[Bug 55294] New: Running EGL demos on DRM from mesa-demos causes a corrupted output on NV50 - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 55294] New: Running EGL demos on DRM from mesa-demos causes a corrupted output on NV50
Date: Mon, 24 Sep 2012 21:39:02 +0000	[thread overview]
Message-ID: <bug-55294-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=55294

          Priority: medium
            Bug ID: 55294
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: Running EGL demos on DRM from mesa-demos causes a
                    corrupted output on NV50
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: lubosz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
          Hardware: Other
            Status: NEW
           Version: git
         Component: Driver/nouveau
           Product: xorg

Created attachment 67649
  --> https://bugs.freedesktop.org/attachment.cgi?id=67649&action=edit
kernel log with nouveau.reg_debug=0x600

When I try to run the mesa demos on the EGL/DRM backend I get a corrupted
screen. 

You can find the demos here:
http://cgit.freedesktop.org/mesa/demos/tree/src/egl/opengl

The binaries for the EGL/DRM backend have a "_screen" suffix.
The demos are using eglut with the eglut_screen/drm backend.

The following kernel errors are printed:
[drm] nouveau 0000:01:00.0: EvoCh 0 Mthd 0x086c Data 0x00005564 (0x0084 0x04)
[drm] nouveau 0000:01:00.0: EvoCh 1 Mthd 0x080c Data 0x00005564 (0x0084 0x04)

You can find a screenshot and an kernel log with the "nouveau.reg_debug=0x600"
flag in the attachment.

Kernel 3.6.0 RC5 on NV50.

A similar kernel error can be found in this bug:
https://bugs.freedesktop.org/show_bug.cgi?id=27483

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