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I am using Ubuntu 10.04.1 LTS. How can I upgrade the ALSA driver from 1.0.20 to 1.0.23?

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why do you need 1.0.23 (the version from maverick)? If you uplift your 10.04.1 to 10.04.3 you will have v1.0.22 - any reasons why your computer is 12-18 months without security patches? – fossfreedom Dec 25 '11 at 23:04
up vote 2 down vote accepted

I think you should follow the Ubuntu official guide about sound issues, specifically in the step 1 for your Ubuntu version: 1

It helps you upgrading alsa packages in the safest way at the versions available at these PPA:

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