https://bugs.documentfoundation.org/show_bug.cgi?id=96200

--- Comment #3 from [email protected] ---
Well, getting a backtrace is tricky.

If everything is run on the same machine (X server and LO), the X server crash
prevents getting any kind of trace (LO/gdb killed instantly).

So I ran LO on a (single-headed) system with remote display on the multi-head
system. Got a crash, but the gdbtrace does not seem very useful (see above).

What I get are messages in the X server log :

With a remote session :

[ 77499.917] (EE) Backtrace:
[ 77500.053] (EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x58f646]
[ 77500.053] (EE) 1: /usr/bin/X (0x400000+0x1936b9) [0x5936b9]
[ 77500.053] (EE) 2: /lib64/libc.so.6 (0x7efccbffe000+0x33230) [0x7efccc031230]
[ 77500.053] (EE) 3: /usr/lib64/xorg/modules/drivers/nvidia_drv.so
(0x7efcc793e000+0xc4263) [0x7efcc7a02263]
[ 77500.053] (EE) 4: /usr/lib64/xorg/modules/drivers/nvidia_drv.so
(0x7efcc793e000+0x58dfb6) [0x7efcc7ecbfb6]
[ 77500.053] (EE) 
[ 77500.054] (EE) Floating point exception at address 0x7efcc7a02263

Or, with a local session :
[ 79855.401] (EE) Backtrace:
[ 79855.401] (EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x58f646]
[ 79855.401] (EE) 1: /usr/bin/X (0x400000+0x1936b9) [0x5936b9]
[ 79855.401] (EE) 2: /lib64/libc.so.6 (0x7fbdb620b000+0x33230) [0x7fbdb623e230]
[ 79855.401] (EE) 3: /usr/bin/X (xf86Wakeup+0x123) [0x475fa3]
[ 79855.401] (EE) 4: /usr/bin/X (WakeupHandler+0x6b) [0x43bc5b]
[ 79855.401] (EE) 5: /usr/bin/X (WaitForSomething+0x1c3) [0x58cc83]
[ 79855.401] (EE) 6: /usr/bin/X (0x400000+0x36e11) [0x436e11]
[ 79855.401] (EE) 7: /usr/bin/X (0x400000+0x3b116) [0x43b116]
[ 79855.402] (EE) 8: /lib64/libc.so.6 (__libc_start_main+0xf5) [0x7fbdb622b855]
[ 79855.402] (EE) 9: /usr/bin/X (_start+0x29) [0x425629]
[ 79855.402] (EE) 
[ 79855.402] (EE) Segmentation fault at address 0x38

There may be  have some weird interaction between LO and Nvidia.

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