Arch Linux

manuelschneid3r

Member

From: Germany

Registered: 2013-04-14

Posts: 152

udev rules for plugging and unplugging VGA

Hi,
I want to get run a comand if I am plugging or unplugging VGA cable.

SUBSYSTEM=="drm",ACTION=="add",RUN+="/usr/bin/touch /home/manuel/UDEV______A"
SUBSYSTEM=="drm",ACTION=="remove",RUN+="/usr/bin/touch /home/manuel/UDEV______R"
SUBSYSTEM=="drm",ACTION=="change",RUN+="/usr/bin/touch /home/manuel/UDEV______C"

UDEV______C is created, but why not UDEV______A, UDEV______R?

Regards

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Please feel free to correct my english.

Ovion

Member

Registered: 2013-02-24

Posts: 78

Re: udev rules for plugging and unplugging VGA

There is no add and remove concerning external screens/concerning the drm-subsystem. At least udev doesn't throw them, which is the same in this case. There's just change.

Mr.Elendig

#archlinux@freenode channel op

From: The intertubes

Registered: 2004-11-07

Posts: 4,094

Re: udev rules for plugging and unplugging VGA

Also detecting monitors over vga is _really_ unreliable anyway, so even if there was it might not work to your satisfaction.

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Evil #archlinux@libera.chat channel op and general support dude.
. files on github, Screenshots, Random pics and the rest

Ovion

Member

Registered: 2013-02-24

Posts: 78

Re: udev rules for plugging and unplugging VGA

Also detecting monitors over vga is _really_ unreliable anyway, so even if there was it might not work to your satisfaction.

This seems to be very true, unfortunately. I have a screenupdater relying on that and it could definitely do better.