Date: Tue, 20 Sep 2005 21:57:13 +0300 From: Ruslan Ermilov <ru@FreeBSD.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: current@FreeBSD.org Subject: Re: serial ttys broken? Message-ID: <20050920185713.GA3316@ip.net.ua> In-Reply-To: <6136.1127217196@critter.freebsd.dk> References: <20050920110023.GA468@ip.net.ua> <6136.1127217196@critter.freebsd.dk>
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JFYI, everyone I've asked (several people now) can easily
reproduce this: when serial console is NOT configured,
getty doesn't work on ttyd0, but it appears to work on
cuad0! The same holds true for uart(4) instead of sio(4).
Odd.
Also, and I think this is related, resetting console
via TIOCCONS(0) on /dev/console appears to be broken
when serial console is configured.
In my setup, i.e. when booted WITHOUT serial console
configured (no -h in boot2, no console=3Dcomconsole in
loader, etc.) but with serial port serving as a
potential console (i.e., hint...flags=3D0x10), doing the
following blocks:
: hammer# conscontrol=20
: Configured: consolectl
: Available: ttyd0,consolectl
: Muting: off
: hammer# conscontrol add ttyd0
: Configured: ttyd0,consolectl
: Available: ttyd0,consolectl
: Muting: off
: hammer# conscontrol set /dev/ttyv1
: Configured: ttyd0,consolectl
: Available: ttyd0,consolectl
: Muting: off
: hammer# conscontrol unset
: load: 0.03 cmd: conscontrol 1397 [ttydcd] 0.00u 0.00s 0% 660k
: load: 0.03 cmd: conscontrol 1397 [ttydcd] 0.00u 0.00s 0% 660k
: load: 0.03 cmd: conscontrol 1397 [ttydcd] 0.00u 0.00s 0% 660k
: ^C
Removing ttyd0 from console list leads to a success with
TIOCCONS(0) on /dev/console:
: hammer# conscontrol delete ttyd0
: Configured: consolectl
: Available: ttyd0,consolectl
: Muting: off
: hammer# conscontrol unset
: Configured: consolectl
: Available: ttyd0,consolectl
: Muting: off
> I won't have time to look at it for the next several weeks
> (unless it happens on my machine and forces me to handle it).
>=20
I'm not urging you, but not having getty working over serial
is a bit annoying. And I'm pretty sure you can easily
reproduce this on any of your machines:
1. Boot with GENERIC that has sio0 as potential console
but without serial console.
2. Try to make getty over ttyd0 working, as in default
/etc/ttys file.
Can you at least please try and confirm it works for you,
or not?
Cheers,
--=20
Ruslan Ermilov
ru@FreeBSD.org
FreeBSD committer
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