[ltp] Diagnosed: Sluggish performance of radeon 7500 with Xorg

[Nick Bower]

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I couldn't work out why my radeon 7500 (thinkpad t42) went from 700fps
down to less than 200 when I upgraded to Xorg (6.7) from XFree86.  The
Xorg logs insist DRI was being started.  A little more digging revealed
the following...

Looks like the DRI interface changed maybe?  Looks like I should
upgrade.

I only post this because another person couldn't work out why DRI was
stated to be working in the X logs, but obviously wasn't due to really
sluggish performance.

nick


$ export LIBGL_DEBUG=3D'verbose'

$ glxinfo
name of display: :0.0
libGL: XF86DRIGetClientDriverName: 4.0.1 radeon (screen 0)
libGL: OpenDriver: trying /usr/X11R6/lib/modules/dri/radeon_dri.so
libGL error: dlopen /usr/X11R6/lib/modules/dri/radeon_dri.so failed
(/usr/X11R6/lib/modules/dri/radeon_dri.so: undefined symbol:
_glapi_noop_enable_warnings)
libGL error: unable to find driver: radeon_dri.so
libGL: XF86DRIGetClientDriverName: 4.0.1 radeon (screen 0)
libGL: OpenDriver: trying /usr/X11R6/lib/modules/dri/radeon_dri.so
libGL error: dlopen /usr/X11R6/lib/modules/dri/radeon_dri.so failed
(/usr/X11R6/lib/modules/dri/radeon_dri.so: undefined symbol:
_glapi_noop_enable_warnings)
libGL error: unable to find driver: radeon_dri.so
display: :0  screen: 0
direct rendering: No




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Nick Bower <nick@nickbower.com>

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