[Bug 56743] New: Invalid command stream (bad START_3D) on DIS gpu

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=56743

          Priority: medium
            Bug ID: 56743
          Assignee: dri-devel at lists.freedesktop.org
           Summary: Invalid command stream (bad START_3D) on DIS gpu
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: intergalactic.anonymous at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

Created attachment 69522
  --> https://bugs.freedesktop.org/attachment.cgi?id=69522&action=edit
dmesg output

On my muxed hybrid system (Lenovo IdeaPad U455) X works fine with IGD gpu
(RS780M), but screen gets garbled when DIS gpu (RV710) is active. In dmesg
output there are lots of following messages:
[drm:r600_packet3_check] *ERROR* bad START_3D
[drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !

My system is:
Lenovo IdeaPad U455 with RS780M and RV710 gpus.
linux-3.7.0-rc3+
libdrm-2.4.39
xf86-video-ati-6.14.6
mesa-9.0
glu-9.0
xorg-server-1.12.3

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