At Thu, 29 Jan 2009 22:33:19 +0100, Laurent Pinchart wrote:
On Thursday 29 January 2009, Takashi Iwai wrote:
At Thu, 29 Jan 2009 02:47:45 +0100,
Laurent Pinchart wrote:
Hi Takashi,
On Wednesday 28 January 2009, Takashi Iwai wrote:
At Tue, 27 Jan 2009 16:51:56 +0100, Laurent Pinchart wrote:
Hi everybody,
I've received a brand new Dell Latitude E6500 and found out that the sound card wasn't exactly well supported by ALSA.
Sound is barely audible (so faint that I'm not even sure if the proper sound is output or if I just get garbage), with some loud noise here and there that seem to correspond to the saturated audio data parts.
The sound card is an HDA-Intel with an IDT 92HD71B7X codec. Hardware information can be found at http://www.alsa-project.org/db/?f=30cac30e5b1ddd9c842481a830c250cc3e5 93b0 d. A
Please run with --no-upload and included the result in the post.
Done, output included in this e-mail.
Anyway, this problem might be related with the volume-knob. Install hda-verb and try the following
hda-verb /dev/snd/hwC0D0 0x28 SET_VOLUME_KNOB 0xff or hda-verb /dev/snd/hwC0D0 0x28 SET_VOLUME_KNOB 0
Unfortunately none of those make a difference.
After doing this, check /proc/asound/card0/codec* whether this node 0x28 is really changed.
Yes it does (the range is 0x00-0x7f and not 0x00-0xff).
The bit 7 is to specify the direct mode. Maybe we need to select the input of the widget beforehand:
% hda-verb /dev/snd/hwC0D0 0x28 SET_CONN 1 % hda-verb /dev/snd/hwC0D0 0x28 SET_VOLUME_KNOB 0xff
Takashi