How to determine active GPU


Hi everyone,

we have some issues with NVidia graphic cards and trying to troubleshoot them. In this specific case a notebook has two graphic cards and one external monitor is attached. Is there a way to determine which graphic card is used (by which screen)?

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Thanks, Peter


Hi Peter,

“`lspci -vnnn | perl -lne ‘print if /^d+:.+([S+:S+])/’ | grep VGA“`

should give you the required output.


Thanks for the response. 🙂

When I run the command, I get two result lines for VGA. But it seems that it does not show me, which GPU is used. Or am I missing something?

“`00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108M [GeForce GT 620M] [10de:0de8] (rev a1) (prog-if 00 [VGA controller])“`


The first line should be the active one.

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