'Twas brillig, and Clemens Ladisch at 01/10/10 07:44 did gyre and gimble: > Takashi Iwai wrote: >> Mark Brown wrote: >>> On Thu, Sep 30, 2010 at 04:09:56PM +0100, Colin Guthrie wrote: >>>> *shouldn't* use them, but at present it does and they *are* active and >>>> used, so it's not an issue for me), the problem is rather one of setting >>>> Master (not PCM) to 0% aka -46.5dB causes some kind of auto-mute that >>>> cuts off all sound. It shouldn't do that. >>> >>> Is this perhaps just an error in the TLV information - should it be >>> flagging that the minimim gain is mute but isn't? >> >> There is no clear (or consistent) definition in HD-audio codec, I guess. > > The HDA spec is quite clear that muting is done only with the mute bit. Good :) >> Some chips do mute at 0 and some not. > > Those that do are violating the specification. > > But we have to support them anyway. > Colin, please tell us the IDs of your codec so that we can add a TLV > workaround to the driver. I presume the alsa-info.sh output is sufficient here? http://colin.guthr.ie/alsa-info.txt snd_hda_intel : Intel Corporation|82801G (ICH7 Family) High Definition Audio Controller (vendor:8086 device:27d8 subv:1028 subd:01bd) (rev: 01) Many thanks Col -- Colin Guthrie gmane(at)colin.guthr.ie http://colin.guthr.ie/ Day Job: Tribalogic Limited [http://www.tribalogic.net/] Open Source: Mageia Contributor [http://www.mageia.org/] PulseAudio Hacker [http://www.pulseaudio.org/] Trac Hacker [http://trac.edgewall.org/] _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
