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Subject: Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia
 Nano.
To:     Geoffroy Letourneur <g.letourneur@samsung.com>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>,
        "linuxwifi@intel.com" <linuxwifi@intel.com>
Cc:     Gilles Mazars <g.mazars@samsung.com>,
        Martin Bourreau <m.bourreau@samsung.com>
References: <CGME20200325155438uscas1p19c02d00cfd32dac911df3df7a5390eba@uscas1p1.samsung.com>
 <8096A04E-8692-4DC3-A8D0-8F85FF972799@samsung.com>
From:   Matthias May <matthias.may@neratec.com>
Message-ID: <04b77faf-2862-22a4-c7e1-1163219e76e9@neratec.com>
Date:   Thu, 26 Mar 2020 08:33:35 +0100
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On 25/03/2020 16:54, Geoffroy Letourneur wrote:
> 
> Hello,
> 
> I am working on Jetson Nano boards. I would like to connect two boards together with AX200 wifi module.
> One is configured in hostspot mode and the other one is the client connected to the hostspot.
> 
> Kernel Version: 4.9.140-tegra aarch64
> Ubuntu distribution: Bionic
> The idea is to used hostapd and wpasupplicant daemon to set up the module and connect the card together.
> Wpa_supplicant and hostapd version V2.6.
> 
> I install all the drivers from intel and follow this tuto. https://wifi.hypergeek.net/you-too-can-have-a-sub-200-11ax-client/
> So I can see the wlan phy with ifconfig command line.
> When I try to launch hostapd in ax mode with your module I have the following mistake.
> ACS: Possibly channel configuration is invalid, please report this along with your config file. ACS: Failed to start wlan0: AP-DISABLED hostapd_free_hapd_data: Interface wlan0 wasn't started
> 
> Could you help to set up correctly hostapd ?
> 
> Best Regards
> 
> --
> Geoffroy LETOURNEUR
> Embedded Software Engineer,
> SSIC, Paris
> 
> Email: g.letourneur@samsung.com<mailto:g.letourneur@samsung.com>
> Tel: +33 6 45 14 24 32
> 
> 
> 


Hi

As far as i know the AX200 is not intended/can not be used as AP.

If you type "iw list" you should get a list of the capabilities of your
card.

On an ath9k based card this looks something like this:
valid interface combinations:
* #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO
} <= 1, #{ IBSS } <= 1,
total <= 2048, #channels <= 1, STA/AP BI must match, radar detect
widths: { 20 MHz (no HT), 20 MHz, 40 MHz }

BR
Matthias