Hi, 

i have a server on Unraid and i use a gpu (GTX 1060) in a windows 10 VM but i would link turn off the gpu when is not used by my vm because the gpu consume 30W in idle...

 

for now i found this :

Quote

 sudo echo 1 > /sys/bus/pci/devices/0000:XX:XX.X/remove

 

it's turn off the card but i don't have the possibility to turn on the card...

 

Thanks for your help.

This would have to be a hardware feature of the card.  Plus, I doubt if any GPU card manufacturer ever dreamed of a situation where someone might actually want to turn off a video card!  There might be a sleep or hibernation function on the card but that again would be a function of the card firmware.

 

You might want to check on the Manufacturer's website or their user forum.

sudo echo 1 > /sys/bus/pci/rescan

This should force a complete bus scan and re-add the previously removed (disconnected) device.

 

Shouldn't cause any issues with already attached devices. I'm not around a *nix box at the moment otherwise I would try this, but I wonder if this would work:

sudo echo 1 > /sys/bus/pci/devices/0000:XX:XX.X/rescan

 

I'm really curious if this will actually reduce your power consumption

On 7/24/2020 at 6:12 PM, civic95man said:

sudo echo 1 > /sys/bus/pci/rescan

This should force a complete bus scan and re-add the previously removed (disconnected) device.

 

Shouldn't cause any issues with already attached devices. I'm not around a *nix box at the moment otherwise I would try this, but I wonder if this would work:

sudo echo 1 > /sys/bus/pci/devices/0000:XX:XX.X/rescan

 

I'm really curious if this will actually reduce your power consumption

 

It's this echo 1 > /sys/bus/pci/rescan

 

and no change in power consumption