On further investigation, this is happening when changing down resolution. Changing up is fine (other than compiz not re-adjusting, but that is for another bug report). Changing down causes Xorg to crash. I got a backtrace from gdm of the crash:
Program received signal SIGABRT, Aborted. [Switching to Thread 0xb7a816b0 (LWP 7909)] 0xb7f2b430 in __kernel_vsyscall () (gdb) bt #0 0xb7f2b430 in __kernel_vsyscall () #1 0xb7b3a880 in raise () from /lib/tls/i686/cmov/libc.so.6 #2 0xb7b3c248 in abort () from /lib/tls/i686/cmov/libc.so.6 #3 0xb7b3372e in __assert_fail () from /lib/tls/i686/cmov/libc.so.6 #4 0xa74e242e in UNLOCK_HARDWARE () from /usr/lib/dri/i965_dri.so #5 0xa74dee5b in intelCopyBuffer () from /usr/lib/dri/i965_dri.so #6 0xa74e1487 in intelCopySubBuffer () from /usr/lib/dri/i965_dri.so #7 0xa74d75e7 in ?? () from /usr/lib/dri/i965_dri.so #8 0xb7a4da84 in __glXDRIdrawableCopySubBuffer (basePrivate=0x68, x=0, y=748, w=104, h=52) at ../../glx/glxdri.c:287 #9 0xb7a4001a in __glXDisp_CopySubBufferMESA (cl=0x8ce2c94, pc=<value optimized out>) at ../../glx/glxcmds.c:1632 #10 0xb7a3f0a7 in __glXDisp_VendorPrivate (cl=0x8ce2c94, pc=0x931f530 "\235\020\b") at ../../glx/glxcmds.c:2256 #11 0xb7a43c0a in __glXDispatch (client=0x8ce89c0) at ../../glx/glxext.c:512 #12 0x0808c89f in Dispatch () at ../../dix/dispatch.c:454 #13 0x08071d1d in main (argc=10, argv=0xbff2d4d4, envp=Cannot access memory at address 0x1eed ) at ../../dix/main.c:441 ** Summary changed: - X sometimes crashes after hitting apply in screen resolution applet (Intrepid) + X crashes when changing down resolution (Intrepid) -- X crashes when changing down resolution (Intrepid) https://bugs.launchpad.net/bugs/279568 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
