(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x7f8282ac0f08]
(EE) 1: /usr/bin/X (QueuePointerEvents+0x52) [0x7f828298b042]
(EE) 2: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f8278362000+0x5fae) [0x7f8278367fae]
(EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f8278362000+0x6465) [0x7f8278368465]
(EE) 4: /usr/bin/X (0x7f8282920000+0x914b8) [0x7f82829b14b8]
(EE) 5: /usr/bin/X (0x7f8282920000+0xb93d0) [0x7f82829d93d0]
(EE) 6: /lib/x86_64-linux-gnu/libc.so.6 (0x7f8280aa0000+0x36d40) [0x7f8280ad6d40]
(EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7f8280b91337]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x34) [0x7f8281c54804]
(EE) 9: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmCommandWrite+0x1e) [0x7f8281c56e0e]
(EE) 10: /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 (nouveau_bo_wait+0x7c) [0x7f827c7dd39c]
(EE) 11: /usr/lib/xorg/modules/drivers/nouveau_drv.so (0x7f827c9e2000+0x7efb) [0x7f827c9e9efb]
(EE) 12: /usr/lib/xorg/modules/libexa.so (0x7f827c5c4000+0xabd0) [0x7f827c5cebd0]
(EE) 13: /usr/bin/X (0x7f8282920000+0x190d73) [0x7f8282ab0d73]
(EE) 14: /usr/bin/X (0x7f8282920000+0xddf45) [0x7f82829fdf45]
(EE) 15: /usr/bin/X (0x7f8282920000+0x122091) [0x7f8282a42091]
(EE) 16: /usr/bin/X (0x7f8282920000+0x5414e) [0x7f828297414e]
(EE) 17: /usr/bin/X (0x7f8282920000+0x57f9b) [0x7f8282977f9b]
(EE) 18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5) [0x7f8280ac1ec5]
(EE) 19: /usr/bin/X (0x7f8282920000+0x4352e) [0x7f828296352e]