No sound in Max Lumi 2

[richard.black]

Hey all!

I have rooted my Max Lumi 2 using APatch (I just wanted to try APatch), but I don't have sound output whatsover, not even using Bluetooth headphones and speakers. I tried:
- changing everything in the default UI
- changing everything in Bluetooth Volume Manager app
(trust me, i tried all the settings i saw)

What could be the problem? Anyone know the fix?

[richard.black]

'AudioServerDied', says dumpsys audio

[Renate]

Probably a mismatch in kernel module and kernel.
Does the WiFi work? Does a Bluetooth keyboard work?

[richard.black]

Does the WiFi work?

It does.

Does a Bluetooth keyboard work?

Unfortunately, I don't own such keyboard to test.

Probably a mismatch in kernel module and kernel.

I haven't changed either one, but you must know better. Could you elaborate?

I did fix that AudioServerDied issue by just allowing audioserver to access the directory it need by changing selinux policy
(with the help of Gemini AI, of course)

In a unique scenario when my laptop and the tablet is connected to a same Bluetooth speaker, it pauses my laptop's content to play, but no sound output. I noticed that it plays audio, but no output is produced by the its speaker or Bluetoooth speaker. Yes, a device is detected and firmware is present 'bengal-snd...something'

[Renate]

Did you install Magisk?

[richard.black]

I installed APatch https://apatch.dev/.

[Renate]

Was the boot image that you modified taken directly off your device or taken from an update or somewhere else?

[richard.black]

Of course the boot image was taken from my device, which you taught me last year.
It was rooted correctly. The device works perfectly fine otherwise.

I can confidently say that the driver is present and processing audio data.

I tried to change tinymix switches, but no luck.

53* * * BOOL* * 1* * * *DEC0_BCS Switch* * * * * * * * * * * * * Off
102* * *BOOL* * 1* * * *RX_COMP1 Switch* * * * * * * * * * * * * Off
103* * *BOOL* * 1* * * *RX_COMP2 Switch* * * * * * * * * * * * * Off
154* * *BOOL* * 1* * * *SLIMBUS_DL_HL Switch* * * * * * * * * * *Off
155* * *BOOL* * 1* * * *SLIMBUS1_DL_HL Switch* * * * * * * * * * Off
156* * *BOOL* * 1* * * *SLIMBUS3_DL_HL Switch* * * * * * * * * * Off
157* * *BOOL* * 1* * * *SLIMBUS4_DL_HL Switch* * * * * * * * * * Off
158* * *BOOL* * 1* * * *SLIMBUS6_DL_HL Switch* * * * * * * * * * Off
159* * *BOOL* * 1* * * *PCM_RX_DL_HL Switch* * * * * * * * * * * Off
160* * *BOOL* * 1* * * *SCO_SLIM7_DL_HL Switch* * * * * * * * * *Off
161* * *BOOL* * 1* * * *HFP_INT_UL_HL Switch* * * * * * * * * * *Off
162* * *BOOL* * 1* * * *HFP_SLIM7_UL_HL Switch* * * * * * * * * *Off
163* * *BOOL* * 1* * * *USB_DL_HL Switch* * * * * * * * * * * * *Off
164* * *BOOL* * 1* * * *A2DP_SLIM7_UL_HL Switch* * * * * * * * * Off
165* * *BOOL* * 1* * * *WSA_CDC_DMA_RX_0_DL_HL Switch* * * * * * Off
166* * *BOOL* * 1* * * *RX_CDC_DMA_RX_0_DL_HL Switch* * * * * * *Off
167* * *BOOL* * 1* * * *RX_CDC_DMA_RX_1_DL_HL Switch* * * * * * *Off
1527* * BOOL* * 1* * * *HPHL_COMP Switch* * * * * * * * * * * * *Off
1528* * BOOL* * 1* * * *HPHR_COMP Switch* * * * * * * * * * * * *Off
1529* * BOOL* * 1* * * *ONYX_FSA2275_SEL Switch* * * * * * * * * Off
1530* * BOOL* * 1* * * *ONYX_FSA2275_MUTE Switch* * * * * * * * *Off
1531* * BOOL* * 1* * * *ONYX_AW_SpkrL_MODE Switch* * * * * * * * Off
1532* * BOOL* * 1* * * *ONYX_AW_SpkrR_MODE Switch* * * * * * * * Off
2492* * BOOL* * 1* * * *ADC1_MIXER Switch* * * * * * * * * * * * Off
2493* * BOOL* * 1* * * *ADC2_MIXER Switch* * * * * * * * * * * * Off
2495* * BOOL* * 1* * * *EAR_RDAC Switch* * * * * * * * * * * * * Off
2496* * BOOL* * 1* * * *AUX_RDAC Switch* * * * * * * * * * * * * Off
2497* * BOOL* * 1* * * *HPHL_RDAC Switch* * * * * * * * * * * * *Off
2498* * BOOL* * 1* * * *HPHR_RDAC Switch* * * * * * * * * * * * *Off

I tried to change 53, 154, 164, 166-167, 1527-1532, 2497-2498.

If you think something will work, I will test it. Now, I even learned how to make Magisk modules.

[Renate]

Well, if you have a BT headphone and it has buttons can you see the buttons in UsbMode.apk?

OTOH, they screwed around a lot with BT keys and they might be filtered already.

[richard.black]

UsbMode is such an awesome app, but unfortunately I can't see the buttons.
(yes, I can see the touch events and USB keyboards)

[Renate]

I don't know.
The last time I played with audio was when it was using ALSA.
Is it still using that?
There were many utilities like aplay for configuring and testing.
If some part of Android is crashing you're going to have to quote the logcat.
(Don't just post some enormous file, find where the interesting stuff is happening.)

[richard.black]

It's just a small inconvenience honestly, I can live with that.
If I ever did fix it in the future, I'll post the fix on here.