[Bug 39282] New: radeon HG6790 card produces black+white horizontal stripes on screen when launching Xorg

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=39282

           Summary: radeon HG6790 card produces black+white horizontal
                    stripes on screen when launching Xorg
           Product: xorg
           Version: 7.6
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: tmciolek at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=49177)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=49177)
bug report files

radeon HG6790 card produces black+white horizontal stripes on screen when
launching Xorg

Distribution is Debian Wheezy
xorg 7.6
Radeon driver 6.14.2

Tried kernel 2.6.39-2 (Debian Build), 2.6.39.3 and 3.0.0RC7

on boot the system seemsto load the firmware/microcode and to launch launch
into a high resolution console.

Test case 1: Run 'Xorg -retro', no xorg config, 
Produces a set of horizontal black and white stripes with colour speccles.
CLearly visable X shapedmouse pointer apprears and can be moved on the screen.
Xorg log Xorg.0.log.reto attached.


Test case 2: run startx to start Xorg system
Produces a set of horizontal black and white stripes with colour speccles,
after a short time,. the screen blanks and the refreshes to same image. a
backtrace is left in the Xorg.o.log. Xorg log Xorg.0.log.crash attached.

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