/dev/ttyUSB0 doesn't appear for an FTDI on fresh Ubuntu 22.04
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Ubuntu |
New
|
Undecided
|
Unassigned |
Bug Description
Hi all,
This problem appeared on a freshly installed Ubuntu 22.04 desktop.
When I'm attaching a ftdi device into usb everything looks great but there's no /dev/ttyUSB0 file. Looks like it's created and then disappears immediately. I tried to remove brltty package (as some recommends https:/
The same ftdi device works on older Ubuntu version w/o any problems. So hardware is ok.
I'm having this in syslog:
Jun 1 16:58:09 qgs-comp kernel: [ 538.642086] usb 2-1.5: new full-speed USB device number 5 using ehci-pci
Jun 1 16:58:10 qgs-comp kernel: [ 538.756437] usb 2-1.5: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00
Jun 1 16:58:10 qgs-comp kernel: [ 538.756445] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jun 1 16:58:10 qgs-comp kernel: [ 538.756448] usb 2-1.5: Product: USB Serial
Jun 1 16:58:10 qgs-comp kernel: [ 538.756450] usb 2-1.5: Manufacturer: FTDI
Jun 1 16:58:10 qgs-comp kernel: [ 538.756452] usb 2-1.5: SerialNumber: FT0KKBIF
Jun 1 16:58:10 qgs-comp kernel: [ 538.759677] ftdi_sio 2-1.5:1.0: FTDI USB Serial Device converter detected
Jun 1 16:58:10 qgs-comp kernel: [ 538.759713] usb 2-1.5: Detected FT232RL
Jun 1 16:58:10 qgs-comp kernel: [ 538.760546] usb 2-1.5: FTDI USB Serial Device converter now attached to ttyUSB0
Jun 1 16:58:01 qgs-comp colord-sane: message repeated 2 times: [ io/hpmud/musb.c 2101: Invalid usb_open: Permission denied]
Jun 1 16:58:10 qgs-comp mtp-probe: checking bus 2, device 5: "/sys/devices/
Jun 1 16:58:10 qgs-comp mtp-probe: bus: 2, device: 5 was not an MTP device
Jun 1 16:58:10 qgs-comp systemd-
Jun 1 16:58:10 qgs-comp snapd[942]: hotplug.go:199: hotplug device add event ignored, enable experimental.
Jun 1 16:58:10 qgs-comp mtp-probe: checking bus 2, device 5: "/sys/devices/
Jun 1 16:58:10 qgs-comp mtp-probe: bus: 2, device: 5 was not an MTP device
Jun 1 16:58:10 qgs-comp colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied
I noticed this line:
Jun 1 16:58:10 qgs-comp systemd-
Why is it happening? There's no /dev/ttyUSB0 neither before nor after I attach ftdi device to a USB port.
Let's take a look in /dev/serial folder:
cd /dev/serial ; ls -LR
.:
by-id
by-path
./by-id:
ls: cannot access './by-id/
usb-FTDI_
./by-path:
ls: cannot access './by-path/
pci-0000:
So the folders and links are there but there's no /dev/ttyUSB0 file the links point to.
summary: |
- /dev/ttyUSB0 file disappears on Ubuntu 22.04 + /dev/ttyUSB0 doesn't appear (fresh Ubuntu 22.04) |
summary: |
- /dev/ttyUSB0 doesn't appear (fresh Ubuntu 22.04) + /dev/ttyUSB0 doesn't appear for an FTDI (fresh Ubuntu 22.04) |
summary: |
- /dev/ttyUSB0 doesn't appear for an FTDI (fresh Ubuntu 22.04) + /dev/ttyUSB0 doesn't appear for an FTDI on fresh Ubuntu 22.04 |
description: | updated |
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