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From:   Kai-Heng Feng <kai.heng.feng@canonical.com>
Date:   Fri, 25 Dec 2020 12:16:59 +0800
Message-ID: <CAAd53p4=tAmyCE3QhFP8N9We3T_CGvnLWYgZAH8naWc_njtrOQ@mail.gmail.com>
Subject: Re: 802.11ac AP mode support on Realtek 8821AE?
To:     Larry Finger <Larry.Finger@lwfinger.net>
Cc:     Pkshih <pkshih@realtek.com>,
        linux-wireless <linux-wireless@vger.kernel.org>,
        Ethan Hsieh <ethan.hsieh@canonical.com>,
        Hugh Chao <hugh.chao@canonical.com>
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On Fri, Dec 25, 2020 at 2:18 AM Larry Finger <Larry.Finger@lwfinger.net> wrote:
>
> On 12/24/20 7:26 AM, Kai-Heng Feng wrote:
> > Hi Ping-Ke,
> >
> > We've found that when creating 5G AP on 8821AE, it's not on other
> > devices' wifi list.
> >
> > Here's the steps I used to create an AP:
> > $ nmcli c add type wifi ifname wlp3s0 con-name hello autoconnect no ssid hello
> > $ nmcli c modify hello 802-11-wireless.mode ap ipv4.method shared
> > 802-11-wireless.band a
> > $ nmcli connection up hello
> >
> > If we change "802-11-wireless.band" to "bg", then the AP can be
> > scanned by other devices.
> > Does 8821AE have hardware capability to support 5G AP?
>
> What does 'iw list' show for 5G frequencies?

* 5180 MHz [36] (23.0 dBm)
* 5200 MHz [40] (23.0 dBm)
* 5220 MHz [44] (23.0 dBm)
* 5240 MHz [48] (23.0 dBm)
* 5260 MHz [52] (23.0 dBm) (no IR, radar detection)
* 5280 MHz [56] (23.0 dBm) (no IR, radar detection)
* 5300 MHz [60] (23.0 dBm) (no IR, radar detection)
* 5320 MHz [64] (23.0 dBm) (no IR, radar detection)
* 5500 MHz [100] (23.0 dBm) (no IR, radar detection)
* 5520 MHz [104] (23.0 dBm) (no IR, radar detection)
* 5540 MHz [108] (23.0 dBm) (no IR, radar detection)
* 5560 MHz [112] (23.0 dBm) (no IR, radar detection)
* 5580 MHz [116] (23.0 dBm) (no IR, radar detection)
* 5600 MHz [120] (23.0 dBm) (no IR, radar detection)
* 5620 MHz [124] (23.0 dBm) (no IR, radar detection)
* 5640 MHz [128] (23.0 dBm) (no IR, radar detection)
* 5660 MHz [132] (23.0 dBm) (no IR, radar detection)
* 5680 MHz [136] (23.0 dBm) (no IR, radar detection)
* 5700 MHz [140] (23.0 dBm) (no IR, radar detection)
* 5745 MHz [149] (30.0 dBm)
* 5765 MHz [153] (30.0 dBm)
* 5785 MHz [157] (30.0 dBm)
* 5805 MHz [161] (30.0 dBm)
* 5825 MHz [165] (30.0 dBm)

Kai-Heng

>
> Larry