Date: Fri, 22 May 2026 10:04:34 -0700 From: Steve Rikli <sr@genyosha.net> To: Polarian <polarian@polarian.dev> Cc: questions@freebsd.org Subject: Re: Terminal server with consumer hardware Message-ID: <ahCMovnPJ6qjU9Nx@dragon.home.genyosha.net> In-Reply-To: <20260522154731.4cad8798@Hydrogen> References: <20260521233422.001d364f@Hydrogen> <ca6a4d16-9918-4f8d-a198-4f09ff8bba46@dorfdsl.de> <20260522154731.4cad8798@Hydrogen>
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On Fri, May 22, 2026 at 03:47:31PM +0100, Polarian wrote: > ... > However I want to get serial working, full stop :) > > I don't want to give up on it, so does anyone have an idea how to get > this working? It's been quite a while since I looked at this, but AFAIK FreeBSD can't make use of USB serial devices for the system console. I.e. there must be an actual serial port, recognized by the bios and presented to the OS. Something like this, if found: $ dmesg | grep ^uart[0-9]: uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0 uart0: console (115200,n,8,1) The most I was able to work out with a USB serial device (e.g. on an old Intel NUC without a native serial port) was starting a login: getty on ttyU*, but that's only a terminal, not a system console. Similar situation with GRUB on Linux as well, btw. IIRC I was able to send some boot output to ttyU* there, but it wasn't usable as an interactive console during GRUB. IMO it'd be great if there were more support for USB serial devices as system console, since modern boards often don't have a serial port these days. I expect it's a tricky problem, doing console input-output to removable devices early in loader stages. Cheers, sr.home | help
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