Subj : Re: Wifi error log for Bookworm?
To   : Lawrence D'Oliveiro
From : bp@www.zefox.net
Date : Sat Oct 26 2024 16:04:29

Lawrence D'Oliveiro <ldo@nz.invalid> wrote:
> On Fri, 25 Oct 2024 16:11:17 -0000 (UTC), bp wrote:
>
>> Does anybody have experience with directional antennas?
>
> Back in the early days when broadband Internet was still exotic and
> expensive and wi-fi was new, people experimented with using it for longer
> range point-to-point connections. I remember reports that empty Pringles
> potato-chip cans were a remarkably cost-effective way of achieving the
> necessary directionality.

As I understand it, the Pringles "cantenna" was intended to be maximally
directional. If I understand my problem correctly the need is to "shadow"
my access point from the neighbors more than to direct transmit power
to my clients (signal level at the client location is ~90% per wavemon,
80% gave good connectivity until recently).

There seem to be a few complaints about wifi behavior on the Forums,
since my problems appeared out of the blue after an upgrade it's possible
that software is involved also.

Something very similar happened after a bookworm upgrade a few months ago.
After some hair-pulling and a few more upgrades it simply went away.

As an aside, now wavemon seems to crash on its own, reporting:

│Waiting for scan data ...free(): double free detected in tcache 2                                                              │
│                                                                 Aborted

That seems clearly to be a software issue, though whether in wavemon or
somewhere else isn't clear to me.

Thanks for writing,

bob prohaska

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