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On a fresh Xubuntu install today I installed fglrx-updates, fglrx-amdcccle-updates and fglrx-updates-dev and, after restarting, everything worked fine apart from audio. The volume indicator is greyed out and there are no sound options to be found anywhere. I installed pavucontrol and xfce4-mixer but neither of them will open, and every time I try to play a song, the music player (I've tried VLC and gmusicbrowser) either freezes or sits at 0:00. Firefox hangs and eventually needs to be forced closed if I try to watch a video on Youtube or elsewhere.

lspci | grep Audio returns the following:

00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05) 
01:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Device aab0

EDIT: I'm using a Radeon HD 7750 card. I'm not using the HDMI audio from it, but two speakers that are plugged into the port for the onboard audio.

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uninstall catalyst, i have experience with it, it makes ubuntu unstable.. use ubuntu drivers instead –  Hojat Taheri Apr 14 '13 at 14:14
    
@user1262738 What drivers are those? The default drivers I started with restricted me to 4:3 on my 16:9 screen. –  George A. Apr 14 '13 at 14:41

1 Answer 1

George A. solved the problem in his question:

The problem must lie with Pulseaudio, as I followed the instructions here to uninstall it and, after rebooting, everything worked perfectly!

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