[Bug 59066] New: [i965] mode setting with xrandr does not work reliable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59066

          Priority: medium
            Bug ID: 59066
          Assignee: chris at chris-wilson.co.uk
           Summary: [i965] mode setting with xrandr does not work reliable
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: ceggers at gmx.de
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

Created attachment 72557
  --> https://bugs.freedesktop.org/attachment.cgi?id=72557&action=edit
xrandr --verbose (before mode switching)

Bug description:
Since installing openSUSE 12.1, I've problems when switching to another mode
(again, see #24748).

System environment:
-- chipset: G965
-- system architecture: x86_64
-- xf86-video-intel: 2.20.3
-- xserver: 1.12.3
-- mesa: 8.0.4
-- libdrm: 2.4.33
-- kernel: 3.4.11
-- Linux distribution: openSUSE 12.1
-- Machine or mobo model: Intel mainboard with i965G chipset
-- Display connector: DVI (via ADD2 card)

Reproducing steps:
- Power up, boot system and login to KDE desktop (resolution is now
1600x1200 at 60)
- Open konsole
    xrandr --output DVI1 --mode 0x4b # (1024x768 at 60)
    sleep 5
    xrandr --output DVI1 --mode 0x43 # (1600x768 at 60)
- I've everything is ok, repeat mode switching


Additional info:
-- Previous bug report for openSUSE 11.4 (has been solved):
https://bugs.freedesktop.org/show_bug.cgi?id=24748
-- Photo:
https://bugs.freedesktop.org/attachment.cgi?id=30732

Upgrading to kernel 3.7.1 didn't help.

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