Bug 169887

Summary: Separate X screen with nvidia not working properly in KDE 4.1
Product: [Unmaintained] plasma4 Reporter: Mikael Jansson <mikaeljans>
Component: multiheadAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: normal CC: aseigo, p.stolz, stefan.kli
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Mikael Jansson 2008-08-26 21:59:08 UTC
Version:            (using KDE 4.1.0)
OS:                Linux
Installed from:    Ubuntu Packages

When separate X screens setting are enabled with nvidia gpu and the screens are of different formats (4:3 and 16:9) the desktop on the 4:3 will take 16:9 shape leaving a dead area at the bottom of the screen. This might be a nvidia-driver bug, but it worked fine with kde 3.5.[something] given the exact same settings in nvidia-settings and the verry same driver installed. Also, on the 16:9 screen there is no desktop, only a black screen. One can move the mouse around and even start applications on the 16:9 screen with DISPLAY=:0.1, but no desktop is shown.
Comment 1 Stefan Klindtwordt 2008-09-24 22:39:59 UTC
Same problem here.
I found out that I can set the desktop on my primary screen to the correct resolution by deleting the second desktop entry in ~/.kde4/share/config/plasma-appletrc followed by a restart of xdm. After reboot my desktop is being set to the wrong condition again.
Comment 2 Artur Souza (MoRpHeUz) 2009-02-28 00:12:30 UTC
Is this still valid for kde 4.2 ?
Comment 3 Mikael Jansson 2009-02-28 00:36:53 UTC
Not exactly the same but I still have problems.

Before, the desktop got cut off at the bottom of the screen.
"...the desktop on the 4:3 will take 16:9 shape
leaving a dead area at the bottom of the screen."

Now the desktop WILL fill the hole 4:3 screen, BUT it also expands beyond the 4:3 screen so that some of the desktop is outside the screen area. I'm not sure, but I think it still takes 16:9-shape, witch would make sense.

The second (16:9) screen is still black, meaning no desktop, only a really ugly cross-looking pointer, and the ability to start up an app in it.

For me personally, this would work if the desktop on the 4:3-screen would not take 16:9-shape because I only want to use it to run XBMC on the second screen. But of course that's just me.

To day I'm running Ubuntu Intrepid with KDE 4.2 and an nvidia EN7200GS with driver version 180.11.

Hope this helps, please ask for more info if you need it.
Comment 4 Mikael Jansson 2009-03-01 22:23:22 UTC
(In reply to comment #3)
> Not exactly the same but I still have problems.
> 
> Before, the desktop got cut off at the bottom of the screen.
> "...the desktop on the 4:3 will take 16:9 shape
> leaving a dead area at the bottom of the screen."
> 
> Now the desktop WILL fill the hole 4:3 screen, BUT it also expands beyond the
> 4:3 screen so that some of the desktop is outside the screen area. I'm not
> sure, but I think it still takes 16:9-shape, witch would make sense.
> 
> The second (16:9) screen is still black, meaning no desktop, only a really ugly
> cross-looking pointer, and the ability to start up an app in it.
> 
> For me personally, this would work if the desktop on the 4:3-screen would not
> take 16:9-shape because I only want to use it to run XBMC on the second screen.
> But of course that's just me.
> 
> To day I'm running Ubuntu Intrepid with KDE 4.2 and an nvidia EN7200GS with
> driver version 180.11.
> 
> Hope this helps, please ask for more info if you need it.


Just remembered, when I enable the 'separeted X screens'-setting, the desktop effects turns off.
Comment 5 Aaron J. Seigo 2009-06-13 19:55:48 UTC

*** This bug has been marked as a duplicate of bug 158850 ***