Summary: | DPMS does not turn off LCD backlight on G73 (NV4B) [GeForce 7600 GS] | ||
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Product: | xorg | Reporter: | alexander korolev <kilork> |
Component: | Driver/nouveau | Assignee: | Nouveau Project <nouveau> |
Status: | RESOLVED MOVED | QA Contact: | Xorg Project Team <xorg-team> |
Severity: | normal | ||
Priority: | medium | CC: | erik-freedesktop-bugzilla |
Version: | unspecified | ||
Hardware: | x86-64 (AMD64) | ||
OS: | Linux (All) | ||
Whiteboard: | |||
i915 platform: | i915 features: |
Description
alexander korolev
2014-10-28 19:53:04 UTC
Hi, I'm also on Fedora and have been observing similar issues on my Dell XPS 17/GeForce GT 555M where the backlight of the internal display doesn't turn off any more (xset dpms force off) starting with early kernel 3.16 snapshots (git tag v3.15-9837-g682b7c1c8ea8 was the first one to be broken). This was reported to Red Hat bugzilla @ https://bugzilla.redhat.com/show_bug.cgi?id=1123661 which is currently still open. In this bug report I've found out which exact commit is likely to be the cause of my backlight issue and I've also prepared a patch which resolves the issue for me. Perhaps it will resolve your backlight issue as well. If you want to try it out yourself, you can find a test kernel build @ https://koji.fedoraproject.org/koji/taskinfo?taskID=9172516 which can be installed with 'yum install http://kojipkgs.fedoraproject.org//work/tasks/2518/9172518/kernel-core-4.0.0-0.rc2.git2.1.bug1123661.fc22.x86_64.rpm http://kojipkgs.fedoraproject.org//work/tasks/2518/9172518/kernel-modules-4.0.0-0.rc2.git2.1.bug1123661.fc22.x86_64.rpm' This kernel is targeted for Fedora 22 (currently in Alpha) but should also work fine on Fedora 20 and 21. To make a fair comparison you should also try the regular kernel (without the patch) which can be installed with 'yum install http://kojipkgs.fedoraproject.org//packages/kernel/4.0.0/0.rc2.git2.1.fc22/x86_64/kernel-core-4.0.0-0.rc2.git2.1.fc22.x86_64.rpm http://kojipkgs.fedoraproject.org//packages/kernel/4.0.0/0.rc2.git2.1.fc22/x86_64/kernel-modules-4.0.0-0.rc2.git2.1.fc22.x86_64.rpm' Could you test if this also resolves your backlight issue? (In reply to Erik van Pienbroek from comment #1) > Hi, > > I'm also on Fedora and have been observing similar issues on my Dell XPS > 17/GeForce GT 555M where the backlight of the internal display doesn't turn > off any more (xset dpms force off) starting with early kernel 3.16 snapshots > (git tag v3.15-9837-g682b7c1c8ea8 was the first one to be broken). This was > reported to Red Hat bugzilla @ > https://bugzilla.redhat.com/show_bug.cgi?id=1123661 which is currently still > open. The patch referenced in that bug report relates to DP outputs. This bug report is about a NV4B which came out in ~2005, and has no DP outputs. It also uses the 'dispnv04' path rather than the nv50_display path and is very different. Okay my apologies for the noise then. Would it still make sense to file a separate bug report for my backlight issue (next to the one already on Fedora Bugzilla) ? -- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/145. |
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