mount&blade crash

Steam: An X Error occurred
X Error of failed request:  GLXBadCurrentWindow
Major opcode of failed request:  156
Serial number of failed request:  68977
xerror_handler: X failed, continuing
[xcb] Too much data requested from _XRead
[xcb] This is most likely caused by a broken X extension library
[xcb] Aborting, sorry about that.
steam: ../../src/xcb_io.c:736: _XRead: Warunek zapewnienia `!xcb_xlib_too_much_data_requested' nie został spełniony.
[2014-12-07 16:51:07] Startup - updater built Nov 21 2014 16:23:41
[2014-12-07 16:51:07] Verifying installation...
[2014-12-07 16:51:07] Verification complete
Uploading dump (out-of-process) [proxy '']
/tmp/dumps/assert_20141207165107_1.dmp
/home/anticitizen/.local/share/Steam/steam.sh: linia 729:  1326 Przerwane               (zrzut pamięci) $STEAM_DEBUGGER "$STEAMROOT/$STEAMEXEPATH" "$@"
Requested Force create but SharedObjectMutex already created
Forced create but already created for SharedObjectEvent
Forced create but already created for SharedObjectEvent
Finished uploading minidump (out-of-process): success = yes
response: CrashID=bp-826563d7-f020-4394-abd7-cc43a2141207