RE: rtw88 / rtl_8821ce: rfe 2 is not supported

[Andy Huang <tehuang@realtek.com>]

David Rubio <david.alejandro.rubio@gmail.com> writes,
> 
> Makes sense I guess. My room is 7m^2 so can't test beyond that.
> Small room issues, or well, not issues, I guess.
> 
> - Kodehawa
> 
> El lun., 19 oct. 2020 a las 14:10, Larry Finger
> (<Larry.Finger@lwfinger.net>) escribió:
> >
> > On 10/18/20 4:11 AM, Kalle Valo wrote:
> > > David Rubio <david.alejandro.rubio@gmail.com> writes:
> > >
> > >>>
> https://lore.kernel.org/linux-wireless/c0c336d806584361992d4b52665fbb82@r
> ealtek.com/
> > >>
> > >> I tested that patch. Works fine for me for wifi, but I can't test BT
> > >> to be sure it works 100%. Most people will be fine with just wifi
> > >> though, I guess, considering the objections were mostly about BT (I
> > >> understood -from the objection- that connecting to a AP when having a
> > >> BT device paired breaks?)
> > >
> > > If the patch helps people to get wifi working we should take it, BT coex
> > > issues can be fixed in followup patches. IIRC there has been multiple
> > > reports about this so I'm leaning towards taking the patch to v5.11.
> > >
> > > I changed the patch to New state and my plan is to take it to
> > > wireless-drivers-next once the tree opens:
> > >
> > >
> https://patchwork.kernel.org/project/linux-wireless/patch/20200805084559.30
> 092-1-kai.heng.feng@canonical.com/
> >
> > Kalle,
> >
> > I had generated and applied that trivial patch to my GitHub repo with the
> rtw88
> > drivers a couple of months ago. Yes, it does get the user past the
> > initialization check; however, wifi performance is abysmal according the the
> > users of the repo. It seems that the antenna selection of rfe 2 models affects
> > wifi as well as BT. Applying this patch will get wifi running; however, the
> > users will need to be within 1 m of the AP for it to work! I do not have an
> > RTL8821CE chip, thus I have not tested myself.
> >
> > Larry
> >
> 
David,

What is the band for the test, 2.4GHz or 5GHz?
Without setting to a correct rf module for RFE type 2, you might encounter some
problems on 2.4GHz band.
In my test, on 2.4GHz band, with the wrong setting, it could not connect to an AP.

Tzu-En