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Date:      Fri, 30 Aug 2019 21:08:39 +0200
From:      Miranda Maria Sophie Van den Breukelingen <mms.vanbreukelingen@gmail.com>
To:        Maksim Yevmenkin <maksim.yevmenkin@gmail.com>
Cc:        Warner Losh <imp@bsdimp.com>, Konstantin Belousov <kostikbel@gmail.com>,  Hans Petter Selasky <hps@selasky.org>,  "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>
Subject:   Re: Kernel-Crash when working with ubt0
Message-ID:  <CAM94aeoXEdi_x3_%2BKSFRdTAbaxwuOQVkh=dyBt3=HHyQdDAZ0A@mail.gmail.com>
In-Reply-To: <CAFPOs6qt7-L97wy1YQWUmoCzXAvetxmrKPK4guEmLvjm-Ov67A@mail.gmail.com>
References:  <1115053193.64543.1567031661382.ref@mail.yahoo.com> <1115053193.64543.1567031661382@mail.yahoo.com> <CANCZdfr%2B21-L8C61ThW2CQi8bjVGcvBPxxDCNoXyZXN0Bv44pA@mail.gmail.com> <CAFPOs6r140WzpSM_fEhCdhQ7OGMHq1xhkacWzv6EDVZph097UQ@mail.gmail.com> <CANCZdfph%2BckxQ6f%2BJAN=vYVkXa4%2BUGbsFzEf7RHvdAx=wNCX5A@mail.gmail.com> <CAFPOs6qt7-L97wy1YQWUmoCzXAvetxmrKPK4guEmLvjm-Ov67A@mail.gmail.com>

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works for me as far as pairing concernes (with patch -C > .diff.txt

option         LOCK_PROFILING
option         WITNESS

is on in kern.config. My problem presists in the following form:


*l2control -a c0:7a:a5:00:c7:11 read_channel_listl2control: Could not bind
socket, bdaddr=c0:7a:a5:00:c7:11: Network is down*

l2ping is ok; tried with different BT-headsets and "buttons", did *'patch
-C < ng_btsocket.diff.txt'* in /usr/src/head; success with the chunks 1-19,
removing a previous patch and looked satisfied after gitt --diff - 'ing it.

Interferences are a big problem with that kinda technology as on 2.4Ghz
like the "old" WLAN wave has been - and where I live it is still the same -
even when we're getting IPv6 the download speed won't relatively be faster
- it always took half an hour to download an .iSO at a distribution server
and without VPN it is fast  and effordable for about 10MB/s with .torrents
- 5G we are coming,  I think, the VR is gonna  need lots and lots of
data-transfers around the globe.

So, what to do with the "network down" - problem?

The 'bluetooth-config scan' command is practical but is just pairing, not
connecting. Any ideas?

MvB



On Fri, 30 Aug 2019 at 18:41, Maksim Yevmenkin <maksim.yevmenkin@gmail.com>
wrote:

> >> > patch -p1 worked for me to apply it.
> >> >
> >> > And it worked just fine for everything once I rebooted. The patch
> looked fine to my eye.
> >>
> >> thanks Warner
> >>
> >> please find attached (more complete) patch that should address issue
> >> of holding lock over copyin/out (or so i claim).
> >
> > Seems to be working fine now...
>
> committed. thanks!
>
> max
>



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