[Bug 40979] New: ATI Radeon HD 3850 is completely unusable due to frequent lockups

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=40979

           Summary: ATI Radeon HD 3850 is completely unusable due to
                    frequent lockups
           Product: xorg
           Version: unspecified
          Platform: All
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: jeremyhu at freedesktop.org
         QAContact: xorg-team at lists.x.org


Created an attachment (id=51302)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51302)
dmesg

I am setting up an intel box with Ubuntu.  I am having frequent lockups in the
graphics stack when compositing (menu fades, moving windows, etc).  The screen
will go black and flash back on, usually with some graphics corruption which
will go away if I move the window.  This is highly reproducible (dragging a
window will cause it to happen with an expected time until occurrence of around
3 seconds.

The fglrx driver does not have this issue, so I'm using it instead.  I am
attaching dmesg and Xorg.0.log from when this occurred, and lspci -v shows this
identification for the card (obviously taken while using fglrx on a subsequent
boot):

01:00.0 VGA compatible controller: ATI Technologies Inc RV670 AGP [Radeon HD
3850] (prog-if 00 [VGA controller])
    Subsystem: PC Partner Limited Device 0028
    Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 16
    Memory at e0000000 (32-bit, prefetchable) [size=256M]
    I/O ports at ec00 [size=256]
    Memory at ff8f0000 (32-bit, non-prefetchable) [size=64K]
    Expansion ROM at ff800000 [disabled] [size=128K]
    Capabilities: [50] Power Management version 3
    Capabilities: [58] AGP version 3.0
    Kernel driver in use: fglrx_pci
    Kernel modules: fglrx, radeon

Kernel is:
Linux barret 2.6.38-11-generic #48-Ubuntu SMP Fri Jul 29 19:05:14 UTC 2011 i686
i686 i386 GNU/Linux

xf86-video-ati is:
Package: xserver-xorg-video-radeon
Version: 1:6.14.0-0ubuntu4.1

libdrm is:
Package: libdrm-radeon1                  
Version: 2.4.23-1ubuntu6

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