What are you doing now?

brianL · 03-03-2010, 10:28 AM

Have successfully installed extra RAM in laptop.
(Using an anti-static wrist-strap "borrowed" some years ago from a previous employer.

)

MTK358 · 03-03-2010, 10:34 AM

Quote:

Originally Posted by GrapefruiTgirl

Do you have working transparency? (requires working composite)

I'm not using a compositing WM.

Quote:

Originally Posted by GrapefruiTgirl

Can you drag windows from one monitor to the other?

Yes. It's like the desktop spans both monitors, except windows are maximized to fill the monitor, not the whole desktop.

GrapefruiTgirl · 03-03-2010, 10:36 AM

@ MTK -- what if you open a console and type:

shell$ xcompmgr

does it work?

MTK358 · 03-03-2010, 10:37 AM

Code:

$ xcompmgr
bash: xcompmgr: command not found

adamk75 · 03-03-2010, 10:55 AM

Quote:

Originally Posted by MTK358

The only issue is that the WM and all my programs seem to think that the monitor on the right is the main one. For example, yakuake (a pop-down terminal) comes up on the wrong monitor!

What is the output of 'xdpyinfo -ext XINERAMA | grep head' ?

Adam

PS. TO find out if you have compositing working (as I'm sure you do), what's the output of 'xdpyinfo | grep -i COMPOSITE'?

MTK358 · 03-03-2010, 11:18 AM

Quote:

Originally Posted by adamk75

What is the output of 'xdpyinfo -ext XINERAMA | grep head' ?

Code:

$ xdpyinfo -ext XINERAMA | grep head
  head #0: 1280x1024 @ 1280,0
  head #1: 1280x1024 @ 0,0

That's wrong! Head 0 should be at 0,0.

But howcome the panel still sits on the "correct" monitor?

Quote:

Originally Posted by adamk75

TO find out if you have compositing working (as I'm sure you do), what's the output of 'xdpyinfo | grep -i COMPOSITE'?

Code:

$ xdpyinfo | grep -i COMPOSITE
    Composite

adamk75 · 03-03-2010, 11:22 AM

So xdpyinfo is showing that the primary head is the monitor on the right. You can change the primary head with the --primary flag to xrandr. If DVI-0 is currently acting as primary, but you want DVI-1 to be primary, you'd run 'xrandr --output DVI-1 --primary'. Not all window managers and applications honor the primary flag, but KDE4 should be aware. If you were to kill and restart yakuake after making that change, I believe it will run on the monitor you want it to use.

Adam

MTK358 · 03-03-2010, 11:29 AM

Quote:

Originally Posted by adamk75

So xdpyinfo is showing that the primary head is the monitor on the right. You can change the primary head with the --primary flag to xrandr. If DVI-0 is currently acting as primary, but you want DVI-1 to be primary, you'd run 'xrandr --output DVI-1 --primary'. Not all window managers and applications honor the primary flag, but KDE4 should be aware. If you were to kill and restart yakuake after making that change, I believe it will run on the monitor you want it to use.

Adam

I want DVI-0 to be the primary display.

I am using PekWM with xfce4-panel.

adamk75 · 03-03-2010, 11:32 AM

You'll need to run 'xrandr --output DVI-0 --primary' each time X starts, then, as there is, unfortunately, no way to configure this via xorg.conf. You can add that to your .xinitrc file, of course (assuming you're using startx/xinit) or to the script that launches your PekWM session. I do not know, however, if PekWM honors the primary flag.

Adam

MTK358 · 03-03-2010, 11:37 AM

Yes! I ran the command and now everything appears on the right monitor!

I will add that command to my .xinitrc.

GrapefruiTgirl · 03-03-2010, 12:00 PM

Okey dokey.. I'm about to fiddle with this a bit more, based on the info on this and the previous page in this thread. Before I do, another Q or two:

1) MTK358, you have just one video card involved here, whereas I have one-per-monitor. I wonder if that changes the prognosis for me..?

2) You use ATI stuff, while I'm using nVidia stuff.. Same Q as above -- I wonder if it will work the same way..

3) Aside from your relatively basic xorg.conf file you showed one page back is there anything else you have done, or do, when you start X? Like, are you using any particular `xrandr` command(s) aside from the one Adam just showed for fixing the Primary display situation?

Thanks a bunch

Sasha

adamk75 · 03-03-2010, 12:05 PM

Sasha,

I'm sorry to say, but the nvidia drivers do not support xrandr 1.2. You'll have to use xinerama for two monitors on two video card with the nvidia drivers.

EDIT: And, just for clarification for other people reading this thread.. At the present moment, xrandr does not support multiple monitors on multiple GPUs with any drivers, iirc (though I understand that this functionality is in the works). xrandr 1.2 only works on multiple monitors on single video cards.

GrapefruiTgirl · 03-03-2010, 12:07 PM

Blah.. Kinda thought so, in one way or another.

Thanks Adam.

GrapefruiTgirl · 03-03-2010, 12:10 PM

@ Adam -- any clue about the status of the nouveau driver, with "xinerama" and composite?

I went searching yesterday, including the nouveau wiki, but found little-to-nothing on the subject.

smeezekitty · 03-03-2010, 12:10 PM

Why not just use the VESA driver (except for multi-moniter situatuions).