Hi,
I have a problem with ch341 USB serial adapter, I tried to search on forum and on internet without luck.
I'm runnig a Linux helios4 4.19.84-mvebu #19.11.3 on an helios4 board, off course.
When I connect a CH341 device, like NodeMCU, serial adapter or an Arduino Mega Pro Mini, etc, for the first time or I boot the system with the device connected, it is enumerated correctly and I have it listed on dmesg and I give a /dev/ttyUSBx, but if I disconnect and reconnect it, the system, sometimes at the first time, sometimes after few times, give me these errors and didn't detects the usb adapter until the next boot.
What's wrong ? What can I do, other usb device, link stick, works fine.
Sotty for my english, I hope that my message is comprensible.
Bye, Carlo
[dom gen 12 23:28:15 2020] usb 2-1: new full-speed USB device number 7 using xhci-hcd
[dom gen 12 23:28:15 2020] usb 2-1: New USB device found, idVendor=1a86, idProduct=5523, bcdDevice= 3.04
[dom gen 12 23:28:15 2020] usb 2-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[dom gen 12 23:28:15 2020] ch341 2-1:1.0: ch341-uart converter detected
[dom gen 12 23:28:15 2020] usb 2-1: ch341-uart converter now attached to ttyUSB0
[dom gen 12 23:28:26 2020] usb 2-1: USB disconnect, device number 7
[dom gen 12 23:28:26 2020] usb 2-1: ch341_read_int_callback - usb_submit_urb failed: -19
[dom gen 12 23:28:31 2020] xhci-hcd f10f0000.usb3: xHCI host not responding to stop endpoint command.
[dom gen 12 23:28:31 2020] xhci-hcd f10f0000.usb3: xHCI host controller not responding, assume dead
[dom gen 12 23:28:31 2020] xhci-hcd f10f0000.usb3: HC died; cleaning up
[dom gen 12 23:28:31 2020] usb 2-1: failed to send control message: -19
[dom gen 12 23:28:31 2020] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[dom gen 12 23:28:31 2020] ch341 2-1:1.0: device disconnected