Raspberry Pi OS • USB: ch341 appears and disappears periodically

Hello...

i try to connect a esp32 board with USB to serial converter ch341 to a RPi4. It appears and disappears every one second. What do i do wrong?

Thank you very much...

PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"

Linux workbench 6.6.20+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.6.20-1+rpt1 (2024-03-07) aarch64 GNU/Linux


[ 460.644523] usb 1-1.3: new full-speed USB device number 8 using xhci_hcd
[ 460.750661] usb 1-1.3: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice=81.32
[ 460.750685] usb 1-1.3: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[ 460.750694] usb 1-1.3: Product: USB Serial
[ 460.755373] ch341 1-1.3:1.0: ch341-uart converter detected
[ 460.764924] usb 1-1.3: ch341-uart converter now attached to ttyUSB0
[ 461.439648] usb 1-1.3: USB disconnect, device number 8
[ 461.439991] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[ 461.440037] ch341 1-1.3:1.0: device disconnected
[ 461.664501] usb 1-1.3: new full-speed USB device number 9 using xhci_hcd
[ 461.774669] usb 1-1.3: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice=81.32
[ 461.774686] usb 1-1.3: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[ 461.774690] usb 1-1.3: Product: USB Serial
[ 461.777453] ch341 1-1.3:1.0: ch341-uart converter detected
[ 461.782986] usb 1-1.3: ch341-uart converter now attached to ttyUSB0
[ 462.207233] usb 1-1.3: USB disconnect, device number 9
[ 462.207559] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0
[ 462.207606] ch341 1-1.3:1.0: device disconnected

processor: 0
BogoMIPS: 108.00
Features: fp asimd evtstrm crc32 cpuid
CPU implementer: 0x41
CPU architecture: 8
CPU variant: 0x0
CPU part: 0xd08
CPU revision: 3

processor: 1
BogoMIPS: 108.00
Features: fp asimd evtstrm crc32 cpuid
CPU implementer: 0x41
CPU architecture: 8
CPU variant: 0x0
CPU part: 0xd08
CPU revision: 3

processor: 2
BogoMIPS: 108.00
Features: fp asimd evtstrm crc32 cpuid
CPU implementer: 0x41
CPU architecture: 8
CPU variant: 0x0
CPU part: 0xd08
CPU revision: 3

processor: 3
BogoMIPS: 108.00
Features: fp asimd evtstrm crc32 cpuid
CPU implementer: 0x41
CPU architecture: 8
CPU variant: 0x0
CPU part: 0xd08
CPU revision: 3

Revision: d03115
Serial: 100000008b3174ea
Model: Raspberry Pi 4 Model B Rev 1.5

Statistics: Posted by wangenkuesse — Sun Mar 24, 2024 7:43 pm

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