[LEDE-DEV] [OpenWrt-Devel] MT7620A WiFi issue - with a twist!

[Daniel Golle]

Hi Juergen,

On Sat, Feb 04, 2017 at 08:32:36AM +0100, Juergen Kimmel wrote:
> Hello everyone,
> I'm in the same boat struggeling with  mt7620a WiFi performance,
> namely with the device called   ZBT APE522ii.
> Stock firmware based on Openwrt (has no version number) has no issues
> concerning wifi performance.

That's because ZBT ships their devices with a firmware containing
Mediatek/Ralink's proprietary driver as well as the needed proprietary
user-space tools. However, this driver only supports either (multi-SSID)
AP-mode or Station-mode, but not both at the same time.

> 
> Because I`m focussing on a mesh solution,  I tested Openwrt/Lede based
> qMp (qmp.cat) but having the same issues described here.

That's not surprising, unfortunately.

> IMHO there must be different drivers to be used. My skills are not at
> all  sufficient to clear where the difference could be.

The main problem here is that rt2860_ap driver (which was at least
partially also published under GPLv2 terms, you can find it on github)
cannot do AdHoc mode which is needed for mesh stuff.

> So help is very much appreciated.

I'll be working on sorting things out for MT7620 once the kickstarter
project I created for that purpose reaches its goal.


Cheers


Daniel


> 
> 2017-02-04 2:27 GMT+01:00 Juergen Kimmel <juergenkimmel at gmail.com>:
> > Hello everyone,
> > I'm in the same boat struggeling with  mt7620a WiFi performance, namely with
> > the device called
> >  ZBT APE522ii.
> > Stock firmware based on Openwrt (no version number) has no issues concerning
> > wifi performance.
> >
> > Because I`m focussing on a mesh solution,  I tested Openwrt/Lede based qMp
> > (qmp.cat) but having the same issues described here.
> > IMHO there must be different drivers used. My skills are not at all
> > sufficient to clear where the difference could be.
> > So help is very much appreciated.
> >
> >
> > Weedy <weedy2887 at gmail.com> schrieb am Sa., 4. Feb. 2017 01:51:
> >>
> >> On 1 February 2017 at 15:29, Jamie Stuart <jamie at onebillion.org> wrote:
> >> > Hello LEDE / OpenWRT devs,
> >> >
> >> > I am requesting your help. First a little background…
> >> ...
> >> > This a known issue with the chipset and seems to have been round for
> >> > years.
> >> > We are currently building on LEDE trunk and still the issue persists.
> >> >
> >> > We are not driver developers, so my question is whether anyone with
> >> > knowledge can help and provide a proper fix for this issue?
> >>
> >>
> >> You will probably have the most luck posting a bounty on the linux
> >> wifi mailing list.
> >>
> >> Your root problem is picking a platform that basically uses a client
> >> mode tested driver in AP mode and then hanging a million clients off
> >> of it. I'm honestly surprised it didn't fall over sooner.
> >>
> >> May I suggest when it comes time to refresh the hardware you guys pick
> >> something with NGFF or mini-pcie slots for ALL radios.
> >>
> >> _______________________________________________
> >> Lede-dev mailing list
> >> Lede-dev at lists.infradead.org
> >> http://lists.infradead.org/mailman/listinfo/lede-dev
> 
> 
> 
> -- 
> Mit freundlichen Grüssen
> 
> Jürgen Kimmel
> 
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