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Tib05

Member

From: France

Registered: 2007-07-02

Posts: 31

[Workaround][XRandR, multihead setup] Rotate a Output freeze the other

Hello everyone,

I'm trying to add a second screen to my computer, and I'm having trouble doing so.

The first screen is running a 1920*1080 resolution.
I'm trying to get the second one below it. It's running at 1920*1200, and has to be inverted vertically.

As I'm using Gnome shell, I'm setting up everything with the displays settings window. Everything works till I use the button to rotate it by 180°.
It rotates the image on the second screen correctly, but then it either corrupts the image on the first screen, or freezes it. The mouse can still go over it, but the image won't react.

I tried using the xrandr command line instead of the gnome assistant, but I could observe same behavior.

It really look like a bug to me, I don't know how I could get around it, any ideas ?

For info, graphic card is ATI using the opensource radeon driver.

Thanks in advance

Last edited by Tib05 (2015-10-17 21:34:30)

nomorewindows

Member

Registered: 2010-04-03

Posts: 3,538

Re: [Workaround][XRandR, multihead setup] Rotate a Output freeze the other

xrandr -q
You may need to specify each output, just so it distiguishes which one you want rotated.  You may also be coordinate confused as to how to get to the other screen.  It may still be active.

---

I may have to CONSOLE you about your usage of ridiculously easy graphical interfaces...
Look ma, no mouse.

Tib05

Member

From: France

Registered: 2007-07-02

Posts: 31

Re: [Workaround][XRandR, multihead setup] Rotate a Output freeze the other

Yeah, I was using that, so the correct output would get rotated.
I actually just find an ugly workaround.
I used the "reflect" options instead of rotate. If I reflect around both xy axis, I get the correct result.

deadite66

Member

Registered: 2015-06-13

Posts: 33

Re: [Workaround][XRandR, multihead setup] Rotate a Output freeze the other

maybe the same same bug i've had with the latest radeon opensource drivers.

made a bug report : https://bugs.freedesktop.org/show_bug.cgi?id=92475