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Date:      Wed, 26 May 2010 20:01:47 -0700
From:      Mayo Jordanov <mayo@oyam.ca>
To:        Garrett Cooper <yanefbsd@gmail.com>
Cc:        remko@freebsd.org, freebsd-bugs@freebsd.org
Subject:   Re: kern/147082: [uart] Serial ports unusable
Message-ID:  <7353B9CB-BAEF-4A7E-9C89-6B46227DF779@oyam.ca>
In-Reply-To: <AANLkTil7Y_Yb500zXHilLvHlmpRfDMaJZP_UffNURKmk@mail.gmail.com>
References:  <201005261942.o4QJgacx011479@freefall.freebsd.org> <008FD1A4-F1AB-4683-A3A6-6EAA3C0AECED@oyam.ca> <AANLkTil7Y_Yb500zXHilLvHlmpRfDMaJZP_UffNURKmk@mail.gmail.com>

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On 2010-05-26, at 19:34 , Garrett Cooper wrote:

> On Wed, May 26, 2010 at 6:42 PM, Mayo Jordanov <mayo@oyam.ca> wrote:
>>=20
>> On 2010-05-26, at 12:42 , remko@FreeBSD.org wrote:
>>=20
>>> Synopsis: [uart] Serial ports unusable
>>>=20
>>> State-Changed-From-To: open->feedback
>>> State-Changed-By: remko
>>> State-Changed-When: Wed May 26 19:42:36 UTC 2010
>>> State-Changed-Why:
>>> I send my working serial line to Mayo, set status to feedback
>>>=20
>>> http://www.freebsd.org/cgi/query-pr.cgi?pr=3D147082
>>=20
>> I'm gona re-reply here, to preserve the history.
>>=20
>>>>> How-To-Repeat:
>>>> 1) Edit /etc/ttys, do the ttyu0 line reads:
>>>> ttyu0        "/usr/libexec/getty std.9600"   vt100   on secure
>>>> 2) kill -HUP 1
>>>> 3) Try connecting to it with terminal application
>>>=20
>>>=20
>>> /etc/ttys
>>> console    "/usr/libexec/getty Pc"         cons25  on  secure
>>>=20
>>> /boot/loader.conf
>>> console=3D"comconsole"
>>>=20
>>> That enabled serial access to my Soekris device running on =
FreeBSD8(PFsense), it also works for several remote machines I have.
>>>=20
>>> Can you confirm that you have these settings in loader.conf and =
rebooted?!
>>>=20
>>> --
>>> /"\   Best regards,                        | remko@FreeBSD.org
>>> \ /   Remko Lodder                      | remko@EFnet
>>> X    http://www.evilcoder.org/    |
>>> / \   ASCII Ribbon Campaign    | Against HTML Mail and News
>>=20
>> test# cat /boot/loader.conf
>> console=3D"comconsole"
>>=20
>> looking at the /etc/ttys entry you pasted above, will that enable =
serial console? That looks like a regular console on the machine itself.
>>=20
>> I have rebooted numerous times, and I do get the kernel messages =
during boot on serial up to the point where getty starts (presumably... =
I see portion of the messages as nics are getting setup and then =
nothing).
>>=20
>> I have some machines where serial works fine, but I have some =
machines where it doesn't and behaves the same way as described above. =
If necessary, I can provide access to a troublesome machine.
>=20
>    All of this is described in more grusome detail at
> =
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole-se=
tup.html
> .
> HTH,
> -Garrett

Unfortunately, the handbook does not help in this case. If there is a =
solution to the problem I describe in the PR description in the =
handbook, please be so kind and point it out to me, because I must be =
blind.

Also, why do the gettys get stuck and I have to kill them manually (or =
reboot because they can't be killed) to reflect changes to /etc/ttys =
instead of simple `kill -HUP 1`? I've never ever had to do it manually =
in previous FreeBSD installations/versions. Why are they stuck in ttydtd =
and not in ttyin as they are supposed to be?

Thanks,
mayo





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