KDE compositing not working when external monitor connected

Sat Aug 08, 2009 11:26 pm

KDE compositing not working when external monitor connected

Sat Aug 08, 2009 11:26 pm

Hey everyone,

I have KDE 4.3 with Fedora 11 on my laptop with Nvidia 8400M graphics card (with proprietary Nvidia driver). It runs perfectly. However when I connect my external monitor to my laptop, and choose the twin view mode in nvidia-settings, the compositing stops working (90% reproducible). When I press Alt+shift+f12, both screens turn white and become non-responsive. Any one has some advice? Thanks a lot!

Rick

Sun Aug 09, 2009 12:00 am

Re: KDE compositing not working when external monitor connected

Sun Aug 09, 2009 12:00 am

Which nvidia driver version are you using? Are you using dynamic twinview, or using nvidia-settings to configure your xorg.conf file?

Man is the lowest-cost, 150-pound, nonlinear, all-purpose computer system which can be mass-produced by unskilled labor.
-NASA in 1965

Sun Aug 09, 2009 1:52 am

Re: KDE compositing not working when external monitor connected

Sun Aug 09, 2009 1:52 am

TheBlackCat wrote:Which nvidia driver version are you using? Are you using dynamic twinview, or using nvidia-settings to configure your xorg.conf file?

Hi, my Nvidia driver's version is 185.18.31. I am configuring twinview everytime I connect the monitor, and I did not save it to xorg.conf

Thu Oct 29, 2009 12:35 pm

Re: KDE compositing not working when external monitor connected

Thu Oct 29, 2009 12:35 pm

Im still having this problem here. With kde 4.2 and Kubuntu 9.04, it works fine.

But when im using kubuntu 9.10 fresh install and kde 4.3, i try to activate dual monitors (twinview) with nvidia-settings , but the plasma crash when i activate the effects. Using Nvidia GeForce 7000M with nvidia drivers 185 or 190.

The problem only happens when i change the view with nvidia-settings. If i start kdm with pre configured twinview, it works fine.

Can i help with some log?

Thanks.

Fri Oct 30, 2009 4:57 am

Re: KDE compositing not working when external monitor connected

Fri Oct 30, 2009 4:57 am

Can you please install the appropriate debugging packages ( libqt4, kdebase-workspace-plasma, kdelibs5 ) and generate a backtrace?

System Settings and Device Actions KCM maintainer

Tue Nov 03, 2009 11:04 am

Re: KDE compositing not working when external monitor connected

Tue Nov 03, 2009 11:04 am

I think the problem is with the Plasma; i can configure the twinview without problems, but plasma crash when i turn the Plasma Effects on (my two monitors stay white). It reapers if i turn the effects off (ALT+SHIFT+F12).

No erros in kdm and/or xorg's logs. "The problem only happens when i change the view with nvidia-settings. If i start kdm with pre configured twinview, it works fine."

-------

jorge@laptop:~$ gdb nvidia-settings 2>&1 | tee gdb_nvidia.txt
jorge@laptop:~$ cat gdb_nvidia.txt
GNU gdb (GDB) 7.0-ubuntu
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Lendo símbolos de /usr/bin/nvidia-settings...(no debugging symbols found)...concluído.
(gdb) run
Starting program: /usr/bin/nvidia-settings
[Thread debugging using libthread_db enabled]
Program exited normally.

Tue Nov 03, 2009 3:25 pm

Re: KDE compositing not working when external monitor connected

Tue Nov 03, 2009 3:25 pm

The crash handler window did not appears. I think that the plasma-desktop did not crashes, cause when i press ALT+****+F12 , the screen returns. I have installed this package, what can i do now? Seems that the process creates a child process:

jorge@laptop:~$ gdb plasma-desktop
GNU gdb (GDB) 7.0-ubuntu
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Lendo símbolos de /usr/bin/plasma-desktop...Lendo símbolos de /usr/lib/debug/usr/bin/plasma-desktop...concluído.
(no debugging symbols found)...concluído.
(gdb) run
Starting program: /usr/bin/plasma-desktop
[Thread debugging using libthread_db enabled]
QDBusObjectPath: invalid path ""
QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout
findServiceByDesktopPath: /home/jorge/.kde/share/apps/RecentDocuments/images.desktop not found
findServiceByDesktopPath: /home/jorge/.kde/share/apps/RecentDocuments/01 Marcus Garvey Time.mp3.desktop not found
findServiceByDesktopPath: /home/jorge/.kde/share/apps/RecentDocuments/02 God Bless.mp3.desktop not found
findServiceByDesktopPath: /home/jorge/.kde/share/apps/RecentDocuments/03 The Race.mp3.desktop not found
findServiceByDesktopPath: /home/jorge/.kde/share/apps/RecentDocuments/04 Guts.mp3.desktop not found
findServiceByDesktopPath: /home/jorge/.kde/share/apps/RecentDocuments/05 Rich Man, Poor Man.mp3.desktop not found
findServiceByDesktopPath: /home/jorge/.kde/share/apps/RecentDocuments/06 No Wrong Idea.mp3.desktop not found
findServiceByDesktopPath: /home/jorge/.kde/share/apps/RecentDocuments/07 Follow the Rainbow.mp3.desktop not found
Object::connect: No such signal SystemTray::Manager::jobStateChanged(SystemTray::Job*)
Unrecognized character: /
Unrecognized character: /
ERROR: syntax error
QGraphicsGridLayout::itemAt: invalid index 0
QGraphicsGridLayout::itemAt: invalid index 2
QGraphicsGridLayout::itemAt: invalid index 6
Invalid D-BUS interface name 'org.kde.plasma-desktop.PlasmaApp' found while parsing introspection

Program exited normally.
(gdb)

Wed Nov 04, 2009 6:06 am

Re: KDE compositing not working when external monitor connected

Wed Nov 04, 2009 6:06 am

Plasma Desktop is a unique application, meaning only one instance of it can run at a time. Therefore it automatically forks itself during startup.

To stop the automatic forking:

Code: Select all: plasma-desktop --no-fork

System Settings and Device Actions KCM maintainer

Wed Nov 04, 2009 11:55 am

Re: KDE compositing not working when external monitor connected

Wed Nov 04, 2009 11:55 am

Ok! :

Starting program: /usr/bin/plasma-desktop --nofork
[Thread debugging using libthread_db enabled]
QDBusObjectPath: invalid path ""
QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout
Object::connect: No such signal SystemTray::Manager::jobStateChanged(SystemTray::Job*)
[New Thread 0x7fffd7b5c910 (LWP 1897)]
Unrecognized character: /
Unrecognized character: /
ERROR: syntax error
QGraphicsGridLayout::itemAt: invalid index 0
QGraphicsGridLayout::itemAt: invalid index 2
QGraphicsGridLayout::itemAt: invalid index 6
[New Thread 0x7fffd6ae2910 (LWP 1898)]

When i activate the second monitor (screen) via nvidia-settings (twinview), no logs; when i turn on the effects: no new log in the gdb

Thu Nov 05, 2009 3:58 am

Re: KDE compositing not working when external monitor connected

Thu Nov 05, 2009 3:58 am

This looks like one of those bugs that for unknown reasons will never occur when the application is run by a debugger.

One thing you could try is to normally run "plasma-desktop --no-fork" and try to crash it then. The crash handler should appear.

System Settings and Device Actions KCM maintainer

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