Red Hat Bugzilla – Bug 503531
Low brightness when exiting from screensaver (Quadro 130M 042a)
Last modified: 2010-06-28 08:46:55 EDT
This is a fresh, default installation from the F11PR LiveCD, then fully updated.
When the screen saver kicks in, the brightness is lowered but it fails to come back at 100% when exiting from the lock screen, being stuck at about 30%.
Card is a Quadro NVS 130; from lspci -nn:
01:00.0 VGA compatible controller : nVidia Corporation Quadro NVS 130M [10de:042a] (rev a1)
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
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When you say 'fully updated', do you mean F11 or Rawhide? Is this possibly https://bugzilla.redhat.com/show_bug.cgi?id=508513 ?
Fedora Bugzappers volunteer triage team
I mean fully updated F11 and no, 508513 looks like a different issue because brightness _and_ colours are lost there, and an X restart is needed to workaround.
In my case, I just need to use the applet or the Fn buttons to bring brightness to the desired level.
Please also note, in the meantime I realized this is also happening with nvidia binary drivers, so it's likely another component to blame.
Assuming you're using GNOME, let's try gnome-power-manager. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=477631 looks interestingly similar. g-p-m does appear to try and set brightness to 30 when the system is idle by default, so it seems like it's not restoring it to its previous setting when the system goes out of idle.
Fedora Bugzappers volunteer triage team
Does installing the latest gnome-power-manager and DeviceKit-power packages in updates-testing (and then rebooting...) fix the problem?
I just installed from updates testing:
I can't reboot immediately but I'll let you know ASAP if the problem is gone
Yeah, it seems now the original brightness value is restored after the screensaver kicks in. Thanks!
Sorry, talked too early :(
got back from lunch and brightness was not resumed properly; the _really_ strange thing now is that brightness is reset to the low value each time I open gnome-power-preferernces.
Richard, it seems that I'm always idling: If I activate the "Dim display when idle" in the "On AC Power" tab I'm instantly put in the low brightness state, so I'm not even sure if we're still seeing the same bug I reported initially...
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