I just tried booting an older kernel and all my GLX
screensavers/programs are working again.
I was using Kernel Linux 3.2.0-56-lowlatency and then it was updated
yesterday to Kernel Linux 3.2.0-57-lowlatency and then the GLX problems
started, so I have now booted into Kernel Linux 3.2.0-56-lowlatency again.
Could there be a bug in the later kernel?
David K
On 07/12/13 11:36, David King wrote:
Hi all,
I am currently having a problem with all things GLX related, i.e.
screensavers that use GLX are no longer working, also a game that uses
GLX. E.g. when running foobillard in terminal I get the following error:
main:rgstereo=0Video mode set failed: Couldn't find matching GLX
visual
It used to work fine, running from the main menu. But now it's failing
to find the right GLX visual. I get the same thing for screensavers,
Xlib: extension "GLX" missing on display ":0.0"
This line is displayed several times on the screen instead of the
screensaver, and the last bit says it exited abnormally (code 1)
I wonder if this is Flash/Gnash related? I recently found that Firefox
was running extremely slowly on any site with Flash elements, so I
removed Flash (I have heard it is very troublesome at times to some
Linux users) and installed Gnash instead. Firefox works much better,
and also with Flash-blocking add ons so that I only allow certain
sites to use Flash.
I am not sure if the GLX problem occurred before or after this.
My Desktop is XFCE on Ubuntu 12.04
Of course it might also have been a recent update that might have
knocked out GLX.
In using Synaptic I see that the GLX stuff is still installed. I tried
reinstalling some of it, but it made no difference.
I am using the Linux open source graphics driver for my graphics card,
nothing proprietary. It is an AMD card.
So how do I get GLX working again?
David K
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