Computer beeps very loud on start

[Txordi00]

I have a Lenovo Yoga Slim 7 14APU8.
From dmidecode:

System Information
	Manufacturer: LENOVO
	Product Name: 83AA
	Version: Yoga Slim 7 14APU8
	Wake-up Type: Power Switch
	SKU Number: LENOVO_MT_83AA_BU_idea_FM_Yoga Slim 7 14APU8
	Family: Yoga Slim 7 14APU8

cat /sys/class/sound/hwC1D0/subsystem_id
0x17aa38bb

Using the latest Fedora 39 with Kernel 6.6.7, I disabled driver runtime suspend/resume PM and placed the provided files TIAS2781RCA4.bin and TAS2XXX38BB.bin in /lib/firmware. Immediately sound got miles better. Finally, I compiled, enabled and started the service alsa-controller and the audio got 100% usable. But, after boot into Fedora, like 20% of the times the computer was doing a very, very loud beep (from the left side). When booting to windows, no such a thing was happening. I deleted the files TIAS2781RCA4.bin and TAS2XXX38BB.bin and everything got to normal again: no beeps, terrible sound.

I switched to Ubuntu 23.10 just in case the audio was there fixed out of the box, but it was not the case. Still not the case either in Kernel 6.6.8 or 6.7.0rc7. Did anybody encounter any similar issues?

[Txordi00]

I did the same steps in Ubuntu (Kernel 6.6.8). I will be testing now whether this issue arises in Ubuntu as well.

[Txordi00]

After 3 restarts, the same happened in Ubuntu again...

[Txordi00]

After a reinstall of the BIOS, the issue seemed to disappear, but has again appeared. Could this be an issue with my particular device?

[Txordi00]

Looks like this is a known issue: https://bbs.archlinux.org/viewtopic.php?pid=2126441#p2126441, https://forums.lenovo.com/topic/findpost/2713/5210709/6201757.

Also what I've found on my Yoga - if I want to hibernate/resume keeping the sound working - I need to have snd_hda_scodec_tas2781_i2c and snd_hda_intel compiled as a module, and before

hibernation unload snd_hda_scodec_tas2781_i2c first, snd_hda_codec_realtek second and snd_hda_intel third. ( the order is extremely important - if you do reverse order you have a chance to boot up with exteremely loud noise ) - and load them back on resume in reverse order,

I don't know how to implement the solution but I leave it here, so that people will be aware of it.

[maxim317]

I think all happy owners of new lenovo laptops have the same problems. I am also ready to help in testing fixes.

[Txordi00]

I think all happy owners of new lenovo laptops have the same problems. I am also ready to help in testing fixes.

Thanks for the answer! I hope that Lenovo developers take note of our problems and help us getting this laptop up and running with Linux distros sooner than later...

[itea-dev]

@Txordi00

I have same model and I had the same issue.

To overcome this issue I use kernel 6.6.1 on Ubuntu 23.10. The loud sound may happen occasionally on boot after updating some packages but most of the time it works.

[mark-herbert42]

There are some new patches in kernel tree for tas2781 driver - so far they are applied on -next only, but with -next I did not have this loud sound anymore so hopefully the solution is found and will be in 6.8 kernel, and maybe even backported to 6.6LTS

[Txordi00]

There are some new patches in kernel tree for tas2781 driver - so far they are applied on -next only, but with -next I did not have this loud sound anymore so hopefully the solution is found and will be in 6.8 kernel, and maybe even backported to 6.6LTS

and what about the sound quality? Were bass amps working with these patches? Thanks!

[mark-herbert42]

perfectly. But you need firmware from Darin's repository - the mainstream firmware is still junk mixing left/right speaker. Also alsa-controller is still needed to control volume.

[mark-herbert42]

sound.txt

Here is the shell script I use to reload the modules in case if amps hangs and stop working. In case if you need it.

[Txordi00]

sound.txt

Here is the shell script I use to reload the modules in case if amps hangs and stop working. In case if you need it.

thanks!

[w0utert]

There are some new patches in kernel tree for tas2781 driver - so far they are applied on -next only, but with -next I did not have this loud sound anymore so hopefully the solution is found and will be in 6.8 kernel, and maybe even backported to 6.6LTS

Sadly, it seems 6.8 made things worse for me, and now I'm pretty much lost trying to figure out what's going on

Somewhere between 6.5 and 6.7 the combination of the kernel sound driver and linux-firmware for tas2781 automatically started to work for me, without doing anything I got great sound through all speakers and even the volume control was working for both LR and bass speakers. Again, I did not do anything to make this work. The only thing that was not working very well was suspending the laptop, the amplifiers would shut down and not get re-enabled most of the time, especially when suspending the laptop while sound was playing (they got re-enabled if that was the case).

Now, since last week I updated to 6.8.4 kernel and now everything is broken again, and I randomly get working speakers or not between reboots, but most of the time it doesn't work.

I tried copying Darin's modified firmware binaries (which were different from the installed ones as checked by md5sum), and on first reboot I did get some amplified sound but it sounded quite bad. Not as bad as without any amplfication, but not nearly as good as before with 6.6/6.7 kernel. Seems like these firmware files have bad acoustic calibration for this particular laptop or something.

Anyway these amplifier really are still a sh*tshow right now, it seems, I have no idea what's going on or how to debug and who to report to, the TI firmware guy seems have disappeared as well...

[mark-herbert42]

seems that there is some work going on - and there is a patch to fix tas2781 registers in sound git tree not landed to main kernel yet.

I use 6.9-rc3, with those patches applied and Darin's firmware - happy with the sound so far. Alsa-controller daemon is not needed anymore as the volume congtrol now is done directly by kernel drivers.

[w0utert]

Ah that’s good news, I saw these patches but it seemed like they were already merged into 6.8. Let’s see when 6.9 is out then…

I would recommend once it is out to revert the firmware files to the ones in linux-firmware by the way, and see if that combination also works. Because as I wrote, sound quality was decidedly worse than what I somehow had working with 6.7 even though all speakers are working & amplified with the patched firmware.