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I am trying to run this command: 

# rmmod nvidia

But I get:

ERROR: Module nvidia is in use

How can I know which process(es) is/are using the nvidia module?

Hennes
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719016
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  • See: http://stackoverflow.com/questions/448999/is-there-a-way-to-figure-out-what-is-using-a-linux-kernel-module – Alberto Solano Mar 04 '12 at 10:08
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    Got an answer here: http://askubuntu.com/questions/109681/which-process-is-using-nvidia-module/109868#109868 – 719016 Mar 17 '12 at 08:23

2 Answers2

8

There isn't a direct way that I know of to get the processes that are using a module.

You can try lsmod | grep <module name> to see all loaded kernel modules that are using a module.

You can also try dmesg | grep <module name> to see if the kernel logs have any clues as to which processes may be using a module.

You may be able to remove the module using rmmod --force <module_name>.

As for the nvidia module, you should be able to remove it if you shut down X11.

init 4
rmmod nvidia

worked for me.

Community
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Adam Prax
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0

For the nvidia module, this information can be retrieved by doing

$ sudo lsof /dev/nvidia*
[sudo] password for XXXXXXX: 
COMMAND     PID                USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
nvidia-pe 19360 nvidia-persistenced    2u   CHR 195,255      0t0  503 /dev/nvidiactl
nvidia-pe 19360 nvidia-persistenced    3u   CHR   195,0      0t0  504 /dev/nvidia0
nvidia-pe 19360 nvidia-persistenced    5u   CHR   195,0      0t0  504 /dev/nvidia0
nvidia-pe 19360 nvidia-persistenced    6u   CHR   195,0      0t0  504 /dev/nvidia0
nvidia-pe 19360 nvidia-persistenced    7u   CHR 195,254      0t0  513 /dev/nvidia-modeset
nvidia-pe 19360 nvidia-persistenced    8u   CHR   195,0      0t0  504 /dev/nvidia0
nvidia-pe 19360 nvidia-persistenced    9u   CHR   195,1      0t0  505 /dev/nvidia1
nvidia-pe 19360 nvidia-persistenced   10u   CHR   195,1      0t0  505 /dev/nvidia1
nvidia-pe 19360 nvidia-persistenced   11u   CHR   195,1      0t0  505 /dev/nvidia1
nvidia-pe 19360 nvidia-persistenced   12u   CHR 195,254      0t0  513 /dev/nvidia-modeset
nvidia-pe 19360 nvidia-persistenced   13u   CHR   195,1      0t0  505 /dev/nvidia1
Leo Fang
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