When I install Nvidia 331.113 drivers, my single-boot Macbook Pro 5,2 works perfectly but crashes after 1 to 2 minutes and has to be switched on again.
Graphics card: NVIDIA Corporation G96M [GeForce 9600M GT] (rev a1)
I have identified various bits of text in /var/log/syslog that may indicate what is causing these crashes:
Jul 30 09:33:43 i kernel: [ 4.255718] nvidia: module license ‘NVIDIA’ taints kernel.
Jul 30 09:33:43 i kernel: [ 4.255720] Disabling lock debugging due to kernel taint
Jul 30 09:33:43 i kernel: [ 4.283894] nvidia: module verification failed: signature and/or required key missing - tainting kernel
Jul 30 09:33:43 i kernel: [ 4.293191] ACPI: PCI Interrupt Link [LPMU] enabled at IRQ 20
Jul 30 09:33:43 i kernel: [ 4.293211] nvidia: probe of 0000:00:03.5 failed with error -1
Jul 30 09:33:44 i kernel: [ 6.321417] ACPI Warning: _SB_.PCI0.RP01.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20140424/nsarguments-95)
This earlier bit might mean something as well. It must have been generated just as Nvidia driver install was finishing, but before restart:
Jul 30 09:26:16 i nvidia-persistenced: Failed to query NVIDIA devices. Please ensure that the NVIDIA device files (/dev/nvidia*) exist, and that user 117 has read and write permissions for those files.
Jul 30 09:26:16 i nvidia-persistenced: The daemon no longer has permission to remove its runtime data directory /var/run/nvidia-persistenced
Jul 30 09:26:16 i nvidia-persistenced: Shutdown (17145)
Jul 30 09:26:16 i kernel: [ 1851.487956] init: nvidia-persistenced main process (17145) terminated with status 1
Without Nvidia drivers, I have serious problems with Googlemaps, playback of video files and resume from suspend.