Dear Paul,
Am 28.04.21 um 13:15 schrieb Paul Koster:
Hope you can help with me this. Got myself a brand new HP ENVY
all-in-One with B&O speakers built-in. No sound at all whereas all
controls and settings seem to work without hiccups. Turns out a GPIO pin
needs to be set. Found this out using hda-analyzer python script. Now I
execute this script on start-up to make it work:
/usr/bin/hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_MASK 0x04
/usr/bin/hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DIRECTION 0x04
/usr/bin/hda-verb /dev/snd/hwC0D0 0x01 SET_GPIO_DATA 0x04
The strange thing is, when I close applications using sound, the system
goes mute within a minute or so and I have to run hda-analyzer to toggle
the 'enable' settings of this GPIO pin.
For now I run the gnome settings widget at startup, displaying the sound
settings and running the hda-verb commands above. This seems enough to
leave the sound on.
Nice analysis.
Is there a better solution to work around this GPIO pin issue?
Yes, it should be fixed in the Linux kernel. Please create an issue in
the Linux Bugzilla [1] as described in [1], and attach the
`alsa-info.sh` output there.
Kind regards,
Paul
PS: I recommend to only buy systems with official GNU/Linux support like
Google Chromebooks, Puri.sm, System76, Dell, Lenovo (and probably
others). That way the right companies get your money.
[1]: https://www.alsa-project.org/wiki/Bug_Tracking
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