I am running an Acer Aspire 5050-5827 with the Realtek ALC883. I can confirm that an update to date installation of Edgy Eft does not produce any sound. I am going to attempt to use OSS but would prefer that Alsa work instead. -- No sound on Acer laptops w/ Realtek ALC883 chipset https://launchpad.net/bugs/63971