Red Hat Bugzilla – Bug 524603
After updating xorg-x11-server-*, laptop backlight switches off
Last modified: 2015-01-14 18:23:44 EST
Created attachment 361926 [details]
Description of problem:
After updating xorg-x11-server-* components, the backlight of my laptop's internal display switches off after some time (~10-20 minutes), regardless of keyboard or mouse activity. It doesn't switch on after such activity as well.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Update to the versions above.
2. Boot up laptop, log into gnome
3. Do something for a while
Backlight switches off after a while, can only be restored with:
$ xrandr --output LVDS1 --off
$ xrandr --output LVDS1 --auto
After a while, it switches off again.
Backlight doesn't switch off.
The external monitor which is attached to output DVI1 (and mirrors the display of the internal display LVDS1) doesn't have this problem.
Created attachment 361928 [details]
BTW, the laptop is a Dell Latitude D830 with an internal Intel graphics adapter:
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c) (prog-if 00 [VGA controller])
Subsystem: Dell Device 01fe
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 28
Region 0: Memory at f6e00000 (64-bit, non-prefetchable) [size=1M]
Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at efe8 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities:  MSI: Enable+ Count=1/1 Maskable- 64bit-
Address: fee0200c Data: 41a1
Capabilities: [d0] Power Management version 3
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Bridge: PM- B3+
Kernel driver in use: i915
Kernel modules: i915
I just measured that it takes exactly 10 minutes from waking up the display with "xrandr" as described above to the display backlight being switched off again. Someone suggested to me that gnome-power-manager might throw spanners in here, but it wasn't even running at the time and is configured to let the display sleep after 30 mins (AC) or 5 mins (battery), respectively.
Hmm, the problem might be not related to X after all, a colleague had the same problem when booting into text mode. I'm a bit puzzled about the culprit because I saw the problem only after updating to these packages and then rebooting:
bubbros-1.6-5.fc11 Sun 20 Sep 2009 11:56:45 AM CEST
xorg-x11-server-Xvfb-1.6.4-0.1.fc11 Sat 19 Sep 2009 10:57:44 PM CEST
xscreensaver-extras-gss-5.10-1.fc11 Sat 19 Sep 2009 10:57:42 PM CEST
xorg-x11-server-Xnest-1.6.4-0.1.fc11 Sat 19 Sep 2009 10:57:40 PM CEST
xscreensaver-gl-extras-gss-5.10-1.fc11 Sat 19 Sep 2009 10:57:39 PM CEST
xscreensaver-5.10-1.fc11 Sat 19 Sep 2009 10:57:39 PM CEST
pciutils-devel-3.1.4-2.fc11 Sat 19 Sep 2009 10:57:38 PM CEST
kdenetwork-devel-4.3.1-2.fc11 Sat 19 Sep 2009 10:57:36 PM CEST
tzdata-java-2009m-1.fc11 Sat 19 Sep 2009 10:57:30 PM CEST
xorg-x11-server-Xorg-1.6.4-0.1.fc11 Sat 19 Sep 2009 10:57:27 PM CEST
tzdata-2009m-1.fc11 Sat 19 Sep 2009 10:57:14 PM CEST
xorg-x11-server-common-1.6.4-0.1.fc11 Sat 19 Sep 2009 10:57:08 PM CEST
libv4l-devel-0.6.1-1.fc11 Sat 19 Sep 2009 10:57:08 PM CEST
gnome-settings-daemon-2.26.1-10.fc11 Sat 19 Sep 2009 10:56:35 PM CEST
util-linux-ng-2.14.2-11.fc11 Sat 19 Sep 2009 10:55:49 PM CEST
kdenetwork-4.3.1-2.fc11 Sat 19 Sep 2009 10:55:28 PM CEST
chromium-22.214.171.124-0.1.20090916svn26424.fc11 Sat 19 Sep 2009 10:55:14 PM CEST
smartmontools-5.38-13.fc11 Sat 19 Sep 2009 10:55:04 PM CEST
libcap-ng-0.6.1-1.fc11 Sat 19 Sep 2009 10:55:03 PM CEST
pciutils-3.1.4-2.fc11 Sat 19 Sep 2009 10:55:02 PM CEST
xscreensaver-gl-extras-5.10-1.fc11 Sat 19 Sep 2009 10:54:56 PM CEST
xscreensaver-gl-base-5.10-1.fc11 Sat 19 Sep 2009 10:54:52 PM CEST
xscreensaver-extras-5.10-1.fc11 Sat 19 Sep 2009 10:54:43 PM CEST
v8-1.3.11-1.20090916svn2903.fc11 Sat 19 Sep 2009 10:54:34 PM CEST
xscreensaver-base-5.10-1.fc11 Sat 19 Sep 2009 10:54:29 PM CEST
pciutils-libs-3.1.4-2.fc11 Sat 19 Sep 2009 10:54:28 PM CEST
kdenetwork-libs-4.3.1-2.fc11 Sat 19 Sep 2009 10:54:26 PM CEST
libv4l-0.6.1-1.fc11 Sat 19 Sep 2009 10:54:22 PM CEST
To my naïve eyes, not many of these should be contributing to the issue...
Oh, yes, xscreensaver. Throwing the bug there.
(In reply to comment #4)
> xscreensaver-extras-gss-5.10-1.fc11 Sat 19 Sep 2009 10:57:42 PM CEST
> xscreensaver-gl-extras-gss-5.10-1.fc11 Sat 19 Sep 2009 10:57:39 PM CEST
(In reply to comment #5)
> Oh, yes, xscreensaver. Throwing the bug there.
I don't use the xscreensaver hacks. If gnome-screensaver kicks in, it shows the floating fedora hack. Nevertheless, the screensaver shouldn't be active (and isn't on the external display). The backlight stays switched off when changing to a VT text console. At this point, I don't have a real idea what could cause this...
Created attachment 362379 [details]
Xorg.0.log from LT20 laptop
I have similar issue except the backlight setting is off after suspend/resume.
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