On 2012-01-13 09:50, Takashi Iwai wrote:
At Thu, 12 Jan 2012 16:31:14 +0100, David Henningsson wrote:
Several users have reported "choppy" audio under the 3.2 kernel, and that changing position_fix to 1 has resolved their problem. The chip is an nVidia Corporation MCP89 High Definition Audio, [10de:0d94] (rev a2).
Cc: stable@kernel.org (v3.2+) BugLink: https://bugs.launchpad.net/bugs/909419 Signed-off-by: David Henningssondavid.henningsson@canonical.com
Applied now. Thanks.
Thanks.
Just a thought...this was reported as working better under the previous Ubuntu release, which run kernel 3.0 (and not too many changes in PulseAudio), i e, a regression. While I haven't done any serious kernel bisection of this, I know you've being doing some work with the snoop/non-snoop stuff lately, which I haven't followed closely. Do you think this can be related to why we're seeing broken position values when we're using the DMA position buffer map on some machines?