[Bug 99138] New: Xorg can't be restarted gracefully running CEDAR graphics card

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99138

            Bug ID: 99138
           Summary: Xorg can't be restarted gracefully running CEDAR
                    graphics card
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: arthur.marsh at internode.on.net
        QA Contact: xorg-team at lists.x.org

Running Debian unstable with:

xserver-xorg-video-radeon                     1:7.8.0-1+b1

and minimalist /etc/X11/xorg.conf:

Section "Device"
        Identifier      "Radeon CEDAR"
        Driver          "radeon"
EndSection

I experience the lockup of the video playback window running mpv (requires kill
-HUP from another window to terminate mpv), chromium windows not refreshing
unless I switched to vt1 and back to vt7, and 

service lxdm restart

failing. I needed to kill -9 the Xorg process to avoid having to reboot to
restart Xorg.

Running mesa 13.0.2 and ddx based on Debian version 2:1.19.0-3.0

Video card identifies itself as:

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cedar
[Radeon HD 5000/6000/7350/8350 Series] (prog-if 00 [VGA controller])
        Subsystem: Gigabyte Technology Co., Ltd Cedar [Radeon HD
5000/6000/7350/8350 Series]
        Flags: bus master, fast devsel, latency 0, IRQ 29, NUMA node 0
        Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Memory at fe9e0000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at c000 [size=256]
        Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010
<?>
        Capabilities: [150] Advanced Error Reporting
        Kernel driver in use: radeon
        Kernel modules: radeon

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