Hi, I have the chance to re-visit the issue and get more information. From the circuit diagram, we know that the speaker amp is controlled by a GPIO pin. We can turn it on by using hda-verb, i.e. # -- X62 ALC662 GPIO to turn on speaker amp ------ /usr/bin/hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_MASK 0x01 /usr/bin/hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DIRECTION 0x01 /usr/bin/hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x00 Could it be possible to associate the GPIO with the master mute or speaker mute function? Any recommendation is much appreciated. I would like to have the direction so that I could work out the patch. e.g. An example code snippet would be very helpful. Thank you. Quintus On Fri, Aug 5, 2016 at 3:07 PM, Quintus Tim Leung <quintus@xxxxxxxxxxxx> wrote: > Hello all, > > I am using Debian sid on an X62 motherboard developed by a small group > from 51nb.com. > The X62 board is to replace the Thinkpad X60/X61 motherboard with > i7-5600U / 5500U CPU and DDR3. The audio part is built with Intel HDA > and Realtek ALC662 Rev3 codec with PAM8403 amplifier. > > However, the speaker has no sound under Linux. (The RealTek Windows > driver is working well on Windows 10, by the way.) I am sure that the > speaker is not muted in alsamixer. The headphone jack output is > working well. I tried hda-analyzer to change EAPD but it didn't help. > > I would like to have your advice for the direction to fix the issue. > What kind of quirk should be applied? Attached are the output of > alsa-info.sh and kernel log for your reference. > > If further information is required, I could contact the X62 hardware / > BIOS development team in China. > Thanks very much. > > Best regards, > Quintus > > p.s. > -- My apology. I should post this in plain text format -- ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
