Date: Wed, 26 May 2010 21:46:18 -0700 From: Garrett Cooper <yanefbsd@gmail.com> To: Mayo Jordanov <mayo@oyam.ca> Cc: remko@freebsd.org, freebsd-bugs@freebsd.org Subject: Re: kern/147082: [uart] Serial ports unusable Message-ID: <AANLkTiksnVef6o59_AV3fWls3atgy7BYjehEmfTl0qM2@mail.gmail.com> In-Reply-To: <7353B9CB-BAEF-4A7E-9C89-6B46227DF779@oyam.ca> References: <201005261942.o4QJgacx011479@freefall.freebsd.org> <008FD1A4-F1AB-4683-A3A6-6EAA3C0AECED@oyam.ca> <AANLkTil7Y_Yb500zXHilLvHlmpRfDMaJZP_UffNURKmk@mail.gmail.com> <7353B9CB-BAEF-4A7E-9C89-6B46227DF779@oyam.ca>
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On Wed, May 26, 2010 at 8:01 PM, Mayo Jordanov <mayo@oyam.ca> wrote: > > 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: >>> >>> On 2010-05-26, at 12:42 , remko@FreeBSD.org wrote: >>> >>>> Synopsis: [uart] Serial ports unusable >>>> >>>> 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 >>>> >>>> http://www.freebsd.org/cgi/query-pr.cgi?pr=3D147082 >>> >>> I'm gona re-reply here, to preserve the history. >>> >>>>>> How-To-Repeat: >>>>> 1) Edit /etc/ttys, do the ttyu0 line reads: >>>>> ttyu0 =A0 =A0 =A0 =A0"/usr/libexec/getty std.9600" =A0 vt100 =A0 on s= ecure >>>>> 2) kill -HUP 1 >>>>> 3) Try connecting to it with terminal application >>>> >>>> >>>> /etc/ttys >>>> console =A0 =A0"/usr/libexec/getty Pc" =A0 =A0 =A0 =A0 cons25 =A0on = =A0secure >>>> >>>> /boot/loader.conf >>>> console=3D"comconsole" >>>> >>>> That enabled serial access to my Soekris device running on FreeBSD8(PF= sense), it also works for several remote machines I have. >>>> >>>> Can you confirm that you have these settings in loader.conf and reboot= ed?! >>>> >>>> -- >>>> /"\ =A0 Best regards, =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0|= remko@FreeBSD.org >>>> \ / =A0 Remko Lodder =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0| remk= o@EFnet >>>> X =A0 =A0http://www.evilcoder.org/ =A0 =A0| >>>> / \ =A0 ASCII Ribbon Campaign =A0 =A0| Against HTML Mail and News >>> >>> test# cat /boot/loader.conf >>> console=3D"comconsole" >>> >>> looking at the /etc/ttys entry you pasted above, will that enable seria= l console? That looks like a regular console on the machine itself. >>> >>> 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 por= tion of the messages as nics are getting setup and then nothing). >>> >>> 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. >> >> =A0 =A0All of this is described in more grusome detail at >> http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole-= setup.html > > Unfortunately, the handbook does not help in this case. If there is a sol= ution to the problem I describe in the PR description in the handbook, plea= se 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 re= boot 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 tty= in as they are supposed to be? The comconsole bit is in the section of /etc/ttys in the beforementioned page. Details about debugging your connection is available here: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/term.html . What's the baud rate for your serial connection? The part about kill -HUP 1 not working sounds like a possible syscons/tty bug. Can you try killing init, then provide us with the wait state in ps/top for the relevant getty instance? Thanks! -Garrett
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