Linux Mint device driver issue?

Plug int he digirig, it’s discovered:
1431.841247] usb 3-2.2: new full-speed USB device number 8 using ehci-pci
[ 1431.960526] usb 3-2.2: New USB device found, idVendor=10c4, idProduct=ea60, bcdDevice= 1.00
[ 1431.960533] usb 3-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1431.960536] usb 3-2.2: Product: CP2102N USB to UART Bridge Controller
[ 1431.960538] usb 3-2.2: Manufacturer: Silicon Labs
[ 1431.960540] usb 3-2.2: SerialNumber: 34ae09c19fcaeb11a5e18b561d69213e
[ 1431.960914] cp210x 3-2.2:1.0: cp210x converter detected
[ 1431.962794] usb 3-2.2: cp210x converter now attached to ttyUSB0

AS myself (non-root) the device always shows busy:
/usr/local/bin/rigctl -r /dev/ttyUSB0 -m 1035 -s 38400 -vvvvv
rigctl Hamlib 4.6~git May 11 04:27:40Z 2023 SHA=bdecc7 64-bit
Report bugs to

rig_check_rig_caps: p1=0x7efd0b15db00, p2=0x7efd0b164080, rig_model=0x7efd0b15db00, macro_name=0x7efd0b164080
yaesu: initrigs4_yaesu called
rig_init: rig_model=Yaesu FT-991 20230510.15
rig_init: rig has VFO_A
rig_init: rig has VFO_B
rig_init: rig has VFO_MEM
ft991_init called, version 20230510.15
1:newcat.c(466):newcat_init entered
1:newcat.c(507):newcat_init returning(0)
1:rig.c(830):rig_open entered
rig_settings_get_path: path=/home/rralphs/.config/hamlib_settings
rig_settings_load_all: settings_file (/home/rralphs/.config/hamlib_settings): No such file or directory
rig_open: cwd=/home/rralphs
rig_open: /home/rralphs/hamlib_settings does not exist
rig_open: async_data_enable=1, async_data_supported=0
serial_open: /dev/ttyUSB0
serial_open(230): open failed#1
serial_open(230): open failed#2
serial_open(230): open failed#3
serial_open(230): open failed#4
serial_open: Unable to open /dev/ttyUSB0 - Device or resource busy
port_open: serial_open(/dev/ttyUSB0) status=-6, err=Device or resource busy
rig_open: rs->comm_state==0?=0
1:rig.c(1036):rig_open returning(-6) IO error

Have done all the obvious stuff, I am in group dialout, removed brltty.
As root device will open but IO times out which I should have to run as root and my be related.
Seems to be a device driver issue?

Randy KB0NAV

Maybe something else is using /dev/ttyUSB0. There were reports of gpsd grabbing the serial port.

You are correct, stopping gpsd allows non-root users to open.

Tried setting USBAUTO to false but that makes gpsd not function.

Maybe there is a way to explicitly point gpsd to a specific device? USBAUTO set to false sounds like there must be some manual setting.

I’m not into Mint/ Linux as much as some, but somewhere I found I needed to add myself to netdev, audio and dialout. So “adduser name netdev”,
“adduser name audio”, and “adduser name dialout”. This was true no matter what the interface, whether SignaLinkUSB DIGIRIG or the USB interface on the radio. I had been looking and couldn’t find the original source so I went back to a post I had made on HTH 73, Rob