Wednesday, September 27, 2023

Re: TP-Link WN821N USB wireless NIC on OpenBSD/amd64 7.3

On Wed, Sep 27, 2023 at 01:49:54PM +0800, Anders Jensen-Waud wrote:
> On Tue, Sep 26, 2023 at 08:35:29AM +0200, Stefan Sperling wrote:
> > On Tue, Sep 26, 2023 at 11:04:21AM +0800, Anders Jensen-Waud wrote:
> >
> > > Is there a way I can get the NIC to speed up?
> >
> > Yes, the way is to implement 802.11n support in the driver.
> > Help is welcome.
> >
>
> Thank you very much, Stefan.
>
> Is there no way to switch mode to 802.11ac or similar and get reasonable
> performance?

No. At this time, 11ac is supported on PCI Intel and Broadcom wifi cards
via iwm(4), iwx(4), and bfwm(4) drivers. These drivers are miles better
than any USB wifi driver we have, and I would advise against using a USB
stick if you can run one of these drivers one way or another.
Work needs to be done to add 11n/11ac support to other drivers, including
the realtek ones.

I am working to get ath11k devices supported which are appearing in
laptops released this year. This will still take a while to materialize
and will initially be 11a/b/g only. I don't have time to deal with more
than one driver at a time. If you need 11n/11ac in other drivers then
you need to do the work yourself or find someone who can do it.

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