Created attachment 68683 [details] Xorg.0.log Using AMD A4-3420M APU, have NOT been able to use the R600 driver on either Suse (12.x, factory), Arch Linux (latest built, or git xorg/mesa/dri build), or Ubuntu (12.04, 12.10b2). ALL various combinations of xorg 1.12/1.13, xorg-video-ati, mesa, and kernel 3.5-3.6 give the same black screen after startup, transition to Xorg corrupts all VT's. KMS for Single user or non-X sessions works fine. Grub boot with "radeon.audio=0" does alleviate some corruption on VT7 (but not enough to be usable). Changing accel options or even disabling accel has no effect. Appears there is something specific to the A4-3420M(6410D, chipID 0x9644, identified by system as a Sumo2) that is affected by this.
Created attachment 68684 [details] dmesg, booted drm.debug=6
Can your try kernel 3.7? There were some fixes that went in that may help.
(In reply to comment #2) > Can your try kernel 3.7? There were some fixes that went in that may help. Still the same. Upgraded xorg on Ubuntu (from xorg-edgers ppa), added 3.7.0-rc1 mainline kernel from Ubuntu kernel team.
Created attachment 68713 [details] Ubuntu updated Xorg.0.log
Created attachment 68714 [details] 3.7.0-rc1 dmesg (no debug)
Created attachment 68717 [details] 3.7.0-rc1 dmesg (drm.debug=6)
Can you try a mesa 8.0.x release? This might be a duplicate of bug 56405.
Created attachment 69579 [details] Debian Sid w/3.6.8-pf dmesg (drm.debug=6) Switched system to Debian Sid, clean install. Sid is tracking 8.0.5-1 mesa http://packages.debian.org/search?keywords=mesa&searchon=names&suite=unstable§ion=all Screen corruption still, using Sid 3.2.0-4 stock kernel, and 3.6.8-pf kernel from here: http://kernel.night-leshiy.ru/ Attaching drm.debug=6 dmesg from Debian 3.6.8-pf kernel
Created attachment 69580 [details] Debian Sid w/3.6.8-pf xorg.0.log (fail) Xorg.0.log from above failure (Debian Sid, 3.6.8-pf kernel)
Of note: with most kernel combo and 8.0 mesa branch (also tried on Arch Linux), failures and corruption DO NOT prevent VT-switching as the 9.0 branch does.
Created attachment 72306 [details] dmesg drm.debug=6 Still same issue, linux-3.8-rc1. Can see mouse on black background. Cannot switch VTs. xorg-server 1.13.1 ati-dri (mesa ATI driver) 9.0.1
Created attachment 72307 [details] Xorg.0.log xorg log. Not using any custom directives in xorg.conf (blank)
you can try https://bugs.freedesktop.org/show_bug.cgi?id=63599#c29
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