J.J. Garcia wrote:
Same here, same "ICH6 Family) High Definition Audio Controller" for a Dell Inspiron 3100 and having the same issue, no sound at all, even checking alsamixer to verify muted channels.
I have a similar problem, where the aic7xxx module will not detect my Adaptec SCSI host adapter. I think I have seen other issues with various PCI cards. The aic7xxx module is the same version on the U3 kernel.
Maybe some PCI enumeration or initialization code has changed in U4? I am still investigating on my system, but I have limited downtime to check different options and adapters on my server.