Red Hat Bugzilla – Bug 490041
ThinkPad T43 LCD black after being turned off (lid close, xrandr)
Last modified: 2009-05-12 15:09:23 EDT
Created attachment 335022 [details]
Xorg.0.log from Thinkpad T43
If I close the lid on my ThinkPad (i915GM chipset), when I open it again the screen is black (with the backlight still on).
Same thing happens if I turn the screen off using xrandr / gnome-display-properties - if I try to re-enable the display, it never comes on.
Keyboard still works, but VT switch does nothing. I can ssh in and check logs, but there's nothing interesting in Xorg.0.log or syslog.
Curiously, suspend/resume work fine - so when this happens, I can suspend my machine and the display comes back on resume. This also doesn't happen if I'm running with 'nomodeset'.
Attaching Xorg.0.log, so mcepl won't yell at me :D
What happens if you do 'xset dpms force off ; sleep 3 ; xset dpms force on' ? Does the screen come back?
Yeah, that does exactly what you'd expect: panel turns off for three seconds, then comes back just as it was.
When you open the lid, the screen/backlight turns *on*, but it's black. Nothing seems to revive it short of suspend/resume.
Interestingly, trying to kill X when it's in this state (ssh laptop.local, sudo telinit 3) causes it to hard-lock - no keyboard input, can't suspend, etc.
Same for me on my T61p turns off for three seconds then comes back just as it was. ( xset dpms force off ; sleep 3 ; xset dpms force on" ) which makes me wonder
if this is actually caused by something that happens after we close the lid and leave it closed for x period of time. something has started like the screen-saver or something that locks out the monitor..
(In reply to comment #0)
> Attaching Xorg.0.log, so mcepl won't yell at me :D
I don't yell at anybody (mostly ;-)). But there is apparently not much to do and ajax is here, so I will let him to have a fun.
One other note: now that the GNOME code's all fixed, the screen turns on/off as expected for DPMS suspend (as set in the Power Management preferences). Closing the lid still causes nothing to get drawn, though.
Re comment #3 - no, it's not something that happens over a long period of time. I can close the lid, count to three, and reopen it and the screen will be dead.
Any clues about how I could debug this further would be greatly appreciated.
I have the same problem on a DELL inspiron 640m (same graphic card)
Things are getting better (on my x61). Now after closing/opening the lid *twice* the screen will come back. The first time it's blank.
I get one of the these messages every lid close/open cycle.
[drm] LVDS-8: set mode 1a
[drm] LVDS-8: set mode 1b
[drm] LVDS-8: set mode 1c
[drm] LVDS-8: set mode 1d
Of course I can't seen the first one until I perform the cycle again. At least I don't have to reboot now!
I haven't seen others report this but even when the display was blank I could at least switch to another virtual console and log in in text mode.
FWIW, I also get these on startup. I'm not sure if they are related.
[drm:i915_gem_object_bind_to_gtt] *ERROR* GTT full, but LRU list empty
[drm:i915_gem_object_pin] *ERROR* Failure to bind: -12
[drm:i915_gem_evict_something] *ERROR* inactive empty 1 request empty 1 flushing empty 1
Discussed on IRC a bit with ajax/krh present - consensus is that this is the same as bug 489907.
*** This bug has been marked as a duplicate of bug 489907 ***