Ubuntu

Comment 2 for bug 840140

Created attachment 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.