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Beginner 20.04 no audio

MotaBreth

New member
Jul 30, 2020
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0
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Hi Everyone,

I've recently installed Pop OS 20.04 after moving over from Win10, and I'm not able to get any audio output from either my speakers (plugged into the back panel) or my headphones. I've done a lot of googling and followed a lot of advice from posts but I'm not really getting anywhere.

I can see my input/output devices in pavucontrol and alsamixer, and nothing is muted. I've followed the advice on the system76 support page and various other places but still no luck. I even re-installed from scratch earlier.

When I did my initial install I had audio via my headphones only. In my attempts at fixing the issue with my speakers I managed to stop the headphones working too. I've since completely re-installed Pop, and also tried live USBs of Fedora & Manjaro, and I get no audio with those either.

Can anyone help?

Edit: I'm still dual booting with Win10, and audio is working fine there (if it's relevant)
Edit 2: the card/chip is HDA Intel PCH Realtek ALC898 according to AlsaMixer
 

derpOmattic

Pop!_Muse
Trusted User
Founding Member
Nov 23, 2018
1,093
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www.patreon.com
Looks like the ALC898 has content protection technology baked in.

The ALC898 is a multi-channel High Definition Audio Codec with Realtek proprietary loss-less content protection technology that protects pre-recorded content while still allowing full-rate audio enjoyment from DVD audio, Blu-ray DVD, or HD DVD discs.
ALso looks like the drivers are "keep update to kernel upstream". https://www.realtek.com/en/component/zoo/category/pc-audio-codecs-high-definition-audio-codecs-software

Try updating to a newer kernel first. If that doesn't work, try installing the drivers directly. You can use this tool to upgrade the kernel. Maybe start at 5.6.19. If that doesn't help, go to 5.7.10.

If a new kernel doesn't fix it, try and older Pop 18.04 LTS. It has been linked many times here lately.
 

MotaBreth

New member
Jul 30, 2020
4
0
4
29
Looks like the ALC898 has content protection technology baked in.



ALso looks like the drivers are "keep update to kernel upstream". https://www.realtek.com/en/component/zoo/category/pc-audio-codecs-high-definition-audio-codecs-software

Try updating to a newer kernel first. If that doesn't work, try installing the drivers directly. You can use this tool to upgrade the kernel. Maybe start at 5.6.19. If that doesn't help, go to 5.7.10.

If a new kernel doesn't fix it, try and older Pop 18.04 LTS. It has been linked many times here lately.
I've tried the two kernels that you suggested but still no change. I tried to install the drivers using this guide, but they fail to compile.
 

MotaBreth

New member
Jul 30, 2020
4
0
4
29
Yep, when I try to compile I get the error below:

make[1]: Entering directory '/usr/src/linux-headers-5.7.10-050710-generic'
HOSTCC scripts/basic/fixdep
HOSTCC scripts/kconfig/conf.o
HOSTCC scripts/kconfig/confdata.o
HOSTCC scripts/kconfig/expr.o
LEX scripts/kconfig/lexer.lex.c
/bin/sh: 1: flex: not found
make[3]: *** [scripts/Makefile.host:9: scripts/kconfig/lexer.lex.c] Error 127
make[2]: *** [Makefile:588: syncconfig] Error 2
make[1]: *** [Makefile:695: include/config/auto.conf.cmd] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-5.7.10-050710-generic'
make: *** [Makefile:167: compile] Error 2
 

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