Debian 8.1 Xorg crash with Quadro K420 and NVIDIA driver 352.30

The card is a Quadro K420, there is no other card in the system:

[ 45.757] (II) NVIDIA(0): NVIDIA GPU Quadro K420 (GK107GL) at PCI:15:0:0 (GPU-0)
[ 45.757] (–) NVIDIA(0): Memory: 1048576 kBytes
[ 45.758] (–) NVIDIA(0): VideoBIOS: 80.07.e3.00.02

A popup appeared in X. I clicked to open a menu at the bottom of the popup and X crashed. The popup in question is the Mozilla Lightning plugin reminders window.

[672150.184] (EE)
[672150.184] (EE) Backtrace:
[672150.221] (EE) 0: /usr/bin/Xorg (xorg_backtrace+0x56) [0x7f855b243d46]
[672150.221] (EE) 1: /usr/bin/Xorg (0x7f855b08d000+0x1baf29) [0x7f855b247f29]
[672150.221] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f8558d81000+0x35180) [0x7f8558db6180]
[672150.221] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7f8558d81000+0x1352e4) [0x7f8558eb62e4]
[672150.221] (EE) 4: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f85532c2000+0xc60c3) [0x7f85533880c3]
[672150.221] (EE) 5: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f85532c2000+0x57f657) [0x7f8553841657]
[672150.221] (EE) 6: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f85532c2000+0x57ffc5) [0x7f8553841fc5]
[672150.221] (EE) 7: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f85532c2000+0x58db98) [0x7f855384fb98]
[672150.221] (EE) 8: /usr/bin/Xorg (0x7f855b08d000+0x14026d) [0x7f855b1cd26d]
[672150.221] (EE) 9: /usr/bin/Xorg (0x7f855b08d000+0xe8735) [0x7f855b175735]
[672150.221] (EE) 10: /usr/bin/Xorg (0x7f855b08d000+0xe9555) [0x7f855b176555]
[672150.221] (EE) 11: /usr/bin/Xorg (0x7f855b08d000+0xe802d) [0x7f855b17502d]
[672150.221] (EE) 12: /usr/bin/Xorg (0x7f855b08d000+0x80e36) [0x7f855b10de36]
[672150.221] (EE) 13: /usr/bin/Xorg (MapWindow+0x117) [0x7f855b110c87]
[672150.221] (EE) 14: /usr/bin/Xorg (0x7f855b08d000+0x51b85) [0x7f855b0deb85]
[672150.221] (EE) 15: /usr/bin/Xorg (0x7f855b08d000+0x573f7) [0x7f855b0e43f7]
[672150.221] (EE) 16: /usr/bin/Xorg (0x7f855b08d000+0x5b596) [0x7f855b0e8596]
[672150.221] (EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7f8558da2b45]
[672150.221] (EE) 18: /usr/bin/Xorg (0x7f855b08d000+0x4590e) [0x7f855b0d290e]
[672150.221] (EE)
[672150.221] (EE) Segmentation fault at address 0x7f84369f26a0
[672150.221] (EE)
Fatal server error:
[672150.221] (EE) Caught signal 11 (Segmentation fault). Server aborting
[672150.221] (EE)
[672150.221] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[672150.221] (EE) Please also check the log file at “/var/log/Xorg.0.log” for additional information.
[672150.221] (EE)
[672150.675] (EE) Server terminated with error (1). Closing log file.

I sent an email with the nvidia-bug-report output for my system on 17 July, after the previous crashes with Quadro FX 1800.

Since then, I have changed three things in early August:

Driver version upgraded from 340.76 to 352.30
Video card upgraded from Quadro FX 1800 to Quadro K420
Monitor upgraded from 1920 x 1200 to a 4k monitor, 3840 x 2160 resolution

and I haven’t seen it crash again until today.

I’ve seen this crash again a couple of times, here is another example:

[3801456.796] (EE)
[3801456.796] (EE) Backtrace:
[3801456.892] (EE) 0: /usr/bin/Xorg (xorg_backtrace+0x56) [0x7f8e5aea8d46]
[3801456.892] (EE) 1: /usr/bin/Xorg (0x7f8e5acf2000+0x1baf29) [0x7f8e5aeacf29]
[3801456.892] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f8e589e6000+0x35180) [0x7f8e58a1b180]
[3801456.892] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7f8e589e6000+0x1352e4) [0x7f8e58b1b2e4]
[3801456.892] (EE) 4: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f8e52ecf000+0xc8be3) [0x7f8e52f97be3]
[3801456.892] (EE) 5: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f8e52ecf000+0x582487) [0x7f8e53451487]
[3801456.892] (EE) 6: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f8e52ecf000+0x582df5) [0x7f8e53451df5]
[3801456.892] (EE) 7: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f8e52ecf000+0x5909d8) [0x7f8e5345f9d8]
[3801456.892] (EE) 8: /usr/bin/Xorg (0x7f8e5acf2000+0x14026d) [0x7f8e5ae3226d]
[3801456.892] (EE) 9: /usr/bin/Xorg (0x7f8e5acf2000+0xe8735) [0x7f8e5adda735]
[3801456.892] (EE) 10: /usr/bin/Xorg (0x7f8e5acf2000+0xe9555) [0x7f8e5addb555]
[3801456.892] (EE) 11: /usr/bin/Xorg (0x7f8e5acf2000+0xe802d) [0x7f8e5adda02d]
[3801456.892] (EE) 12: /usr/bin/Xorg (0x7f8e5acf2000+0x80e36) [0x7f8e5ad72e36]
[3801456.892] (EE) 13: /usr/bin/Xorg (MapWindow+0x117) [0x7f8e5ad75c87]
[3801456.892] (EE) 14: /usr/bin/Xorg (0x7f8e5acf2000+0x51b85) [0x7f8e5ad43b85]
[3801456.892] (EE) 15: /usr/bin/Xorg (0x7f8e5acf2000+0x573f7) [0x7f8e5ad493f7]
[3801456.892] (EE) 16: /usr/bin/Xorg (0x7f8e5acf2000+0x5b596) [0x7f8e5ad4d596]
[3801456.892] (EE) 17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7f8e58a07b45]
[3801456.892] (EE) 18: /usr/bin/Xorg (0x7f8e5acf2000+0x4590e) [0x7f8e5ad3790e]
[3801456.892] (EE)
[3801456.892] (EE) Segmentation fault at address 0x7f8d3be5b6a0
[3801456.892] (EE)
Fatal server error:
[3801456.892] (EE) Caught signal 11 (Segmentation fault). Server aborting
[3801456.892] (EE)
[3801456.892] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[3801456.892] (EE) Please also check the log file at “/var/log/Xorg.5.log” for additional information.
[3801456.892] (EE)
[3801457.463] (EE) Server terminated with error (1). Closing log file.

nvidia-bug-report.sh output has been sent by email today, 2015-10-21