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Date:      Tue, 24 Oct 2023 09:43:53 -0600
From:      Warner Losh <imp@bsdimp.com>
To:        bob prohaska <fbsd@www.zefox.net>
Cc:        "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>
Subject:   Re: ucom debug not working on releng/14
Message-ID:  <CANCZdfpogyGRWUxrJSYrnkxbgf=fxzMrKcGuOq4%2B67TuD=DCKQ@mail.gmail.com>
In-Reply-To: <ZTfj%2B1Qk63qfn%2BJp@www.zefox.net>
References:  <ZTfj%2B1Qk63qfn%2BJp@www.zefox.net>

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I thought that was a loader tuneable... have you tried it there?

Warner

On Tue, Oct 24, 2023, 9:34 AM bob prohaska <fbsd@www.zefox.net> wrote:

> A Pi2 running armv7 releng/14 reports
>
> sysctl: unknown oid 'hw.usb.ucom.debug' at line 10
>
> when booting.
>
> The intent was to understand why it drops ssh connections
> when they are used to communicate with an ftdi usb-serial
> adapter.  A few other hosts running -current accept the
> debug setting and generate copious output in response.
>
> Man pages suggest the option is available on stable,
> -current and releng/, but it seems to actually work
> only on -current, at least for armv7.
>
> Thanks for reading, and any hints what might be done wrong.
>
> bob prohaska
>
>
>

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<div dir=3D"auto">I thought that was a loader tuneable... have you tried it=
 there?<div dir=3D"auto"><br></div><div dir=3D"auto">Warner</div></div><br>=
<div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Oc=
t 24, 2023, 9:34 AM bob prohaska &lt;<a href=3D"mailto:fbsd@www.zefox.net">=
fbsd@www.zefox.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">A=
 Pi2 running armv7 releng/14 reports<br>
<br>
sysctl: unknown oid &#39;hw.usb.ucom.debug&#39; at line 10<br>
<br>
when booting. <br>
<br>
The intent was to understand why it drops ssh connections<br>
when they are used to communicate with an ftdi usb-serial<br>
adapter.=C2=A0 A few other hosts running -current accept the<br>
debug setting and generate copious output in response.<br>
<br>
Man pages suggest the option is available on stable,<br>
-current and releng/, but it seems to actually work<br>
only on -current, at least for armv7.<br>
<br>
Thanks for reading, and any hints what might be done wrong.<br>
<br>
bob prohaska<br>
<br>
<br>
</blockquote></div>

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