Re: iwd release 1.30 onwards cannot find available networks

From: Paul Menzel <pmenzel@molgen.mpg.de>
To: Bruno Dantas <dantas@airpost.net>
Cc: James Prestwood <prestwoj@gmail.com>, iwd@lists.linux.dev
Subject: Re: iwd release 1.30 onwards cannot find available networks
Date: Mon, 12 Dec 2022 19:39:51 +0100	[thread overview]
Message-ID: <1573eff1-c74a-ec1f-9e75-5ce74f77d068@molgen.mpg.de> (raw)
In-Reply-To: <126d2f2b-07ef-fd22-7656-dcd21f3cece0@airpost.net>

Dear Bruno,

Am 12.12.22 um 18:52 schrieb Bruno Dantas:

>> Thanks for taking initiative and bisecting. But its puzzling how
>> this commit could have any effect. The only functional change is
>> removing a pending request when the wiphy goes down, so not related
>> to anything while the device is up/scanning.
> 
> It was my first git bisect, so it is certainly possible that I made a
> mistake. Regardless, the regression definitely appeared in release
> 1.30 and I excluded a regression in ell.

Does reverting the found commit on top of master fix the regression?

     git revert dfcba7c83c60f1a99ecf6f1424e97bf89fcab38e

>> Just to be clear, you are making sure IWD scans prior to calling
>> 'get- networks' right? i.e. station wlan0 scan?
> 
> Yes, but the scan just hangs. I wait a full minute before
> interrupting the scan with Ctrl+c.
> 
>> But assuming IWD is scanning (or trying) we need to see some debug
>> logs for IWD, and best if you could also get an iwmon trace when
>> IWD starts up and issues scans, and when you call get-networks.
>> More info how to do that here:
> 
> No problem. When using latest iwd 2.0, then letting it scan for a
> minute before interrupting, then running get-networks, here is the
> iwmon trace: https://pastebin.com/h7gHrS2w

(I’d prefer, if you attached the output.)

> And "iwd -d" output: https://pastebin.com/2y5hHfWa
> 
> I don't see Alvin's patch in the git commit history yet. Once it's
> been committed, I can recompile iwd 2.0 and test it.

You can save Alvin’s message (Ctrl + s in Mozilla Thunderbird) and apply 
to your git archive with `git am path/to/message` or, as it is a revert, 
just execute:

     git revert 6051a1495227bbe7ba357f6995d4dbe4a4862331

> Please let me know what you think of the iwmon and iwd debug output.

Thank you for helping to debug this.

Kind regards,

Paul