Change screen resolution detection timeout

Question

I'm using a KVM switch for using two laptops. One is connected to Ubuntu 12.10. The problem I have, is that every time I switch to the other PC, Ubuntu changes the resolution back to the integral laptop monitor. When I switch back to work again with Ubuntu, I have to wait ~5 seconds until the screen resolution is detected again.

I figured out, the once I'm back on Ubuntu, if I open System Settings->Displays. it changes to the correct resolution instantly.

There's must be some sort of timeout that occurs that forces resolution change. Can i configure this timeout value somewhere ?

Updates: problem occurs also on Ubuntu 12.04, and on PC (not laptop)

Try: Open Displays (from unity), tick Mirror displys option — totti, Jan 22 '14 at 09:39
This has a suggestion for nvidia-cards with similar (though not the same) problem. Namely to save the EDID of the monitor and feed it directly to the driver instead of querying it from the monitor. I think maybe a similar trick would help in your case. But if you don't use the nvidia driver I don't know how to feed in the EDID info into the driver. (Getting the EDID info is not problem, xrandr --verbose prints it out, just feeding it back.) — falconer, Jan 23 '14 at 15:23

score 0 · Answer 1 · answered Jan 26 '14 at 21:19

0

Hard coding xorg.conf is the usual way to sort out these kinds of issues. Every time a screen change is being detected it is automatically reconfiguring the display settings on the fly.

answered Jan 26 '14 at 21:19

quaeritate

336

Change screen resolution detection timeout

1 Answers1