Bug#379323: mesa-utils: glxinfo does not report library open problems
Package: mesa-utils
Version: 6.3.2-2.1
Severity: important
I unfortunately just spent hours of debugging trying to find why I wasn't
getting accelerated GL after installing 3D drivers, and having the right
/usr/lib/libGL.so.1 and friends.
I would have killed for having glxinfo tell me what the problem was until
I found out a day later about LIBGL_DEBUG=verbose glxinfo, which then
gave me:
gandalf:~$ LIBGL_DEBUG=verbose glxinfo
name of display: :0.0
libGL: XF86DRIGetClientDriverName: 8.26.18 fglrx (screen 0)
libGL: OpenDriver: trying /usr/X11R6/lib/modules/dri/fglrx_dri.so
libGL error: dlopen /usr/X11R6/lib/modules/dri/fglrx_dri.so failed (/usr/X11R6/l
ib/modules/dri/fglrx_dri.so: cannot open shared object file: No such file or dir
ectory)
libGL error: unable to find driver: fglrx_dri.so
This was due to a packaging bug, which I fixed with a simple symlink in about
30 seconds, but I would really really have liked for glxinfo to tell me that
it couldn't open the driver and that's why I was still getting Mesa.
Please consider making LIBGL_DEBUG=verbose or equivalent, a default to help
out the countless people on the net like me who have spent too much time
tracking this problem.
I'm adding extra un-needed info so that google indexes it, and that
hopefully other people can find this instead of spending the time I spent.
With fglrx (fglrx-driver), and xorg 7.0.22, the driver was loading, dri was
initializing, but glxinfo would tell me:
gandalf:~$ glxinfo | grep direct
direct rendering: No
OpenGL renderer string: Mesa GLX Indirect
After ln -s /usr/lib /usr/X11R6/lib/modules, it allowed libGL to find
/usr/X11R6/lib/modules/dri/fglrx_dri.so which really had been installed
in /usr/lib/dri/fglrx_dri.so
Now, I do get:
gandalf:~$ glxinfo | grep -E '(direct|renderer)'
direct rendering: Yes
OpenGL renderer string: MOBILITY FIREGL T2 Pentium 4 (SSE2) (FireGL) (GNU_ICD)
Thanks
Marc
-- System Information:
Debian Release: woody
APT prefers unstable
APT policy: (900, 'unstable'), (500, 'oldstable'), (500, 'testing')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17.6-pmup-desktop-marc1y
Locale: LANG=en_US.ISO-8859-15, LC_CTYPE=en_US.ISO-8859-15 (charmap=ISO-8859-15) (ignored: LC_ALL set to en_US.ISO-8859-15)
Versions of packages mesa-utils depends on:
di freeglut3 2.4.0-4 OpenGL Utility Toolkit
ii libc6 2.3.6-15 GNU C Library: Shared libraries
pi libgl1-mesa-glx [libgl1] 6.4.2-1 A free implementation of the OpenG
pi libglu1-mesa [libglu1] 6.4.2-1 The OpenGL utility library (GLU)
ii libx11-6 6.9.0.dfsg.1-1 X Window System protocol client li
mesa-utils recommends no packages.
-- no debconf information
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