[Bug 25838] New: OpenGl app crashes with "No buffer for z buffer"

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25838

           Summary: OpenGl app crashes with "No buffer for z buffer"
           Product: xorg
           Version: 7.5
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: trevor at shartrec.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=32380)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=32380)
Xorg.o.log

I am the current maintainer of a java application that uses OpenGL via the JOGL
bindings (http://sourceforge.net/projects/fgflightplanner).  This app crashes
with the following message in the console when using the latest Radeon driver
under Fedora 12:
drmRadeonCmdBuffer: -22. Kernel failed to parse or rejected command stream. See
dmesg for more info.

dmesg has the following 2 entries:
[drm:r100_cs_track_check] *ERROR* [drm] No buffer for z buffer !
[drm:radeon_cs_ioctl] *ERROR* Invalid command stream !

If I boot with radeon.modeset=0, the application runs (but not well, always on
top of everything)

The application is a mature app and runs well with other drivers (fglrx) and on
other platforms.

I am using Fedora 12 with all the latest updates:
$ uname -a
Linux kelpie5.campbell.priv 2.6.31.9-174.fc12.i686 #1 SMP Mon Dec 21 06:24:20
UTC 2009 i686 i686 i386 GNU/Linux


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