trouble with beryl on Kubuntu

[Guest]

Hey guys, sorry for the disturbance.
I am quite new at kubuntu and Linux in general. I managed after great trouble to install beryl on my laptop. The problem is that as soon as I switch through the beryl-manager from kde to beryl it doesn't seem to work. I can access beryl settings, when on KDE I can see the beryl diamond on my toolbar, but as soon as I switch to beryl, the toolbar disappears and I can only open stuff through alt+f1 thus I just go back to KDE through beryl-manager from konsole. When I type beryl on konsole I get this info:

Detected xserver : AIGLX

Checking Display :0.0 ...

Checking for XComposite extension : passed (v0.4)
Checking for XDamage extension : passed
Checking for RandR extension : passed
Checking for XSync extension : passed

Checking Screen 0 ...

Xlib: extension "GLX" missing on display ":0.0".
Root visual is not a GL visual
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
beryl: glXCreateContext failed
beryl: Failed to manage screen: 0
beryl: No manageable screens found on display :0.0

I think it has something to do with "glXCreateContext failed"
My gfx card is nvidia geforce, I am currently using the latest drivers. In many forums I see that you have to make some changes in xorg but I do not know how so please if it is possible, bear with me and explain step by step.
Thanks and sorry once again.

[Monster_user]

Re: trouble with beryl on Kubuntu

What distribution are you using?

9.04? 8.10? or an older version?

9.04 has many of the Beryl effects built into KDE 4.2, and is very stable to use. Also on later versions (sometime after 6.06), Beryl support was replaced by "Compiz-Fusion", and now its just Compiz again.
----------------------------------------------------

You need to add a few items to the Xorg.conf file.

Alt-F2 (or Alt-F1?)

kdesu kate /etc/X11/xorg.conf

Under this section

Section "Device"
Driver "nvidia"

Add these lines

Option "AllowGLXWithComposite" "True"
Option "RenderAccel" "True"
Option "AddARGBGLXVisuals" "True"

Then at the end, add these lines.

Section "Extensions"
Option "Composite" "Enable"
EndSection

[flarson]

Re: trouble with beryl on Kubuntu

The first thing to do is know what your current situation is. Start by running
glxinfo
It will spew out a lot of info but scroll back to the top and you will find that the first few lines tell you about openGL support.
~/.kde/share/kde4/services $glxinfo
name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4
server glx extensions:

If you do not see this you do not have GLX support. The nvidia drivers include openGL support and it should be installed for you. If you installed the Nvidia drivers via apt youcan see which packages are installed by running
dpkg -l | grep nvidia
It should show you a version of kernel module and the same version of nvidia-glx. If youinstalled from the nvidia website GLX is probably installed. So then you need to check your X configuration.

Look in /etc/X11/xorg.conf and see if the driver is nv or nvidia
grep Driver /etc/X11/xorg.conf

If it is nv, that is the xorg, non-accelerated driver and you are not yet using the nvidia driver. If that is the case run
nvidia-xconfig
to make the changes to your xorg.conf file. nvidia-xconfig is part of the Ubuntu nvidia-glx package and the nvidia installer installs it also.

So now you restart the Xserver and see what happens.