Comment 11 for bug 231986

Can I have an updated attachment of dmesg since you installed the linux-backport package, I am curious to see what the sound card initializes as... Have you tried playing sounds from other applications?

I am going to provide you with a link with some procedures that I want you to go through so we can have some more information about your hardware... If we still cannot come up with anything and we have the appropriate documentation I will create a bug report upstream for the kernel you have about this, it could be a bug with the driver itself.

Please include the information requested at [WWW] https://wiki.ubuntu.com/DebuggingHardwareDetection as separate attachments.

Thanks,

Richard Seguin