Red Hat Bugzilla – Bug 617617
xrandr -rotate normal after a xrandr -rotate right = black screen of doom
Last modified: 2018-04-11 06:00:08 EDT
Description of problem:
xrandr -output LVDS1 -rotate right
xrandr -output LVDS1 -rotate normal
gives me a black screen.
if I then hit, ctrl-alt-f2, then ctrl-alt-f1, I get a non-black screen, which is frozen and takes a few minutes, but then unlocks.
Version-Release number of selected component (if applicable):
Has been happening consistently, and of course when I went to file this bug, it seems to be working.
Steps to Reproduce:
1. xrandr -output LVDS1 -rotate right
2. xrandr -output LVDS1 -rotate normal
Xorg log: http://fpaste.org/32Pt/
My hardware is a Fujitsu T4215 Tablet PC.
Ok this is still a problem, it is now always failing to rotate back to normal properly
xrandr --output LVDS1 --rotate right
xrandr --output LVDS1 --rotate normal
produces a black screen
pressing ctrl-alt-f2 then ctrl-alt-f1 gives me a non black screen.
Created attachment 436877 [details]
This is the entire xorg log, I tried rotating my tablet back and forth multiple times between tablet/laptop postion, this issue xrandr --rotate commands
Created attachment 436878 [details]
Xorg.0.log after issues xrandr --rotate left --output LVDS1 and xrandr --rotate right --output normal multiple times
I can only replicate the black screen when issuing a rotate from inside of the X display itself, as a test I issues
xrandr --rotate left --output LVDS1 -display :0 from a remote machine over SSH
xrandr --rotate normal --output LVDS1 -display :0
and everything works fine.
However doing things in the X session causes black screens
hitting ctrl alt f2 to switch to terminal mode, than ctrl alt f1 to switch back to the X session, returns me to the proper screen.
Created attachment 436879 [details]
Could you boot with drm.debug=15 and reproduce the issue?
Then attach the /var/log/dmesg from that attempt, as text/plain please.
Thanks in advance
Fedora Bugzappers volunteer triage team
Created attachment 436942 [details]
/var/log/dmesg after drm.debug=15
Is there any more information we can get out of this bug report?
I'm curious if the engineers have a place to go hunting for this bug.
I have an Intel chip I can try reproducing with and patching if I figure out where the issue may be at, is it in the i915.ko kernel driver, Xorg intel_drv.so driver or xrandr?
Jasper, _probably_ xorg-x11-server-Xorg or xorg-x11-drv-intel. The drm.debug trace doesn't contain much meaningful information AFAICT, so I'm hesitating to mark as triaged. I'll ask on IRC.
Fedora Bugzappers volunteer triage team
The problem has been upstreamed, still yet not solution, but it seems that the intel graphics developers are looking into it:
This seems to be similar as bug 655331, and bug 694006.
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