Bug#357700: xlibmesa-gl and ldconfig beat nvidia-glx

[Stefan Bittner <sbi_@gmx.net>]

Package: xlibmesa-gl
Version: 6.9.0.dfsg.1-4
Severity: normal


I have Xorg 6.9 includin xlibmesa-gl and nvidia-glx installed.
xlibmesa-gls' libGL.so libraries are diverted by nvidia-glx. Now there ar two libGL.so...
libararies: libGL.so.1.2 from xlibmesa-gl and libGL.so.1.0.ABCD from nvidia-glx (ABCD depending
on the driver version).
Both have an soname of libGL.so.1
Whenever a shared library is installed by any package ldconfig may run. Ldconfig creates symbolic links in
/usr/lib based on soname and file name of the libraries it finds to the most recent version it.
Now since both libGL candidates have the same soname, but mesas' has a so.1.2, ldconfig creates
/usr/lib/libGL.so.1 -> libGL.so.1.2. Thus the mesa variant gets used despite the installation of nvidia-glx.
Programs depending on accelerated GL (like cedega) fail or have a redeced preformance.

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-k7
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages xlibmesa-gl depends on:
ii  libc6                     2.3.5-13       GNU C Library: Shared libraries an
ii  libx11-6                  6.9.0.dfsg.1-4 X Window System protocol client li
ii  libxext6                  6.9.0.dfsg.1-4 X Window System miscellaneous exte
ii  libxxf86vm1               6.9.0.dfsg.1-4 X Video Mode selection library

xlibmesa-gl recommends no packages.

-- no debconf information