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I am trying to set up an old HP Pavilion with a amd processor and an Ati radeon graphics card as a media PC. I am having a lot of hdmi issues.

What I did was update to the grub as following:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

To

GRUB_CMDLINE_LINUX="quiet splash radeon.audio=1"

This fixed the audio and I was able to get it working for a little while. But now my PC won't detect the hdmi display at all.

I was wondering what this update has affected the display?

I did try and get the catalyst control center but that told me that there was no Ati graphics card detected ?

What should I do ?

share|improve this question
    
AFAIK, if you have the drivers from the AMD site you will have to install them again after a kernel update. If you have the fglrx drivers from ubuntu it is supposed to automagically update or recompile after a kernel update. –  thom Nov 16 '13 at 1:55
    
Please add your graphics card version (lspci | grep VGA) older cards may no longer be supported by the proprietary AMD drivers. –  Takkat Nov 16 '13 at 7:17
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