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
_______________________________________________
Mailing list: https://launchpad.net/~ubuntu-audio-dev
Post to : ubuntu-audio-dev@lists.launchpad.net
Unsubscribe : https://launchpad.net/~ubuntu-audio-dev
More help : https://help.launchpad.net/ListHelp
