I use the Steam client on Gentoo Linux and recently it stopped working which meant I had TF2 withdrawal :-)
I'm not a programmer so this may be a bad way to fix things but it worked for me. YMMV.
It all started when you launch the steam client it brings up a dialog:
OpenGL GLX context is not using direct rendering, which may cause performance problems
TF2 would not even launch :-(
Launching from a terminal gave me
libGL error: unable to load driver: r600_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: r600
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
After searching through all sorts of things I found an article about MatLab but with similar errors.
After doing the:
export LIBGL_DEBUG=verbose
things started to make sense.
libGL: screen 0 does not appear to be DRI3 capable
libGL: pci id for fd 7: 1002:68b8, driver r600
libGL: OpenDriver: trying /usr/lib/dri/tls/r600_dri.so
libGL: OpenDriver: trying /usr/lib/dri/r600_dri.so
libGL: dlopen /usr/lib/dri/r600_dri.so failed (/home/nick/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /usr/lib/dri/r600_dri.so))
libGL error: unable to load driver: r600_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: r600
libGL: OpenDriver: trying /usr/lib/dri/tls/swrast_dri.so
libGL: OpenDriver: trying /usr/lib/dri/swrast_dri.so
libGL: dlopen /usr/lib/dri/swrast_dri.so failed (/home/nick/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by /usr/lib/dri/swrast_dri.so))
libGL error: unable to load driver: swrast_dri.so
The libstdc++ in the Steam directory was
ls -al /home/nick/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6
lrwxrwxrwx 1 nick users 19 Jul 19 2014 /home/nick/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6 -> libstdc++.so.6.0.18
but the r600 driver was now built with
ls /usr/lib/gcc/i686-pc-linux-gnu/4.9.2/libstdc++.so.6*
/usr/lib/gcc/i686-pc-linux-gnu/4.9.2/libstdc++.so.6 /usr/lib/gcc/i686-pc-linux-gnu/4.9.2/libstdc++.so.6.0.20
So can you just link the one outside the Steam directory? Delete the link and try..
rm /home/nick/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6
ln -s /usr/lib/gcc/i686-pc-linux-gnu/4.9.2/libstdc++.so.6.0.20 /home/nick/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6
Let's try steam
libGL: screen 0 does not appear to be DRI3 capable
libGL: pci id for fd 7: 1002:68b8, driver r600
libGL: OpenDriver: trying /usr/lib/dri/tls/r600_dri.so
libGL: OpenDriver: trying /usr/lib/dri/r600_dri.so
It says not DRI3 capable but I thoguth it was but no biggie. No dialog about OpenGL. Getting excited... Launched TF2. No error straight away and it worked! I was back in Pyro land :-)
Update: I recently made the jump to 64 bit Gentoo and the link command is now different but otherwise it just worked again.
ln -s /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.6 /home/nick/.local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libstdc++.so.6
A second link is needed to make some games go (such as Outlast) I'm guessing these are 64 bit
ln -s /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.6 /home/nick/.local/share/Steam/ubuntu12_32/steam-runtime/amd64/usr/lib/x86_64-linux-gnu/libstdc++.so.6
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I was facing the same problem with matlab.. The same solution worked for my case. Thanks a lot!
A recent change has upset things again. I got:
libGL: Can't open configuration file /home/nick/.drirc: No such file or directory.
libGL: pci id for fd 7: 1002:6939, driver radeonsi
libGL: OpenDriver: trying /usr/lib32/dri/tls/radeonsi_dri.so
libGL: OpenDriver: trying /usr/lib32/dri/radeonsi_dri.so
libGL: Can't open configuration file /home/nick/.drirc: No such file or directory.
libGL: Can't open configuration file /home/nick/.drirc: No such file or directory.
libGL: Using DRI3 for screen 0
/home/nick/.local/share/Steam/ubuntu12_32/steam: symbol lookup error: /usr/lib32/libxcb-dri3.so.0: undefined symbol: xcb_send_request_with_fds
/home/nick/.local/share/Steam/steam.sh: line 444: no match: ssfn*
libcxb-dri3 is too new
rm .local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libxcb.so.1
ln -s /usr/lib/libxcb.so.1.1.0 .local/share/Steam/ubuntu12_32/steam-runtime/i386/usr/lib/i386-linux-gnu/libxcb.so.1
You might need to do this on the 64bit directories as well. I had to destroy my steam folder after a recent update so it hasn't updated to the 64bit version yet.
Wow things just keep moving and breaking :-)
So after clearing and reinstalling Steam, to get things going now (systemd-232 change libudev.so to .1 so this may not completely work)
export STEAM_RUNTIME=0
change your masks:
media-libs/openal abi_x86_32
gnome-base/gconf abi_x86_32
media-libs/libcanberra abi_x86_32
and add a new link for udev.so. This is probably asking for a world of hurt though so be warned.
sudo ln -s /usr/lib32/libudev.so.1.6.5 /usr/lib32/libudev.so.0
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