Hrm, unfortunately it looks like the apport retracer is choking, so the interpreted backtrace isn't valid.
However, poking around through the X logs, I notice it prints out a bunch of this:
[ 40.000] (II) Dell WMI hotkeys: Device reopened after 1 attempts. [ 45.264] (II) AIGLX: Suspending AIGLX clients for VT switch [ 62.004] (WW) intel(0): intel_uxa_prepare_access: bo map failed: Cannot allocate memory [ 62.005] (WW) intel(0): intel_uxa_prepare_access: bo map failed: Cannot allocate memory [ 62.005] (WW) intel(0): intel_uxa_prepare_access: bo map failed: Cannot allocate memory ... repeating ... [ 62.616] (WW) intel(0): intel_uxa_prepare_access: bo map failed: Cannot allocate memory [ 62.616] (WW) intel(0): intel_uxa_prepare_access: bo map failed: Cannot allocate memory [ 62.617] (WW) intel(0): intel_uxa_prepare_access: bo map failed: Cannot allocate memory [ 62.617] Backtrace: [ 62.617] 0: X (xorg_backtrace+0x3b) [0x80e83bb] [ 62.617] 1: X (0x8048000+0x5d4f8) [0x80a54f8] [ 62.617] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0x6e240c] [ 62.617] 3: /usr/lib/xorg/modules/libfb.so (0x7e5000+0x16ff0) [0x7fbff0] [ 62.617] 4: /usr/lib/xorg/modules/libfb.so (fbComposite+0x121) [0x7fc241] [ 62.617] 5: /usr/lib/xorg/modules/drivers/intel_drv.so (0x240000+0x2fc66) [0x26fc66] [ 62.617] 6: /usr/lib/xorg/modules/drivers/intel_drv.so (0x240000+0x2c4a0) [0x26c4a0] [ 62.617] 7: X (0x8048000+0xdb0f2) [0x81230f2] [ 62.617] 8: X (CompositePicture+0x22b) [0x811822b] [ 62.617] 9: X (0x8048000+0xd3d39) [0x811bd39] [ 62.617] 10: X (0x8048000+0xd0a33) [0x8118a33] [ 62.617] 11: X (0x8048000+0x276c7) [0x806f6c7] [ 62.617] 12: X (0x8048000+0x1a64c) [0x806264c] [ 62.617] 13: /lib/libc.so.6 (__libc_start_main+0xe6) [0xd0fce6] [ 62.617] 14: X (0x8048000+0x1a241) [0x8062241] [ 62.617] Segmentation fault at address 0x20
Hrm, unfortunately it looks like the apport retracer is choking, so the interpreted backtrace isn't valid.
However, poking around through the X logs, I notice it prints out a bunch of this:
[ 40.000] (II) Dell WMI hotkeys: Device reopened after 1 attempts. prepare_ access: bo map failed: Cannot allocate memory prepare_ access: bo map failed: Cannot allocate memory prepare_ access: bo map failed: Cannot allocate memory prepare_ access: bo map failed: Cannot allocate memory prepare_ access: bo map failed: Cannot allocate memory prepare_ access: bo map failed: Cannot allocate memory +0x3b) [0x80e83bb] rt_sigreturn+ 0x0) [0x6e240c] xorg/modules/ libfb.so (0x7e5000+0x16ff0) [0x7fbff0] xorg/modules/ libfb.so (fbComposite+0x121) [0x7fc241] xorg/modules/ drivers/ intel_drv. so (0x240000+0x2fc66) [0x26fc66] xorg/modules/ drivers/ intel_drv. so (0x240000+0x2c4a0) [0x26c4a0] re+0x22b) [0x811822b] start_main+ 0xe6) [0xd0fce6]
[ 45.264] (II) AIGLX: Suspending AIGLX clients for VT switch
[ 62.004] (WW) intel(0): intel_uxa_
[ 62.005] (WW) intel(0): intel_uxa_
[ 62.005] (WW) intel(0): intel_uxa_
... repeating ...
[ 62.616] (WW) intel(0): intel_uxa_
[ 62.616] (WW) intel(0): intel_uxa_
[ 62.617] (WW) intel(0): intel_uxa_
[ 62.617]
Backtrace:
[ 62.617] 0: X (xorg_backtrace
[ 62.617] 1: X (0x8048000+0x5d4f8) [0x80a54f8]
[ 62.617] 2: (vdso) (__kernel_
[ 62.617] 3: /usr/lib/
[ 62.617] 4: /usr/lib/
[ 62.617] 5: /usr/lib/
[ 62.617] 6: /usr/lib/
[ 62.617] 7: X (0x8048000+0xdb0f2) [0x81230f2]
[ 62.617] 8: X (CompositePictu
[ 62.617] 9: X (0x8048000+0xd3d39) [0x811bd39]
[ 62.617] 10: X (0x8048000+0xd0a33) [0x8118a33]
[ 62.617] 11: X (0x8048000+0x276c7) [0x806f6c7]
[ 62.617] 12: X (0x8048000+0x1a64c) [0x806264c]
[ 62.617] 13: /lib/libc.so.6 (__libc_
[ 62.617] 14: X (0x8048000+0x1a241) [0x8062241]
[ 62.617] Segmentation fault at address 0x20