Re: [linuxwifi] Intel Centrino Ultimate N 6300 regression

From: Nigel Sollars <nsollars@gmail.com>
To: Luciano Coelho <luciano.coelho@intel.com>
Cc: linuxwifi@intel.com, linux-wireless@vger.kernel.org
Subject: Re: [linuxwifi] Intel Centrino Ultimate N 6300 regression
Date: Wed, 21 Aug 2019 10:30:50 -0400	[thread overview]
Message-ID: <CAG6aBkW09YFz4asHZkhWBUenBiT3dgb7iGXBCq8KkCM09QXjLg@mail.gmail.com> (raw)
In-Reply-To: <941b807b02962fadaf738942baf1621738872723.camel@intel.com>

Thanks for the feedback I will look into this and report my findings,
to answer your question, yes I can build a kernel to do this testing.

I will also update my Redhat Bug Ticket with this information also

Regards
Nigel Sollars

On Wed, Aug 21, 2019 at 2:08 AM Luciano Coelho <luciano.coelho@intel.com> wrote:
>
> Hi Nigel,
>
> Unfortunately we don't actively support these old devices anymore, though we try to help as much as we can.
>
> This error is -EINVAL, which means that the driver is not recognizing a parameter passed to it. It's hard to tell exactly what is causing that without further investigation. Are you able to compile the kernel and do some tests? One way you could do it is to replace the -EINVAL with a line number, so we can try to see where the invalid parameter error is coming from. Doing something like this: http://pastebin.coelho.fi/03fa29d951db5405.txt
>
> Then the returned error should correspond to a line number on the driver.
>
> Another thing you could try is to bisect the kernel between the last known good version and the one that fails. To do that you should try to find a newer kernel than 4.15 that works, preferrably as close to 5.1 as possible.
>
> HTH.
>
> --
> Cheers,
> Luca.
>
>
> On Thu, 2019-08-08 at 10:42 -0400, Nigel Sollars wrote:
>
> Hi,
>
> So I have been trying to reach out in aim to get this driver fixed as its regressed now to a total non working state.
>
> The card can see access points, but thats about as good as it gets as trying to connect to any networks ( either 2.4 ot 5 Ghz ) results in the following,
>
>   wlp3s0: CTRL-EVENT-SCAN-FAILED ret=-22 retry=1
>
> ( alot of these ) which then resets connection status with a failed timeout.
>
> I am currently running FedoraCore 30 with the 5.2.5-200 kernel updated from 5.1.x yesterday. The firmware loaded is,
>
> loaded firmware version 9.221.4.1 build 25532 op_mode iwldvm
>
> Now with all that said, using a Linux Mint live boot from a usb device yeilds the card working fine at both 2.4 and 5ghz speeds, it connects within seconds. The kernal in this live boot is 4.15.x and uses the same firmware build as my FC install.
>
> I did see strange behavior with this card from around 4.18 to 20, thinking the card might have developed a fault and obtained a new one. This proved that this was not the case as I get the exact same behavior from both cards.
>
> Hope this information is helpful to solve quickly, please reach out for more information if required
>
> Thanks
> Nige
>

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                           Alan Turing