Re:AMD reckons it can win the high-end GPU battle
by dTal on Sunday February 02, 2020 @07:35PM
(#22220501)
Nouveau ought to turn the card off automatically, if loaded. It might not be able to do anything else, but it should at least do that.
NVidia on desktop "works" for me, but suspend/resume is a fiasco - one cycle and the graphics are never right again, flickering and crap everywhere.
Re:AMD reckons it can win the high-end GPU battle
by zepearl on Sunday February 02, 2020 @07:59PM
(#22220591)
> It might not be able to do anything else, but it should at least do that. LOL... :)
Thx - I never even took into consideration Nouveau.
Sorry, I have 0 experience with desktop & suspend (I have 2 desktops, both of them using nVidia, but they're basically servers running databases so I have never made them go to sleep).
Actually getting the nVidia GPU "really" switched off has often been a bit of a challenge.
Currently on a Lenovo P71 what I do is to have the nVidia-module not loaded (blacklisted or not even installed), load the "bbswitch" module and then execute "tee /proc/acpi/bbswitch <<<OFF" (and check with "cat /proc/acpi/bbswitch" if it returns "OFF"). Without doing this I noticed that the internal temperature when idle was a bit higher than what I thought it should be, so I must assume that otherwise the nVidia kind-of-GPU still consumes some watts even if the module is not even loaded/present.