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WG0A > LINUX 30.09.22 17:56l 59 Lines 2351 Bytes #999 (0) @ WW
BID : 22840_WG0A
Read: GUEST
Subj: Re: Hard config USB ports Ubuntu 18, 20 etc?
Path: IW8PGT<IZ3LSV<IQ2LB<IR2UFV<SK0BO<SM0YOS<VE3CGR<WG0A
Sent: 220930/1554Z 22840@WG0A.#MSP.MN.USA.NOAM LinBPQ6.0.23
Linux will generally generate a by-id link to the USB devices. I reference
those paths in my direwolf configs and that's been working well for me, even
when the USB devices are disconnected and re-connected.
For example, looking at my direwolf Pi, I have these devices in the /dev/serial/by-id/
directory.
# ls -l /dev/serial/by-id/
total 0
lrwxrwxrwx 1 root root 13 Sep 25 08:19 usb-Silicon_Labs_CP2105_Dual_USB_to_UART_Bridge_Controller_00DE37AC-if00-port0 -> ../../ttyUSB1
lrwxrwxrwx 1 root root 13 Sep 25 08:19 usb-Silicon_Labs_CP2105_Dual_USB_to_UART_Bridge_Controller_00DE37AC-if01-port0 -> ../../ttyUSB2
lrwxrwxrwx 1 root root 13 Sep 25 08:19 usb-Silicon_Labs_West_Mountain_Radio_RIGblaster_Plus_II_f7d1a484-if00-port0 -> ../../ttyUSB0
The top two devices are my FT-991A, and the bottom on is an old RigBlaster hooked up to my VHF rig.
Hope that helps,
73 Brent - WG0A
Original Message
> MID: 53729_VE1MPF
> Date: 2022/09/30 13:31
> Type: Bulletin
> From: VE1AJF@VE1MPF.#MCTN.NB.CAN.NOAM
> To: LINUX@WW
> Subject: Hard config USB ports Ubuntu 18, 20 etc?
> Mbo: W0ARP
> Content-Type: text/plain
> Content-Transfer-Encoding: 8bit
> Body: 1162
>
> R:220930/1331Z 11965@N3HYM.MD.USA.NOAM BPQ6.0.23
> R:220930/1331Z 32089@W0ARP.#NCO.CO.USA.NOAM LinBPQ6.0.22
> R:220930/1331Z @:VE2PKT.#TRV.QC.CAN.NOAM #:5949 $:53729_VE1MPF
> R:220930/1331Z 53729@VE1MPF.#MCTN.NB.CAN.NOAM BPQ6.0.21
>
> Hello Linux Guru's wherever you may be :)
> I'd like to see if I can solve an irritation involving USB port
> reassignment which has plagued various, usually USB-Serial adapter
> setups whereby occasionally, the ttyUSB port gets reassigned to a
> different number....or a different physical port. Typically I'm
> using a couple of different USB-Serial adapters with APRS or other
> programs and abruptly I'm no longer talking to the serial hardware
> and checking dmesg and lsusb I find that the adapter cable has disconnected
> and reconnected (typical sketchy USB connectors I assume). This happens
> usually in my mobile setups so it's likely connector wiggling is the
> root cause. I would like to know if there's a config setting with either
> Ubuuntu 18.04, 20.04LTS that can hard-configure a ttyUSB assignment to a
> physical port.....and how to implement that.
>
> What are you tinkering with?
>
>
> 73 - Gord Skiffington
> VE1AJF
>
>
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