Monday, April 29, 2024
Homepage · nvidia-optimus
 Popular · Latest · Hot · Upcoming
10
rated 0 times [  10] [ 0]  / answers: 1 / hits: 6814  / 3 Years ago, mon, september 27, 2021, 9:02:02

I've got bumblebee 3.0 installed, I started chromium-browser with optirun and although I have closed chromium off, the card is still on. How can I know which process is using nvidia module that prevents the card from switching off?



root@magneto:/# cat /proc/acpi/bbswitch 

0000:01:00.0 ON

root@magneto:/# 

root@magneto:/# tee /proc/acpi/bbswitch <<<OFF

OFF

root@magneto:/# cat /proc/acpi/bbswitch 

0000:01:00.0 ON

root@magneto:/# dmesg |tail -1

[92040.608982] bbswitch: device 0000:01:00.0 is in use by driver 'nvidia', refusing OFF

root@magneto:/#

More From » nvidia-optimus
 Answers
6

I've noticed that Flash sometimes turns the card automatically on and then loads the driver. If the module is not used you can safely unload it after which you manually disable the card:



sudo rmmod nvidia

sudo tee /proc/acpi/bbswitch <<<OFF


If the driver cannot be unloaded, it will display:



ERROR: Module nvidia is in use


There is not much that you can do about that. A CUDA application of Xorg server is possible using it. You can check it with:



lsof -n -w -t /dev/nvidia*


It'll return a PID list unless you remove -t.


[#40056] Tuesday, September 28, 2021, 3 Years  [reply] [flag answer]
Only authorized users can answer the question. Please sign in first, or register a free account.
enefiama
Add To Favorites
Follow
Total Points: 43
Total Questions: 125
Total Answers: 102
Location: Gabon
Member since Sat, Jul 25, 2020
4 Years ago
enefiama questions
Sat, Jun 19, 21, 01:27, 3 Years ago
Wed, Aug 3, 22, 12:34, 2 Years ago
Mon, May 23, 22, 09:15, 2 Years ago
Mon, Aug 8, 22, 03:41, 2 Years ago
Sat, Nov 27, 21, 20:36, 2 Years ago
View All
;