On Fri, 07 Aug 2020 15:05:12 +0200, Alexander Giese wrote: > > Hello alsa-devel-team, > > I have a problem with the built-in speakers on the 2020 model of the > hp-spectre. From my unexperienced point of view, the audio sinks are > correctly identified and therefore I tried tweaking the GPIO pins with > success. > > Information from alsa-info is here: > http://alsa-project.org/db/?f=c8ee13e52fd6b2377573a7123c2887fe4d59c917 > > When I use hda-verb with the following parameters 2 of 4 of my > built-in speakers start working: > > hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x02 (or 0x04) > hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DIR 0x01 > hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_MASK 0x01 So this means that GPIO pin#0 (0x01) is the amp, and it needs to be cleared. > In addition, my mute-mic-led on the keyboard glows when: > > hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x01 (or 0x02) > hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DIR 0x04 > hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_MASK 0x04 And this means GPIO pin#2 being the mic-mute LED, inverted (0=on, 1=off). To check the behavior, try the following: hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DIR 0x01 hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_MASK 0x01 hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x00 this should enable the speaker, and the succeeding call hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x01 turns off the speaker. Also, hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DIR 0x04 hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_MASK 0x04 hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x00 turns on the mic-mute LED, and the succeeding call hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x04 turns off the LED. If above is the confirmed, you can manage both in a shot by hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DIR 0x05 hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_MASK 0x05 hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x04 will turn on the speaker but off the LED, and hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x05 will turn on both speaker and LED. And, doesn't the machine have the playback mute LED? Usually it's controlled with the GPIO, too, but this case > Since I do not understand how the GPIO-settings are integrated and > applied in the upstream software for corresponding models, I would > very much appreciate any help to get this to work out of the box in > future releases so I do not have tweak my system all the time and > others can benefit as well. > > Any suggestions on getting all 4 speakers to work or the > mute-volume-led to glow are very much welcome alike! The surround/bass speaker is often more difficult. We need either the contact to the vendor or the reverse engineering. Takashi
