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The sound on my HP ProBook 6550b stopped working a couple of days ago. I get sound via headphones just fine. I did run alsamixer and all bars are at 100. I did check other posts but couldn't find something that helped.

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Have you try boot from Live CD / USB and check your speaker? –  penreturns Oct 13 '12 at 20:09

4 Answers 4

Have you seen the Sound Troubleshooting Procedure from Ubuntu community Wiki ?

Try it.

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Executing this worked for me:

killall pulseaudio; rm -r ~/.pulse*; sudo usermod -aG `cat /etc/group | grep -e '^pulse:' -e '^audio:' -e '^pulse-access:' -e '^pulse-rt:' -e '^video:' | awk -F: '{print $1}' | tr '\n' ',' | sed 's:,$::g'` `whoami`

This was extracted from a bigger sequence of commands posted in this blog.

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Sounds probly set to default to and is a seperate audio device (read as)
Try opening the pulse settings at the top right, and select different output device.

If that doesnt work, then theres a software "switch" that requires drivers (possibly at a USB level) Run "lspci" and look for alien unknown devices.

Terminal

lspci

This will list devices, Look for something like USB: Unknown/sound. Who knows. You can pastebin the output and ill look at it.

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Make sure that there is nothing wrong with the speakers inside the computer. If not download the driver by typing in google : sound driver for Hp probook 6550b and download the relevant file. To make sure the file opens, download 'wine' from the ubuntu software centre. It is a program that opens files compatible with Microsoft Windows. Hope this helps!

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Wine can't be used to install drivers for your hardware. wiki.winehq.org/… –  Mark Paskal Oct 14 '12 at 7:55
    
Not sure if trolling or... –  TardisGuy Oct 20 '12 at 6:17

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