robert@robert-T-1616:~$ steam
Running Steam on ubuntu 13.04 64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(1383158641_client)
Installing breakpad exception handler for appid(steam)/version(1383158641_client)
Installing breakpad exception handler for appid(steam)/version(1383158641_client)
unlinked 0 orphaned pipes
Installing breakpad exception handler for appid(steam)/version(1383158641_client)
[1122/124344:WARNING:proxy_service.cc(958)] PAC support disabled because there is no system implementation
Steam: An X Error occurred
X Error of failed request:  BadRequest (invalid request code or no such operation)
Major opcode of failed request:  153 (GLX)
Minor opcode of failed request:  19 (X_GLXQueryServerString)
Serial number of failed request:  34
xerror_handler: X failed, continuing
Steam: An X Error occurred
X Error of failed request:  BadRequest (invalid request code or no such operation)
Major opcode of failed request:  153 (GLX)
Minor opcode of failed request:  19 (X_GLXQueryServerString)
Serial number of failed request:  62
xerror_handler: X failed, continuing
Steam: An X Error occurred
X Error of failed request:  BadRequest (invalid request code or no such operation)
Major opcode of failed request:  153 (GLX)
Minor opcode of failed request:  14 (X_GLXGetVisualConfigs)
Serial number of failed request:  90
xerror_handler: X failed, continuing
glXChooseVisual failedAssert( Assertion Failed: Fatal Error: glXChooseVisual failed ):/home/buildbot/buildslave_steam/steam_rel_client_ubuntu12_linux/build/src/steamUI/Main.cpp:280

Installing breakpad exception handler for appid(steam)/version(1383158641_client)
Uploading dump (out-of-process) [proxy '']
/tmp/dumps/crash_20131122124344_6.dmp
^Crobert@robert-T-1616:~$