https://bugs.freedesktop.org/show_bug.cgi?id=70388 --- Comment #13 from Rostislav Krasny --- (In reply to comment #12) After several backtraces like in the previous comment there is the following one: (EE) [mi] Increasing EQ size to 1024 to prevent dropped events. [mi] EQ processing has resumed after 433 dropped events. [mi] This may be caused my a misbehaving driver monopolizing the server's resources. (II) AIGLX: Suspending AIGLX clients for VT switch (EE) (EE) Backtrace: (EE) 0: /usr/bin/X (OsLookupColor+0x136) [0x80b6a56] (EE) 1: ? (?+0x136) [0xb77bd541] (EE) 2: /lib/libc.so.6 (__GI_memcpy+0x46) [0xb72e34a6] (EE) 3: ? (?+0x46) [0x9e76e3e] (EE) (EE) Segmentation fault at address 0x0 (EE) Fatal server error: (EE) Caught signal 11 (Segmentation fault). Server aborting (EE) (EE) Please consult the Fedora Project support at http://wiki.x.org for help. (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. (EE) (EE) Server terminated with error (1). Closing log file. -- You are receiving this mail because: You are the assignee for the bug.