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)