KDE Broken After Latest F10 Updates

[soxfan]

I just did a yum update on my F10 desktop this morning and after a reboot KDE seems to be broken. The update included several xorg and mesa packages. The problem is I get to my GDM login screen OK but when I actually login I see the KDE splash screen, then my screen turns all white for a few seconds, then it goes very, very dark. It is not totally black; I can still barely make out a few things on my screen, but that's about it. XFCE and Gnome desktops seem to work fine. I'm using the proprietary NVidia display driver, but I switched to the generic 'nv' driver and it made no difference. The Xorg.0.log doesn't seem to indicate any issues. I have a pretty generic KDE desktop. I have installed a few additional themes, but that's about it. Not even sure at this point how I can get in and set everything to default to see if I've got a bad setting or something like that.

Anyone else seeing this issue or have suggestions on what to look for?

TIA,
John

[Hlingler]

Post your xorg.conf file. Actually, you can also check that file yourself for prime suspect #1: Option "BackingStore" ON. Otherwise, it may require digging. F10 w/KDE4 looks good here after all updates, but then I run KDM....

V

[floyduww]

I encountered the exact same problem. I have a temporary solution to get to a working(ish) desktop.

You need to turn off Compositing for kde. (lose your eye candy).

To do this edit

~/.kde/share/config/kwinrc

Change
[Compositing]
Enabled=true

to

[Compositing]
Enabled=false

[soxfan]

Originally Posted by floyduww

I encountered the exact same problem. I have a temporary solution to get to a working(ish) desktop.

You need to turn off Compositing for kde. (lose your eye candy).

To do this edit

~/.kde/share/config/kwinrc

Change
[Compositing]
Enabled=true

to

[Compositing]
Enabled=false

Thanks, that fixed it for me as well. Do you know if a bug has already been filed anywhere on this?

[floyduww]

I don't know if any bugs have been filed. I have not found anything in a day and half of searching on this problem.

[soxfan]

Originally Posted by floyduww

I don't know if any bugs have been filed. I have not found anything in a day and half of searching on this problem.

I found this link:
http://bugs.kde.org/show_bug.cgi?id=166446

By switching from OpenGL to XRender I can re-enable compositing, but effects are sluggish. Looks like this is a KDE bug that has been fixed, but somehow crept into the F10 packages.

[floyduww]

Here is how I solved it

in
[root]# cd /usr/lib/xorg/modules/extensions/
[root]# mv libglx.so libglx.so.bkp
[root]# ln -s nvidia/libglx.so libglx.so


The update of xorg overwrote the symlink to use nvidia glx libs. And it works really well. No Sluggishness

[soxfan]

Thanks, I will give it a try.