XID 56 when launching Steam VR w/ 450.56 Vulkan BETA

Logs from Journal when the system hangs:
Nvidia 1080
Arch
Nvidia 450.56 Vulkan Beta

Aug 12 20:54:17 Maxwell steam.desktop[2072]: Installing breakpad exception handler for appid(steam)/version(1596762082)
Aug 12 20:54:17 Maxwell kernel: NVRM: Xid (PCI:0000:0b:00): 56, pid=264, CMDre 00000002 00000080 00000000 00000005 0000000d
Aug 12 20:54:17 Maxwell kernel: nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000917e:1:0:959
Aug 12 20:54:17 Maxwell /usr/lib/gdm-x-session[986]: (II) event20 - Logitech MX Master 2S: SYN_DROPPED event - some input events have been lost.
Aug 12 20:54:15 Maxwell kernel: nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000987d:0:0:954
Aug 12 20:54:15 Maxwell systemd[970]: tracker-extract.service: Succeeded.
Aug 12 20:54:13 Maxwell kernel: NVRM: Xid (PCI:0000:0b:00): 56, pid=264, CMDre 00000002 00000080 00000000 00000005 0000000d
Aug 12 20:54:13 Maxwell kernel: nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000917e:1:0:959
Aug 12 20:54:11 Maxwell kernel: nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000987d:0:0:954
Aug 12 20:54:10 Maxwell systemd[1]: systemd-timedated.service: Succeeded.
Aug 12 20:54:10 Maxwell steam.desktop[2072]: Installing breakpad exception handler for appid(steam)/version(1596762082)
Aug 12 20:54:09 Maxwell kernel: NVRM: Xid (PCI:0000:0b:00): 56, pid=264, CMDre 00000002 00000080 00000000 00000005 0000000d
Aug 12 20:54:09 Maxwell /usr/lib/gdm-x-session[986]: (II) event20 - Logitech MX Master 2S: SYN_DROPPED event - some input events have been lost.
Aug 12 20:54:09 Maxwell kernel: nvidia-modeset: WARNING: GPU:0: Lost display notification (0:0x00000000); continuing.

nvidia-bug-report.log.gz (352.3 KB)