linux-kernel - Re: tty TTY

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Message-ID: <4F04B957.3000408@suse.cz>
Date:	Wed, 04 Jan 2012 21:40:55 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	markh@...pro.net
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linux-kernel <linux-kernel@...r.kernel.org>,
	Mark Hounschell <dmarkh@....rr.com>,
	Jiri Slaby <jirislaby@...il.com>
Subject: Re: tty  TTY_HUPPED anomaly

On 01/04/2012 09:35 PM, Mark Hounschell wrote:
> On 01/04/2012 03:28 PM, Jiri Slaby wrote:
>> On 01/04/2012 07:59 PM, Mark Hounschell wrote:
>>>> I would guess (given the distro change is the trigger) that you've
>>>> got a
>>>> SuSE problem not a kernel one. The kernel behaviour and code looks
>>>> correct. My guess therefore is that newer SuSE is running stuff in the
>>>> boot which is probing serial ports and messing with the carrier wrongly
>>>> and in ways it didn't use to. That would fit the fact that something
>>>> similarly broken has apparently also appeared in the Fedora user space
>>>> bootup.
>>
>> And we (suse) have a report for enterprise, that says ModemManager
>> causes a similar issue. Could you perhaps check whether you have that
>> thing installed?
>>
>> thanks,
> 
> Yep. ModemManager-0.5-3.1.3.i586

And what happens if you remove that?

-- 
js
suse labs
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