Arch Linux

dragonreborn

Member

Registered: 2014-08-11

Posts: 10

No event in Udev upon connecting a DVI-HDMI display

Hi all!

Im pretty new to Archlinux and sarted "linuxing" generally not so long ago.
Arch is my latest stop and love-for-first-sight, learned a lot from its wiki and forum.

I tried to cook (honestly more like copy) a script today to let KDE (xrandr) automatically configure my TV, which is connected with a DVI-HDMI cabel through a HDMI switch.

As per instructions i tried to check out its proper name with

udevadm monitor

but there r absolutely no events in it.
Im guessing thats why my script isnt invoked upon connecting/disconnecting.

Also, even if i connect/disconnect TV, KDE generally does not get it untill i let Display Settings run or

xrandr

from terminal.
That means if i disconnect, then reconnect, my settings r still the same. If i run any of them in the while, or boot up Linux so that my TV is turned off, i loose my settings.
Is that normal?
What can i do that i can get udev events?

Thanks a lot for your help guys in advance!

EDIT:

Two more things

Disconnecting my primary monitor shos nothing as well at udevadm monitor.
Interestingly DVI-0 is my TV with DVI-HDMI connection
HDMI-0 is my primary monitor with DVI-DVI connection.
Kinda weird.....

Last edited by dragonreborn (2014-08-11 21:50:18)

falconindy

Developer

From: New York, USA

Registered: 2009-10-22

Posts: 4,111

Website

Re: No event in Udev upon connecting a DVI-HDMI display

What can i do that i can get udev events?

Fix the driver in the kernel to broadcast uevents on HPD handling.

Last edited by falconindy (2014-08-11 22:00:31)

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blog | ±github

dragonreborn

Member

Registered: 2014-08-11

Posts: 10

Re: No event in Udev upon connecting a DVI-HDMI display

Tried to google your answer how to do that, but no luck.
Can you give me some directions pls?
Have an ATI Radeon HD4850.
As the HD 4 series arent supported by ATI anymore, i have installed the x86-video-ati package. That should support my card right?

dragonreborn

Member

Registered: 2014-08-11

Posts: 10

Re: No event in Udev upon connecting a DVI-HDMI display

Tried to crawl through wiki one more time, still cant make out what can be the cause of the problem.
I would like to avoid an X reinstall if its possible, made some modifications (nothing that could cause/affect this problem imo).
Any insight?

Thanks in advance.

dragonreborn

Member

Registered: 2014-08-11

Posts: 10

Re: No event in Udev upon connecting a DVI-HDMI display

Tried a full reinstall,  didn't help, problem is still the same.
I'm totally clueless