For any users who are finding that Source based games such as CSGO, Gmod and others won’t start on Debian 12 or newer versions of Ubuntu, find
bin/libgcc_s.so.1 in your instances data under the
srcds directory and rename it to
libgcc_s.so.1.old - the server should then start as normal.
This is caused by the game shipping with a version of libgcc that isn’t compatible with these distributions. By renaming it, the server will instead use the version installed as part of your OS, which will allow it to work again.