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#1 2021-09-01 10:37:53

JanErik
Member
Registered: 2018-01-08
Posts: 19

Kernel CH341 driver issue (Arduino, ESP8266)

Came across this issue when trying to load firmware to my ESP8266;
https://forum.manjaro.org/t/bugfixing-i … gfix/80725
https://forum.manjaro.org/t/manjaro-21- … re/79712/2

Guessing it will be fixed upstreams soon but FYI.

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#2 2021-10-11 18:40:45

frojnd
Member
Registered: 2008-09-20
Posts: 125

Re: Kernel CH341 driver issue (Arduino, ESP8266)

Ha, just upgraded and now I can't connect to esp8266:

22298.327787] usb 3-2: new full-speed USB device number 5 using xhci_hcd
[22298.468987] usb 3-2: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice= 2.64
[22298.469000] usb 3-2: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[22298.469004] usb 3-2: Product: USB Serial
[22298.470131] ch341 3-2:1.0: ch341-uart converter detected
[22298.470907] usb 3-2: ch341-uart converter now attached to ttyUSB0
[22299.080767] audit: type=1130 audit(1633977478.369:161): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=brltty-device@sys-devices-pci0000:00-0000:00:14.0-usb3-3\x2d2 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[22299.132543] audit: type=1130 audit(1633977478.423:162): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=brltty@-sys-devices-pci0000:00-0000:00:14.0-usb3-3\x2d2 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[22299.136190] usb 3-2: usbfs: interface 0 claimed by ch341 while 'brltty' sets config #1
[22299.136758] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[22299.136780] ch341 3-2:1.0: device disconnected

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#3 2021-10-12 17:52:05

frojnd
Member
Registered: 2008-09-20
Posts: 125

Re: Kernel CH341 driver issue (Arduino, ESP8266)

Yesterday didn't paste the last line which was the most important on finding the solution:

[  407.496252] input: BRLTTY 6.4 Linux Screen Driver Keyboard as /devices/virtual/input/input24

https://unix.stackexchange.com/question … erter-chip

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