Dual Screen rotation question

c8a7w · n00b Joined: 06 Oct 2005 Posts: 62

I want to rotate 1 of my monitors.

my system is currently setup with twinview, meaning (as i understand it) the desktop is 1 large screen which allows for composite effects but I can't find how to rotate 1 of the displays.

I have got xorg.conf setup to allow me to rotate the display using Xinerama which allows seperating the monitors into 2 screens meaning i can rotate 1 of them, unfortunately this does not allow for composite effects.

the question is how can i do both? rotation and effects while keeping a single desktop screen (being able to drag windows back and forth between monitors)

can i do it? would it be possible with a 2nd video card or is it just not possible to have the both benefits under linux?

greatful for any suggestions even if its just a try looking here

erik258 · Posted: Fri Jul 31, 2009 10:47 pm Post subject:

have you played around with xrandr? I was playing with it, and although it doesn't seem to be well supported on this brand spanking new MSI Wind 120, I have noticed that xrandr -o left or xrandr -o right are probably going to do what you want, or maybe xrandr -y.

check it out, use xrandr --help, maybe man xrandr and who knows? You may be rewarded.
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c8a7w · n00b Joined: 06 Oct 2005 Posts: 62

xrandr is awesome, and is what i used when i plugin a monitor to my laptop but in this setup it wont work. running nvidia geforce 8400GS with the nvidia drivers and the xorg setup i have it can only see one screen (dispite having 2 monitors) so it would rotate the entire thing.

at least thats my understanding of it, i can boot into gentoo and post the output of xrandr -q if anyone thinks ive got it wrong (i'm not 100% sure).

erik258 · Posted: Mon Aug 03, 2009 2:51 pm Post subject:

So the 2 monitors are part of 1 X screen, using Xinerama?

Did you check out the xrandr --output switch? From the manpage, it looks like it's what you want:

c8a7w · n00b Joined: 06 Oct 2005 Posts: 62

no i am using twin view since as i understand it Xinerama would stop me from being able to use compiz-fusion. but it is only 1 screen.

xrandr -q output

erik258 · Posted: Mon Aug 03, 2009 10:43 pm Post subject:

Hi,

So you're using TwinView rather than Xinerama. The wikipedia page on xinerama explained to me that xrandr is slated to fully replace xinerama. I've been doing some research...

According to this:
http://http.download.nvidia.com/XFree86/Linux-x86/1.0-9629/README/appendix-u.html
The nvidia drivers do support xrandr (if enabled in xorg.conf, as described in the above link), but as it says towards the bottom,

c8a7w · n00b Joined: 06 Oct 2005 Posts: 62

thats fine, xrandr is really cool and i did use it on my laptop before.

the problem is i cant refernce the 2nd output.

ive tried booting up with a basic xorg config with xrandr enabled, but still didnt get a reference for a 2nd output.

i tried messing about with --output DVI-0 and DVI-1 but nothing seemed to happen.

i'm thinking this is going to get shelved for a while, work is pilling up and i dont really have the time to deal with this. windows7 will have to do untill next month.

erik258 · Posted: Wed Aug 05, 2009 12:10 am Post subject:

shelve what you must, but on dual head configurations I've used in the past I've had two Device sections in the xorg.conf file, one with