No sound on acer switch 10E bytcr-rt5640

Technical Issues Hardware and Drivers
1

Hello
I just installed this amazing distro on the old 2in1 device and with only 2 GB Ram it’s fantastic…everything works except…sound…through speakers or headphones I get nothing.
Tried alsamixer to select soundcard but it gives no sound and reverts to default
Anybody could help please?
this is aplay outcome

~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: bytcrrt5640 [bytcr-rt5640], device 0: 1 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: bytcrrt5640 [bytcr-rt5640], device 1: Deep-Buffer Audio (*) []
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Audio [Intel HDMI/DP LPE Audio], device 0: HdmiLpeAudio [Intel HDMI/DP LPE Audi]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Audio [Intel HDMI/DP LPE Audio], device 1: HdmiLpeAudio [Intel HDMI/DP LPE Audi]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
2

Hello @giukas ,
Perhaps what pablo1 posted at 2018-06-07 09:43:15 (No sound on bytcr-rt5640 card with Pulseaudio / Kernel & Hardware / Arch Linux Forums) may help https://bbs.archlinux.org/viewtopic.php?id=237790

3

Thank you I’ll try that today

4

No luck unfortunately. Very schizzo behavior: file plays, but no sound; then reboot, sound cRkard muted, no way to unmute; in alsamixer speakers seem ok, but L and R alone stay on 00.

5

My next google hit is:
insert use_ucm=no into /etc/pulse/default.pa
load-module module-udev-detect tsched=0 fixed_latency_range=yes use_ucm=no
It is from ms.yoshi 2020-11-03 12:46:26

6

Thank you very much I installed on another netbook and everything is fine