Comment 44 for bug 557266

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Alexei (neowall) wrote : Re: [Radeon kernel module] drmRadeonCmdBuffer: -22. Kernel failed to parse or rejected command stream

Also still getting this or a similar issue with Ubuntu 10.10 and Radeon X1650 even after switching to a 2.6 mainline kernel build.

$ lspci -nn | grep VGA
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV535 [Radeon X1650 Series] [1002:71c7] (rev 9e)

$ glxgears

Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
302 frames in 5.0 seconds = 60.274 FPS

That FPS is way too low for the card. Attempting to resize the window instantly produces a crash and the following message:

drmRadeonCmdBuffer: -22. Kernel failed to parse or rejected command stream. See dmesg for more info.

$ dmesg | tail
[ 431.214850] [drm:r100_cs_track_check] *ERROR* [drm] Buffer too small for color buffer 0 (need 400640 have 389120) !
[ 431.214860] [drm:r100_cs_track_check] *ERROR* [drm] color buffer 0 (320 4 0 313)
[ 431.214863] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !