[Yoghurt]

Brad wrote:

what is the audio device/chip in the non working tablet(s)?

rt5651

Someone might look into these files. Especially the UCM/HiFi

* UCM File. Quite empty EnableSequencefor Speakers.  https://github.com/plbossart/UCM/blob/master/bytcr-rt5651/HiFi#L157

* Codec source code. https://github.com/torvalds/linux/blob/master/sound/soc/codecs/rt5651.c#L321

* Board source code. https://github.com/torvalds/linux/blob/master/sound/soc/intel/boards/bytcr_rt5651.c#L53

* UCM installation. Copy HiFi to /usr/share/alsa/ucm, folder may needs to be created. See https://github.com/plbossart/UCM/tree/master/bytcr-rt5651

* To apply changes do pulseaudio –kill ; pulseaudio –verbose

UCM: I tried to add LOUT L/R and OUT to Speaker sequence, but had no success yet. The device is visible in list, the meters also tells there is/should be audio output (when playing a music track), but there is nothing to hear in real.

EnableSequence [
cdev “hw:bytcrrt5651”
cset “name=’Speaker Switch’ on”
cset “name=’LOUT L Playback Switch’ on”
cset “name=’LOUT R Playback Switch’ on”
cset “name=’OUT Playback Volume’ 100”
]

[Yoghurt]

el Salmon wrote:

It seems we are close to get a fix. Did you try with the latest kernel (4.13-rc1) ?

 

Yes. Im on 4.13-rc1. Speakers do NOT work, but headphones do. I also got UCM files installed.

[Yoghurt]

Audio itself is not broken on the Hi10 . I tried Headphones and they do work, bluetooth too, so its not an driver problem. Its a problem in the Alsa-UCM files (basically the mapping/routes), thats where our speaker mapping is broken and needs to be fixed.

Here is the relevant config which needs to be installed: https://github.com/plbossart/UCM/tree/master/bytcr-rt5651

Here is an GitHub issue about the rt5651 which is the audio hardware in our device. Maybe someone can work out a fix.

[Yoghurt]

What is the current status of Chuwi Hi10 (Plus) and Linux? I just found some posts about Linuxium but no recent post about what works and what not.

• Can I wipe the whole disk and just install it as on a normal desktop?
• What about other Linux distris? E.g. Arch Linux – https://github.com/danielotero/linux-on-hi10
• Are there any special steps I need to follow for installing Linux (other than doing it on a desktop device)?

 

Thanks for any answer

[Author]

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