Re: inconsistent wifi at boot time, is it a kernel bug or NWM bug?

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On Tue, Aug 5, 2014 at 6:15 PM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote:
> I filed the nitty gritty details as this bug against NetworkManager even
> though I don't know that it's a Network Manager problem. I don't see any
> kernel messages at all that indicate the kernel is mad or confused.
> https://bugzilla.redhat.com/show_bug.cgi?id=1127022
>
> The gist is that if WiFi comes up at boot time, it works fine for the
> entirety of that boot "session". If I reboot, maybe it works again or maybe
> it doesn't (non-deterministic); and if it doesn't work, I can't get it to
> work it's a total fail. By fail, not only does it not connect to my network,
> it doesn't see any networks at all. Turning the WiFi radio off then on
> doesn't fix it.
>
> b43 wifi has been flakey since maybe kernel 3.11 for me, so it may very well
> just be time to give up on that and go with the proprietary driver *sigh* in
> particular because I only get 802.11g with b43. No wireless-N. So if there
> are opinions on being sane and just giving up, I'd accept that also.
>
> If you've got strong wifi knowledge, probably best to reply in the bug if I
> can enhance the quality of the bug reporting. If it's throwing spaghetti at
> a wall advice, I'll go for that too, but probably best to keep it on the
> list until there's something useful to report in the bug.
>
>
> Chris Murphy
>
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One thing I would suggest is to edit
/etc/systemd/system/dbus-org.freedesktop.NetworkManager.service
/etc/systemd/system/multi-user.target.wants/NetworkManager.service
/etc/systemd/system/multi-user.target.wants/ModemManager.service

and add the option     --debug to NetworkManager's Exec... line
and add the option     --debug to the ModemManager's  Exec... line.

The debug output should appear in /var/log/messages
and/or in the output of running the command
dmesg

That info would be very useful to the developers.

Also, look into the files:
/etc/sysconfig/wpa_supplicant
and add the option  -dd
to the line:
OTHER_ARGS="-u -f /var/log/wpa_supplicant.log -P /var/run/wpa_supplicant.pid"
Like so:
OTHER_ARGS="-dd  -u -f /var/log/wpa_supplicant.log -P
/var/run/wpa_supplicant.pid''

This will make the debug info appear in
/var/log/wpa_supplicant.log

That info would also be very useful to the developers.


Good Luck.
-- 
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