_64 Found this in /var/log/messages, if relevant: thinkpad_acpi: Standard ACPI backlight interface available, not loading native one. Tried booting into F13 kernel 2.6.34.7-66.fc13.x86_64, the brightness is at the max. But I'm unable to adjust it by the brigtness keys. And the helper app prints a nonsense current value. HTH. $ gnome-power-backlight-helper --get-brightness 1073782252 $ gnome-power-backlight-helper --get-max-brightness 1025 I had exactly this issue when I installed F14, but worked around it by using the proprietary binary blob from nvidia. I believe the correct solution is this commit from upstream: http://cgit.freedesktop.org/nouveau/linux-2.6/patch/?id=fcd4800dd07f0e7923b91e8a9f745f3c2a0e1dda As this doesn't look as if it would break anything, maybe it could be added as a patch to Fedora's kernel. This bug is probably related and the patch in there is also a viable workaround, iirc: https://bugzilla.redhat.com/show_bug.cgi?id=625171 I can confirm that brightness is at the max with nvidia binary blob. Downside to that is that I can't manage brightness (it's always at the max). I just removed the binary blob and built a new kernel using the above upstream patch[1]. Brightness control now works as expected. Note that rawhide isn't affected, probably because the patch already is upstream[2]. (included in 2.6.37) This should probably be rolled out as an update for F14. This would probably also fix [3] (maybe it this even is a duplicate) As the fix is a kernel patch, should this bug be reassigned to Fedora/kernel? [1] http://cgit.freedesktop.org/nouveau/linux-2.6/patch/?id=fcd4800dd07f0e7923b91e8a9f745f3c2a0e1dda [2] http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5bead799d3f8f1500c4b59301b8a2732a92f559f [3] https://bugzilla.redhat.com/show_bug.cgi?id=625171 btw, you can also get brightness control when using the blob, by setting Option "RegistryDwords" "EnableBrightnessControl=1" in the "Device" Section of your xorg.conf (In reply to comment #7) > I just removed the binary blob and built a new kernel using the above upstream > patch[1] > > [1] > http://cgit.freedesktop.org/nouveau/linux-2.6/patch/?id=fcd4800dd07f0e7923b91e8a9f745f3c2a0e1dda This may be a total n00b question, but how do I apply this patch? Thanks I am also experiencing this issue. When can we expect to see an updated kernel? *** This bug has been marked as a duplicate of bug 625171 *** |
Created attachment 471224 [details] /var/log/Xorg.0.log After upgrading from F13 to F14 backlight (brightness) control on Lenovo W510 notebook got totally mad. There are a couple of issues: - after boot the display is too dark. I'm barely able to see the letters, but the brightness control shows me I'm at the max. - curiously, after plugging/unplugging the power connector the display goes to very-very-max bright, that I'm used to from F13. - BUT, after I try to take the brightness down just by one level I go back to pretty dark (like just after boot). kernel-2.6.35.10-74.fc14.x86_64 xorg-x11-drv-nouveau-0.0.16-13.20101010git8c8f15c.fc14.x86_64 Attaching a couple of logs, please ask for more if I haven't supplied the right ones.