On Fri, Jan 8, 2021 at 1:53 PM Pkshih <pkshih@xxxxxxxxxxx> wrote: > > On Tue, 2021-01-05 at 12:30 +0000, Kai-Heng Feng wrote: > > On Tue, Jan 5, 2021 at 10:07 AM Pkshih <pkshih@xxxxxxxxxxx> wrote: > > > > > > > > > > -----Original Message----- > > > > From: Kai-Heng Feng [mailto:kai.heng.feng@xxxxxxxxxxxxx] > > > > Sent: Wednesday, December 30, 2020 11:53 AM > > > > To: Pkshih > > > > Cc: Larry.Finger@xxxxxxxxxxxx; linux-wireless@xxxxxxxxxxxxxxx; hugh.chao@c > > anonical.com; > > > > ethan.hsieh@xxxxxxxxxxxxx > > > > Subject: Re: 802.11ac AP mode support on Realtek 8821AE? > > > > > > > > On Wed, Dec 30, 2020 at 10:13 AM Pkshih <pkshih@xxxxxxxxxxx> wrote: > > > > > > > > > > On Fri, 2020-12-25 at 12:16 +0800, Kai-Heng Feng wrote: > > > > > > On Fri, Dec 25, 2020 at 2:18 AM Larry Finger <Larry.Finger@xxxxxxxxxxx > > t> > > > > > > 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? > > > > > > > > > > Yes, it has hardware capability of 5G AP. > > > > > > > > > > I want to make sure which chip you use. 8821AE with rtlwifi, or 8821CE > > with > > > > > rtw88? > > > > > > > > 8821AE with rtlwifi here. > > > > > > > > > > I'm not an expert in network-manager, so I try to bring up 5G softap with > > hostapd, > > > and then my cellphone can connect to it and ping ok. > > > Could you try it with attached hostapd configuration file? > > > > > > I use default configuration but change below > > > interface=wlan0 > > > ssid=test-8821ae > > > hw_mode=a > > > channel=149 > > > > > > The driver I use is built-in in kernel 5.9.10. > > > The hostap is hostap_2_9-1731-g56a1df71e (just list the version I use; I > > believe other version also work) > > > > Using hostapd directly can make AP in 5G work. So apparently the issue > > lies between NetworkManager and WPA supplicant. > > However, though it works with hostapd, the signal strength is > > extremely weak. Is this expected? > > > > I found PHY and RF parameters are not updated properly years ago. > It would be much better if attached patch is applied. Please help to > try if it also works for you. Thanks, the signal strength still isn't super strong but much better than the previous state. Tested-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> > > side note: I don't submit this patch immediately, because I need > time to verify this patch before submitting. > > --- > Ping-Ke >
