[SOLVED] screen ttyUSB remotely over ssh showing garbage

[dony71]

I have asus merlin router rt-ac68u running entware.
I manage to install screen and cp210x driver for USB serial device.
The intention is to read serial dump remotely by using ssh.
However after executing "screen /dev/ttyUSB0 115200" in ssh session,
I can only see garbage in ssh session.
No garbage if running putty locally from windows machine, tells me nothing wrong with the hardware. Anybody give me hints anything I'm missing ?

 

[dony71]

I try minicom and picocom, also show only garbage
Could it be cp210x driver broken?

 

[dony71]

I try latest usb merlin Firmware Version: 384.14 and still have problem
Really nobody try serial console?

 

[dony71]

Here is the screen short how the garbage looks like

 

[dony71]

i try other profilic pl2303 usb-to-serial
it's working properly using pl2303.ko
so based on this finding, confirm cp210x.ko driver is broken
or maybe this cp210x.ko driver does not support cp2104 chip?
any developer knows about this?

 

[dony71]

yayyy .... it's working now
I downlod driver source code directly from siliconlab and recompile
Attached is c source code which fix the issue