[Bug 31841] New: [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=31841

           Summary: [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !
           Product: DRI
           Version: unspecified
          Platform: All
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: discardi.nicola at gmail.com


Hi when i try to use wayland compositor with opensource driver  i see the
following error :

radeon: The kernel rejected CS, see dmesg for more information.
radeon: The kernel rejected CS, see dmesg for more information.
radeon: The kernel rejected CS, see dmesg for more information.
radeon: The kernel rejected CS, see dmesg for more information.

and dmesg show :

[  559.581198] Forbidden register 0x43E0 in cs at 1
[  559.581204] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !
[  559.589396] Forbidden register 0x43E0 in cs at 1
[  559.589401] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !


the problem with is with default ubuntu 10.10 kernel / driver / mesa  and with
latest  xserver-xorg-video-ati_6.13.99+git20101120.7ad1f015  / kernel
2.6.37-git3 / libgl1-mesa-dri_7.10.0+git20101118.3dcc3153

my video card is a ATI Technologies Inc Redwood [Radeon HD 5600 Series]

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