[Bug 75459] New: [Radeon HD 6770] Crash/Hang on logout with Multi-Head rotated screen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75459

          Priority: medium
            Bug ID: 75459
          Assignee: xorg-driver-ati at lists.x.org
           Summary: [Radeon HD 6770] Crash/Hang on logout with Multi-Head
                    rotated screen
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: brent at hostetler.ws
          Hardware: Other
            Status: NEW
           Version: 7.7 (2011)
         Component: Driver/Radeon
           Product: xorg

Created attachment 94678
  --> https://bugs.freedesktop.org/attachment.cgi?id=94678&action=edit
Xorg log

The problem is directly related to multiple monitors and rotating one or both
displays. I have three monitors hooked up to a single radeon multihead card in
the following orientation: vert - horiz - vert.

On logout, the display goes to sleep. I can ssh into the machine and ps aux
shows no X processes still running but displays is black/power-save. Turn
monitor on/off and display comes back on with no command prompt no keyboard
response. from ssh shell I run startx. X starts backup on main display and If I
do not rotate the screens I am able to logoff and get command prompt. Keyboard
is responsive but keys are garbage or not displayed.

If I type '$ reset' then keyboard and display are now back working properly.

I can prevent crash by doing the following prior to logout:
$ xrandr --output DisplayPort-0 --rotate normal
$ xrandr --output DisplayPort-3 --rotate normal




=====================

My monitors are setup as following: 

/etc/X11/xorg.conf.d/40-monitors.conf

Section "Monitor"
Identifier "DisplayPort-0"

Option "PreferredMode" "1920x1080"
Option "Position" "0 0"
Option "Rotate" "right"
EndSection

Section "Monitor"
Identifier "DisplayPort-1"

Option "PreferredMode" "2560x1080"
Option "Position" "1080 605"
EndSection

Section "Monitor"
Identifier "DisplayPort-3"

Option "PreferredMode" "1920x1080"
Option "Position" "3642 0"
Option "Rotate" "left"
EndSection

===============

$ uname -a
Linux magneto 3.13.5-1-ARCH #1 SMP PREEMPT Sun Feb 23 00:25:24 CET 2014 x86_64
GNU/Linux

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