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Re: serial console puzzle
On Fri, Apr 30, 2021 at 05:04:34PM +0200, Manuel Bouyer wrote:
> On Fri, Apr 30, 2021 at 03:44:46PM +0100, Patrick Welche wrote:
> > In /boot.cfg:
> > menu=Boot normally:rndseed /var/db/entropy-file;consdev com0,57600;boot
> > # installboot -ve /dev/rsd0a
> > File system: /dev/rsd0a
> > Boot options: timeout 5, flags 0, speed 57600, ioaddr 0, console com0
> > Yet in dmesg:
> > com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, 1-byte FIFO
> > com1 at isa0 port 0x2f8-0x2ff irq 3: ns16550a, 1-byte FIFO
> > com1: console
> > (so I don't actually see anything)
> > (Wednesday's -current/amd64)
> > Thoughts?
> one possibility is that the bios has com0 and com1 swapped.
> In some case I had to explicitely set ioaddr with installboot to have
> the serial console working.
I should have said: according to the BIOS "COM A" is 0x3f8, and "COM B"
is 0x2f8, so they are the right way around.
(Of course UEFI is fine, and I get console output, but...)
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