FS#43534 - [xf86-video-intel] desktop unresponsive after changing to tty2 and back

Attached to Project: Arch Linux
Opened by dhead666 (dhead666) - Wednesday, 21 January 2015, 15:53 GMT
Last edited by Laurent Carlier (lordheavy) - Tuesday, 14 April 2015, 12:05 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To Jan de Groot (JGC)
Andreas Radke (AndyRTR)
Laurent Carlier (lordheavy)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 2
Private No

Details

I'm running rootless Gnome X session on tty1 (no display manager) by just changing to tty2 and back the desktop becomes unresponsive.
This is a regression of xf86-video-intel 2.99.917-1, I don't have this issue with 2.99.916-1.

Nothing really useful in the log, I booted with kernel parameter drm.debug=0xe for extra logging, in the attached file I run journalctl to mark a moment before changing to tty2, after changing to tty1 and back.

It would be better that someone else confirm and make further testing as I've got another issue to figure out with my machine which related to i915 drm module (Haswell GT1).
   20150121_journal_just_changin... (25.9 KiB)
This task depends upon

Closed by  Laurent Carlier (lordheavy)
Tuesday, 14 April 2015, 12:05 GMT
Reason for closing:  Fixed
Additional comments about closing:  xf86-video-intel-2.99.917-5
Comment by dhead666 (dhead666) - Wednesday, 21 January 2015, 16:05 GMT
Of course I forgot to tag it [xf86-video-intel]
Comment by Vasily Khoruzhick (anarsoul) - Friday, 10 April 2015, 09:31 GMT
I've got the same issue on Ivy Bridge hardware
Comment by Vasily Khoruzhick (anarsoul) - Friday, 10 April 2015, 15:09 GMT
Xorg.log extracted from journalctl with several VT switches.
   Xorg.log (110.8 KiB)
Comment by dhead666 (dhead666) - Saturday, 11 April 2015, 00:14 GMT
@Vasily, I don't know if Xorg.log would be much of help, consider rebuilding xf86-video-intel with --enable-debug=full, that will give you a much more detailed Xorg.log, be advised the log could quickly reach hundreds and over gigabyte of size.
Comment by Vasily Khoruzhick (anarsoul) - Saturday, 11 April 2015, 07:51 GMT
Bisected to:

first bad commit: [b6eeb7a1f7efa591504070b606be655e27e6e9c2] Disable DRI3 by default

Passing --enable-dri3 to configure is enough to make it work properly. Please consider rebuilding a package with this option enabled.
Comment by Vasily Khoruzhick (anarsoul) - Monday, 13 April 2015, 11:31 GMT
Proper fix is commited into git://anongit.freedesktop.org/xorg/driver/xf86-video-intel
Could anyone from maintainers rebuild a package with attached patch?
   0001-sna-Mark-the-GPU-as-avai... (1.4 KiB)

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