On Thursday 29 January 2009, Takashi Iwai wrote: > At Thu, 29 Jan 2009 14:27:49 +0100, > > Laurent Pinchart wrote: > > Hi Takashi, > > > > On Thursday 29 January 2009, Takashi Iwai wrote: > > > At Thu, 29 Jan 2009 02:47:45 +0100, Laurent Pinchart wrote: > > > > 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=30cac30e5b1ddd9c842481a830c250c > > > > > >c3e5 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. > > > > > > 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.g > > >it > > > > I will test the snapshot this evening. > > > > > Also, check the headphone output at first. The speaker output needs > > > more work than the headphone in general. > > > > The headphone output works properly with the stock 2.6.28 kernel without > > having to mess with volume-knob. I haven't tested it with alsa-driver > > 1.0.19 yet. > > Ah, so only the speaker output is the problem? Yes that's right, at least as long as analog output is concerned. I haven't tested the HDMI output (there is no HDMI connector on the laptop itself, and I don't have a docking station) and the analog inputs (internal microphone and external input) yet. Best regards, Laurent Pinchart _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
