even with disabled desktop effects (extended desktop mode) pretty random
crash:
(II) XKB: reuse xkmfile
/var/lib/xkb/server-396BC46DFAA812E9D898F4577B66AF8390BA1F07.xkm
(II) XKB: reuse xkmfile
/var/lib/xkb/server-396BC46DFAA812E9D898F4577B66AF8390BA1F07.xkm
(II) XKB: reuse xkmfile
/var/lib/xkb/server-396BC46DFAA812E9D898F4577B66AF8390BA1F07.xkm
Backtrace:
0: /usr/bin/X (xorg_backtrace+0x3b) [0x80e937b]
1: /usr/bin/X (0x8048000+0x61c7d) [0x80a9c7d]
2: (vdso) (__kernel_rt_sigreturn+0x0) [0xced410]
3: /usr/lib/dri/i915_dri.so (0xff6000+0x20a486) [0x1200486]
4: /usr/lib/dri/i915_dri.so (_mesa_execute_program+0x2a2d) [0x113d18d]
5: /usr/lib/dri/i915_dri.so (_swrast_exec_fragment_program+0x1a4) [0x1200724]
6: /usr/lib/dri/i915_dri.so (0xff6000+0x16640f) [0x115c40f]
7: /usr/lib/dri/i915_dri.so (_swrast_write_rgba_span+0x10b0) [0x115dba0]
8: /usr/lib/dri/i915_dri.so (0xff6000+0x1805d2) [0x11765d2]
9: /usr/lib/dri/i915_dri.so (0xff6000+0x159e5f) [0x114fe5f]
10: /usr/lib/dri/i915_dri.so (_swrast_Triangle+0x2d) [0x114f05d]
11: /usr/lib/dri/i915_dri.so (0xff6000+0x18cdaf) [0x1182daf]
12: /usr/lib/dri/i915_dri.so (0xff6000+0x18cdf5) [0x1182df5]
13: /usr/lib/dri/i915_dri.so (0xff6000+0x125377) [0x111b377]
14: /usr/lib/dri/i915_dri.so (0xff6000+0x1269c9) [0x111c9c9]
15: /usr/lib/dri/i915_dri.so (_tnl_run_pipeline+0x163) [0x11106b3]
16: /usr/lib/dri/i915_dri.so (0xff6000+0x719fd) [0x10679fd]
17: /usr/lib/dri/i915_dri.so (_tnl_draw_prims+0xc76) [0x1111406]
18: /usr/lib/dri/i915_dri.so (_tnl_vbo_draw_prims+0x79) [0x1111869]
19: /usr/lib/dri/i915_dri.so (vbo_exec_vtx_flush+0x5f4) [0x1109884]
20: /usr/lib/dri/i915_dri.so (vbo_exec_FlushVertices_internal+0x97) [0x11056a7]
21: /usr/lib/dri/i915_dri.so (vbo_exec_FlushVertices+0x50) [0x1105700]
22: /usr/lib/dri/i915_dri.so (_mesa_MatrixMode+0xdf) [0x10ca1ef]
23: /usr/lib/xorg/modules/extensions/libglx.so (0x5ab000+0x8d09) [0x5b3d09]
24: /usr/lib/xorg/modules/extensions/libglx.so (0x5ab000+0x32324) [0x5dd324]
25: /usr/lib/xorg/modules/extensions/libglx.so (0x5ab000+0x36c22) [0x5e1c22]
26: /usr/bin/X (0x8048000+0x2a477) [0x8072477]
27: /usr/bin/X (0x8048000+0x1ed7a) [0x8066d7a]
28: /lib/tls/i686/cmov/libc.so.6 (__libc_start_main+0xe6) [0x32ebd6]
29: /usr/bin/X (0x8048000+0x1e961) [0x8066961]
Segmentation fault at address (nil)
Caught signal 11 (Segmentation fault). Server aborting
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional
information.
(II) Video Bus: Close
(II) UnloadModule: "evdev"
--
X Crashes when enabling second monitor
https://bugs.launchpad.net/bugs/559039
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