ubuntu-audio-dev team mailing list archive

[David Henningsson <david.henningsson@xxxxxxxxxxxxx>]

Unfortunately a bug causing kernel memory corruption slipped into the 
released 13.04 kernel. It is caused by a last-minute patch we backported 
to try to improve HDMI audio support for Haswell, so upstream kernels 
are unaffected.

Since it's memory corruption, several symptoms can appear, but the most 
common seem to be:

 * Sound card fails to load at all. Dmesg shows an oops in 
patch_generic_hdmi

 * Sound card loads, but any attempt to access it fails with -19 or 
-ENODEV.

This concerns HDA Intel cards that have HDMI codecs. Depending on 
hardware layout, sometimes analog audio and HDMI audio are two codecs on 
the same card, in which case analog audio can be affected too.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1169984


--
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic