[alsa-devel] [REGRESSION bisected] Sound goes too fast due to commit 7b3a177b0

Éric Piel eric.piel at tremplin-utc.net
Wed Apr 14 16:36:36 CEST 2010

On 14/04/10 15:39, Takashi Iwai wrote:
> bdl_pos_adj is really a workaround for devices that report wrong DMA
> position (or at the wrong timing).  I guess position_fix=1 may fix
> better.
> Although the driver already has a dynamic switching of position_fix
> method, it checks only the very first read.  If it gives a (more or
> less) sane value, it prefers the position-buffer method (corresponding
> to position_fix=2) rather than reading LPIB register
> (position_fix=1).
> It seems, however, that more devices work sanely with LPIB reg
> nowdays.  This wasn't the case formerly.  So, it might be better to
> use position_fix=1 as default for modern systems...
Could you check that for you too adding "position_fix=1" fixes the problem?

To do so, edit /etc/modprobe.conf and add this line at end:
options snd-hda-intel position_fix=1

You need to reboot for this to be taken into account.


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