(EE) NVIDIA(0): Failed to map registers.
(EE) NVIDIA(0): Failed to map cursor control registers for CRTC 0
(EE) NVIDIA(0): Failed to map registers.
(EE) NVIDIA(0): Failed to map cursor control registers for CRTC 0
(EE) NVIDIA(0): Error recovery failed.
(EE) NVIDIA(0):  *** Aborting ***
(EE) NVIDIA(0): Failed to map registers.
(EE) NVIDIA(0): Failed to map cursor control registers for CRTC 0
(EE) NVIDIA(0): Error recovery failed.
(EE) NVIDIA(0):  *** Aborting ***
(EE) NVIDIA(0): Failed to map registers.
(EE) NVIDIA(0): Failed to map cursor control registers for CRTC 0
(EE) NVIDIA(0): Error recovery failed.
(EE) NVIDIA(0):  *** Aborting ***

Backtrace:
0: /usr/X11/bin/amd64/Xorg'xf86SigHandler+0x84 [0x4e1b64]
1: /lib/amd64/libc.so.1'__sighndlr+0x6 [0xfffffd7fff15dc96]
2: /lib/amd64/libc.so.1'call_user_handler+0x2f8 [0xfffffd7fff1524c8]
3: /usr/X11/lib/modules/drivers/amd64/nvidia_drv.so'0x443df [0xfffffd7ffb4443df]
4: /usr/X11/bin/amd64/Xorg'xf86SetCursor+0x17f [0x51bb6f]
5: /usr/X11/bin/amd64/Xorg'xf86CursorSetCursor+0x1a1 [0x51b441]
6: /usr/X11/bin/amd64/Xorg'xf86CursorEnableDisableFBAccess+0xa0 [0x51b5e0]
7: /usr/X11/bin/amd64/Xorg'xf86RandRSetMode+0x186 [0x5016d6]
8: /usr/X11/bin/amd64/Xorg'xf86RandRSetConfig+0x196 [0x5018c6]
9: /usr/X11/bin/amd64/Xorg'RRCrtcSet+0xe6 [0x58d456]
10: /usr/X11/bin/amd64/Xorg'ProcRRSetScreenConfig+0x3be [0x59366e]
11: /usr/X11/bin/amd64/Xorg'Dispatch+0x4c2 [0x48ab92]
12: /usr/X11/bin/amd64/Xorg'main+0x495 [0x49df15]
13: /usr/X11/bin/amd64/Xorg'_start+0x6c [0x47a21c]