Arch Linux

progandy

Member

Registered: 2012-05-17

Posts: 5,259

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

There seems to be a related commit that will appear in 4.14-rc6:
https://git.kernel.org/pub/scm/linux/ke … ddbf179509

Last edited by progandy (2017-10-22 11:48:37)

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wille

Member

Registered: 2017-10-17

Posts: 1

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

I have the same issue, my device is: 00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)

I tested some kernels after 4.12.13 and all of them have this fault.

-thc

Member

Registered: 2017-03-15

Posts: 685

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

Unfortunately 4.14-rc6 doesn't resolve this issue.

loqs

Member

Registered: 2014-03-06

Posts: 18,042

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

@-thc can you please post the dmesg from 4.14-rc6,  wondering if it contains: "Unexpected TLV callback for slave" or "Mismatching dB step for vmaster slave"
There will definitely be one more release candidate for 4.14 before its release but if you want the issue to be fixed in 4.14 would recommend you contact upstream as soon as possible.
Otherwise the fix will have to be backported to 4.14.y stable from 4.15.

-thc

Member

Registered: 2017-03-15

Posts: 685

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

https://pastebin.com/bgzWiyu0

loqs

Member

Registered: 2014-03-06

Posts: 18,042

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

So the dmesg from 4.14-rc6 only complains about an issue with the i915 iGPU.  Would recommend you file a bug report on the kernel bugzilla
including references to the original commit from the bisection and the commit that was supposed to fix the issue and then
possibly reference the bug report in a post to the alsa-devel mailing list or the linux kernel mailing list.  More details about what to include in the link in post #22.

-thc

Member

Registered: 2017-03-15

Posts: 685

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

Prior to submitting this bug I wanted to test a combination of a different 4.13 kernel and my hardware.

Fortunately Ubuntu 17.10 uses the kernel 4.13.0. Booting live versions of Ubuntu Desktop 17.04 (kernel 4.10) and 17.10 (kernel 4.13) I was surprised: The sound is not muted under Ubuntu 17.10.

The dmesg from the Ubuntu kernel: https://pastebin.com/zAFHfy5x

Is it possible that Canonical already fixed this?

amhairghin

Member

Registered: 2015-10-14

Posts: 72

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

Any news about this? @-thc are you file a bug on the kernel bugzilla?

amhairghin

Member

Registered: 2015-10-14

Posts: 72

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

Hey!

Seems that with kernel 4.14.1 and after install alsa-utils package and reboot the sound works again!

I discover this making tests for bug in upstream https://bugzilla.kernel.org/show_bug.cgi?id=197959

@-thc can you confirm this?

progandy

Member

Registered: 2012-05-17

Posts: 5,259

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

Seems that with kernel 4.14.1 and after install alsa-utils package and reboot the sound works again!

alsa-utils calls "alsactl restore" during the boot process which restores a saved configuration or initializes to default values.
Most likely you would have been able to set up your sound without a reboot, but with unmuting your channels manually.
https://wiki.archlinux.org/index.php/Ad … e_channels

Edit: By the way, the initial fix should be this commit

Last edited by progandy (2017-11-22 11:57:55)

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amhairghin

Member

Registered: 2015-10-14

Posts: 72

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

By the way, the initial fix should be this commit

Yes, but finally the fix is this other commit.

-thc

Member

Registered: 2017-03-15

Posts: 685

Re: [SOLVED] Realtek sound (DQ87PG): Inaudible low volume after kernel 4.1

@amhairghin

I've installed the 4.14.3 package today. The problem is solved.