[Bug 56081] New: (SUMO2) Black screen on X Launch, corrupted VTs when using KMS

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Oct 17 04:16:28 PDT 2012


          Priority: medium
            Bug ID: 56081
          Assignee: dri-devel at lists.freedesktop.org
           Summary: (SUMO2) Black screen on X Launch, corrupted VTs when
                    using KMS
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: autonymous at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/DRI/R600
           Product: Mesa

Created attachment 68683
  --> https://bugs.freedesktop.org/attachment.cgi?id=68683&action=edit

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.

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