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The time now is Wed 23 Oct 2019, 16:31
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 Forum index » Advanced Topics » Hardware » Audio
Atom Cherrytrail sst sound bytcr_rt5640
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stemsee

Joined: 27 Jun 2013
Posts: 2507
Location: In The Way

PostPosted: Fri 29 Mar 2019, 17:09    Post subject:  Atom Cherrytrail sst sound bytcr_rt5640
Subject description: hp g2 x2 tablet and others with atom x5-Z8350
 

Finally after much effort got my soundcard to work nicely.
Having compiled a new kernel which picks-up almost all the hardware on HP G2 X2 201 2-in-1 tablet with 4g ram and 64GB storage.

I finally found what works to get this soundcard to produce clear sound, at least on Fatdog64-800.

This works with libapulse, no need for pulseaudio and pavucontrol.Needs correct UCM files and intel firmware.

Download the attached asound.state config file and copy it to /etc/asound.state. Blacklist module 'blacklist snd_hdmi_lpe_audio', this might not be necessary. Set the defualt soundcard '1'.

Reboot and play music, I used vlc>audio device>direct hardware.
ucm.tar.gz
Description  real archive UCM goes to /usr/share/alsa/ucm
gz

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Filename  ucm.tar.gz 
Filesize  29.74 KB 
Downloaded  110 Time(s) 
xscreenshot-20190329T204948.png
Description  modules loaded, blacklisted blacklist snd_hdmi_lpe_audio
png

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Filename  xscreenshot-20190329T204948.png 
Filesize  50.95 KB 
Downloaded  132 Time(s) 
asound.state.gz
Description  fake .gz extension rename to asound.state copy to /etc/asound.state
gz

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Filename  asound.state.gz 
Filesize  70.49 KB 
Downloaded  112 Time(s) 
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stemsee

Joined: 27 Jun 2013
Posts: 2507
Location: In The Way

PostPosted: Thu 04 Apr 2019, 12:21    Post subject:  

I have found that I have to blacklist 5 sound modules and modprobe 3 of them after X starts.

blacklist
Code:
blacklist snd_hdmi_lpe_audio
blacklist snd_soc_set_atom_hifi2_platform
blacklist snd_soc_rt5640
blacklist snd_soc_rl6231
blacklist snd_soc_sst_bytcr_rt5640

modprobe after x
Code:
modprobe snd_soc_rt5640
modprobe snd_soc_rl6231
modprobe snd_soc_sst_bytcr_rt5640
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