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[ubuntu] no sound on dell latitude E4300

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linux-howto

http://ubuntuforums.org – Hi everyone. Yesterday, on my dell latitude E4300, i updated ubuntu to 12.04 LTS and ever since i dont have sound anymore. when i go to sound properties, i can see only one device and sound test do not work. when i go to the command line and type alsamixer, the command returns nothing, as if alsa was not installed. Please, if anyone knows how to enable the sound that would be very helpful, i have audio recordings to translate into text before tomorow. (Hardware)