udev action only for connecting VGA/HDMI cable but not for disconnecting

[Dirk Montgomery]

Hello all,

I have an AMD Radeon HD 6310 with free radeonhd drivers running. Xorg
version is 7.6, xserver is 1.10.3.

I tried to define a udev rule to change my monitor settings autoamtically
when I connect a VGA or an HDMI cable. Connecting works fine but
disconnecting is not recognized.

udevadm monitor shows:

udevadm monitor

monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[100.176249] change   /devices/pci0000:00/0000:00:01.0/drm/card0 (drm) 
UDEV  [100.869104] change   /devices/pci0000:00/0000:00:01.0/drm/card0 (drm) 

for connecting. For disconnecting nothing happens. Of course with this it is
not possible to define a rule to change resolution etc. when cable is
disconnected.

Is it simply not possible to detect disconntecting of a cable? Or is this a
bug? Every help related to this is appreciated.

Thank you very much!

Regards

Dirk
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