# No sound on acer switch 10E bytcr-rt5640

**URL:** https://forum.maboxlinux.org/t/no-sound-on-acer-switch-10e-bytcr-rt5640/1296
**Category:** Hardware and Drivers
**Created:** [March 26, 2023, 3:06pm UTC](https://forum.maboxlinux.org/t/no-sound-on-acer-switch-10e-bytcr-rt5640/1296 "2023-03-26T15:06:36Z")
**Posts on this page:** 6
**Page:** 1

<div class="post-metadata">

### Author: ![giukas](https://forum.maboxlinux.org/letter_avatar_proxy/v4/letter/g/41988e/32.png) [@giukas](https://forum.maboxlinux.org/u/giukas)
#### Post date: [March 26, 2023, 3:06pm UTC](https://forum.maboxlinux.org/t/no-sound-on-acer-switch-10e-bytcr-rt5640/1296/1 "2023-03-26T15:06:36Z")

</div>

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

```auto
~ $ 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

```

---

<div class="post-metadata">

### Author: ![zolw](https://forum.maboxlinux.org/user_avatar/forum.maboxlinux.org/zolw/32/2210_2.png) [@zolw](https://forum.maboxlinux.org/u/zolw)
#### Post date: [March 26, 2023, 10:29pm UTC](https://forum.maboxlinux.org/t/no-sound-on-acer-switch-10e-bytcr-rt5640/1296/2 "2023-03-26T22:29:01Z")

</div>

> [@giukas](#):
>
> `bytcrrt5640`

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](https://bbs.archlinux.org/viewtopic.php?pid=1790288#p1790288)) may help [https://bbs.archlinux.org/viewtopic.php?id=237790](https://bbs.archlinux.org/viewtopic.php?id=237790)

---

<div class="post-metadata">

### Author: ![giukas](https://forum.maboxlinux.org/letter_avatar_proxy/v4/letter/g/41988e/32.png) [@giukas](https://forum.maboxlinux.org/u/giukas)
#### Post date: [March 27, 2023, 5:23am UTC](https://forum.maboxlinux.org/t/no-sound-on-acer-switch-10e-bytcr-rt5640/1296/3 "2023-03-27T05:23:26Z")

</div>

Thank you I’ll try that today

---

<div class="post-metadata">

### Author: ![giukas](https://forum.maboxlinux.org/letter_avatar_proxy/v4/letter/g/41988e/32.png) [@giukas](https://forum.maboxlinux.org/u/giukas)
#### Post date: [March 28, 2023, 3:39pm UTC](https://forum.maboxlinux.org/t/no-sound-on-acer-switch-10e-bytcr-rt5640/1296/4 "2023-03-28T15:39:36Z")

</div>

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.

---

<div class="post-metadata">

### Author: ![zolw](https://forum.maboxlinux.org/user_avatar/forum.maboxlinux.org/zolw/32/2210_2.png) [@zolw](https://forum.maboxlinux.org/u/zolw)
#### Post date: [March 30, 2023, 7:13am UTC](https://forum.maboxlinux.org/t/no-sound-on-acer-switch-10e-bytcr-rt5640/1296/5 "2023-03-30T07:13:46Z")

</div>

> [@giukas](#):
>
> bytcrrt5640

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](https://bbs.archlinux.org/viewtopic.php?id=259969)

---

<div class="post-metadata">

### Author: ![giukas](https://forum.maboxlinux.org/letter_avatar_proxy/v4/letter/g/41988e/32.png) [@giukas](https://forum.maboxlinux.org/u/giukas)
#### Post date: [March 30, 2023, 10:30am UTC](https://forum.maboxlinux.org/t/no-sound-on-acer-switch-10e-bytcr-rt5640/1296/6 "2023-03-30T10:30:54Z")

</div>

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