Nvidia driver on Maxwell dGPU causes full system freeze and hang at shutdown
This is the exact same issue as shown on this thread on the Arch forums (I'm the second person commenting), the system will fully freeze after a few hours of usage and will only respond to SysReq's reboots, using the system for just a few minutes does not cause this behavior. If I happen to poweroff right before the freeze, the system will fail to shutdown and spout a few error messages that seem to start with "Unable to access opcode bytes [address]" and will only respond to the shutdown button.
There are a few more details on the Arch thread but the issue has been singled out to be with the proprietary driver, possibly only affecting Maxwell dGPUs (the oldest family of GPUs still supported by the driver), using the nouveau driver causes absolutely no problems, besides the performance downgrade.
Also, right before the full system freeze, dmesg will start giving error messages mostly related to:
[13907.454511] BUG: unable to handle page fault for address: 0000000000001587
[13907.454520] #PF: supervisor read access in kernel mode
[13907.454522] #PF: error_code(0x0000) - not-present page
The specific address may change.