Wow, Graham, that was it -- brltty! "brltty accessibility service for blind people that is installed in Ubuntu and Ubuntu derivatives (Mint etc.) by default and have priority over serial devices plugged into the system later. Simply disable or remove this service." I removed it, plugged in the cable, it connected, and stayed connected. Opened CHIRP, connected to ttyUSB0 port, cloned my radio down. Problem solved!
Thanks very much!
*________________________*
*Greg Beyer greg@beyerusa.net*
------------------------------------------------------------------------ *From:* Graham Whaley graham.whaley@gmail.com *Sent:* Monday, January 13, 2025 at 1:43 PM *To:* CHIRP users list *Cc:* Gregory Beyer *Subject:* [users] Trouble with Linux USB port
It looks like there might be an app/service already running that might be causing the disconnect - see https://askubuntu.com/questions/1454633/dev-ttyusb0-device-connects-then-is-...
There are some hints on that page on how to disable that service afaict.
Graham
On 13 Jan 2025, at 18:32, Gregory Beyer via Users users@lists.chirpmyradio.com wrote:
usbfs: interface 0 claimed by ch341 while 'brltty' sets config #1