Phone suddenly unusable

[TRS-80]

Thanks for suggestions guise.  I do agree I need to narrow it down / proceed in a controlled manner.

I also think the "biggest" problem is probably to rule out physical pin damage.  To that end, I still have my old MVNO SIM, maybe I just purchase some more time there and very carefully swap the SIM back and test.

Last night a couple people in IRC made some other suggestions, one of which was to check dmesg.  So this morning I did that and here is the (full) result: https://bpa.st/5PEQ [0]

Now my phone has been on for some time, so that's kind of long dmesg output, but the following things stand out (to me anyway):

Code:

[   12.650023] sun6i-csi 1cb0000.csi: Direct firmware load for gc2145-init.bin failed with error -2
[   12.659533] gc2145 4-003c: Failed to read firmware gc2145-init.bin, continuing anyway...

[   34.133889] usbserial: USB Serial support registered for GSM modem (1-port)
[   34.145517] option 2-1:1.0: GSM modem (1-port) converter detected
[   34.153836] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[   34.164035] option 2-1:1.1: GSM modem (1-port) converter detected
[   34.170849] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
[   34.180898] option 2-1:1.2: GSM modem (1-port) converter detected
[   34.187738] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
[   34.196878] option 2-1:1.3: GSM modem (1-port) converter detected
[   34.203768] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3

[   52.349935] sun6i-csi 1cb0000.csi: Direct firmware load for gc2145-init.bin failed with error -2
[   52.364006] gc2145 4-003c: Failed to read firmware gc2145-init.bin, continuing anyway...

[   53.263836] sun6i-csi 1cb0000.csi: Direct firmware load for gc2145-init.bin failed with error -2
[   53.281811] gc2145 4-003c: Failed to read firmware gc2145-init.bin, continuing anyway...

[   53.626396] sun6i-csi 1cb0000.csi: Direct firmware load for gc2145-init.bin failed with error -2
[   53.635312] gc2145 4-003c: Failed to read firmware gc2145-init.bin, continuing anyway...

[   53.973638] sun6i-csi 1cb0000.csi: Direct firmware load for gc2145-init.bin failed with error -2
[   53.982527] gc2145 4-003c: Failed to read firmware gc2145-init.bin, continuing anyway...

[31348.065063] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[31348.077120] option 2-1:1.0: device disconnected
[31348.090522] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[31348.099063] option 2-1:1.1: device disconnected
[31348.113171] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[31348.128678] option 2-1:1.2: device disconnected
[31348.135252] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[31348.143589] option 2-1:1.3: device disconnected
[31348.148647] qmi_wwan 2-1:1.4 wwan0: unregister 'qmi_wwan' usb-1c1b000.usb-1, WWAN/QMI device
[31348.480568] usb 2-1: new high-speed USB device number 3 using ehci-platform
[31348.658116] usb 2-1: New USB device found, idVendor=2c7c, idProduct=0125, bcdDevice= 3.18
[31348.666446] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[31348.673644] usb 2-1: Product: EG25-G
[31348.677295] usb 2-1: Manufacturer: Quectel
[31348.686921] option 2-1:1.0: GSM modem (1-port) converter detected
[31348.694137] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[31348.705973] option 2-1:1.1: GSM modem (1-port) converter detected
[31348.716434] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
[31348.724083] option 2-1:1.2: GSM modem (1-port) converter detected
[31348.733276] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
[31348.740991] option 2-1:1.3: GSM modem (1-port) converter detected
[31348.751059] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3

(above block repeats 10+ times)

It seems to me like the modem keeps dropping out maybe? Perhaps biktorgj improved firmware might help here?

Interestingly, I did make some phone calls just now (which also dropped) but this happened after 77599. and nothing was logged in dmesg for those. I did also notice that 4G stayed on while on the phone, so I guess VoLTE is working after all. I had not changed anything since last reports, so that happened on its own.

[0] That paste will only be up for a week or whatever, but I also saved it to a text file locally. If some dev comes along later looking for it, please do contact me.