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[igorsh <ishipenkov@xxxxxxxxx>]

same problem on my notebook with VX800: xorg crashes when I move or maximize or drag window with video in any player with Xv output. Xorg with openchrome from svn trunk crashes too.
Apport can't collect information about crash and I can't attach gdb to Xorg process: it attaches when I start gdb on tty1, but when I switch back to Xorg system freezes and I must reboot it with Alt+SysRQ+B
In Xorg.0.log only that lines have connection to crash:

[   779.173] 
Backtrace:
[   779.174] 0: /usr/bin/X (xorg_backtrace+0x26) [0x4a2626]
[   779.174] 1: /usr/bin/X (0x400000+0x6219a) [0x46219a]
[   779.174] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f354d27e000+0xfc60) [0x7f354d28dc60]
[   779.174] 3: /usr/lib/libpixman-1.so.0 (pixman_region_equal+0x0) [0x7f354d0229f0]
[   779.174] 4: /usr/lib/xorg/modules/drivers/openchrome_drv.so (0x7f354a3bd000+0x26ec0) [0x7f354a3e3ec0]
[   779.174] 5: /usr/bin/X (0x400000+0x136b97) [0x536b97]
[   779.174] 6: /usr/bin/X (0x400000+0x1374ed) [0x5374ed]
[   779.174] 7: /usr/bin/X (miHandleValidateExposures+0x68) [0x5679c8]
[   779.174] 8: /usr/bin/X (miMoveWindow+0x20f) [0x567c5f]
[   779.174] 9: /usr/bin/X (0x400000+0xa7421) [0x4a7421]
[   779.174] 10: /usr/bin/X (ConfigureWindow+0x51e) [0x454dde]
[   779.174] 11: /usr/bin/X (0x400000+0x28b7b) [0x428b7b]
[   779.175] 12: /usr/bin/X (0x400000+0x2e2a9) [0x42e2a9]
[   779.175] 13: /usr/bin/X (0x400000+0x21a7e) [0x421a7e]
[   779.175] 14: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) [0x7f354c1c7eff]
[   779.175] 15: /usr/bin/X (0x400000+0x21629) [0x421629]
[   779.175] Segmentation fault at address 0x247
[   779.175] 
Caught signal 11 (Segmentation fault). Server aborting

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https://bugs.launchpad.net/bugs/748147

Title:
  Xorg crash