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). > Then, try the latest alsa-driver snapshot from > > ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-sna >pshot.tar.gz > > This contains more fixes since 1.0.19. It's generated from the GIT > tree below: > git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git > > git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/alsa-driver-build.git I've downloaded, installed and tested the latest alsa-driver snapshot. No change was visible (or rather audible) in the internal speakers behaviour. > Also, check the headphone output at first. The speaker output needs > more work than the headphone in general. As stated in my previous e-mail, headphones work properly. Only the internal speakers cause trouble. > You can also try to change the power-map by > hda-verb /dev/snd/hwC0D0 1 0x7ec 0 > This is pretty specific to IDT codecs. Changing power-map with the above command doesn't seem to have any effect either. Best regards, Laurent Pinchart _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
