Re: FW: Wireless speed regression issue with >6.12.12/6.13.x + firmware update for mediatek MT7925

["Jean-François Ingelaere" <masterprenium@gmail.com>]

Hello,

The Cisco Catalyst C9120AXI (not Meraki), is running in Lightweight 
mode, connected  to the Cisco Virtual Wireless Controller.

I was running tests in 5Ghz, WPA2 + 160Mhz Channel width, not 80 (+all  
supported rates enabled, RRM+DCA enabled, 802.11h enabled, BSS enabled). 
As tested previously 20Mhz channel width gives better performances than 
160Mhz after regression.

Following speed are observed with highest steams as I can (multi thread 
iperf/nperf ect). Speed test isn't run in perfect conditions but it 
doesn't really mind.

With 6.14.3 + latest firmware 20Mhz channel width (DL/UL) : 
130mbps/160mbps (ch36)
With 6.14.3 + latest firmware 40Mhz channel width : 230mbps/330mbps (36,40)
With 6.14.3 + latest firmware 80Mhz channel width : 340mbps/6mbps 
(36,40,44,48)
With 6.14.3 + latest firmware 160Mhz channel width : 640mbps/7mbps 
(36,40,44,48,52,56,60,64)

As you can see, Upload speed is dropping with 80Mhz channel width. Can 
you please try in your setup with 160Mhz ? As a check.

-> With 6.14.3 + latest firmware 160Mhz in 802.11AC (Cisco 2802E): 
800mbps/380mbps (52,56,60,64,36,40,44,48)

As a debug/comparison :

With 6.14.3 + 202412 firmware 20Mhz channel width (DL/UL) : 
130mbps/170mbps (ch36)
With 6.14.3 + 202412 firmware 40Mhz channel width : 130mbps/280mbps (36,40)
With 6.14.3 + 202412 firmware 80Mhz channel width : 390mbps/580mbps 
(36,40,44,48)
With 6.14.3 + 202412 firmware 160Mhz channel width : 630mbps/950mbps 
(36,40,44,48,52,56,60,64)


I don't have any other 802.11ax AP at the moment. Remember : no issue 
with 802.11ac.

Best regards,
Jeff

Le 28/04/2025 à 13:00, Mingyen Hsieh (謝明諺) a écrit :
>
> On Thu, 2025-04-24 at 13:20 +0200, Jean-François Ingelaere wrote:
> > 
> > External email : Please do not click links or open attachments until
> > you have verified the sender or the content.
> > 
> > 
> > Hello,
> > 
> > I hoped you had previous messages. Firmware is the released from my
> > distro (Gentoo Linux) 20240410, but yes you're right, the firmware
> > used
> > in this case for mt76 is 20240305, sorry.
> > 
> > [74734.459451] Loading firmware:
> > mediatek/mt7925/WIFI_RAM_CODE_MT7925_1_1.bin
> > [74734.463449] mt7925e 0000:73:00.0: ASIC revision: 79250000
> > [74734.539692] Loading firmware:
> > mediatek/mt7925/WIFI_MT7925_PATCH_MCU_1_1_hdr.bin
> > [74734.539760] mt7925e 0000:73:00.0: HW/SW Version: 0x8a108a10, Build
> > Time: 20250305132908a
> > 
> > [74734.878892] Loading firmware:
> > mediatek/mt7925/WIFI_RAM_CODE_MT7925_1_1.bin
> > [74734.879069] mt7925e 0000:73:00.0: WM Firmware Version: ____000000,
> > Build Time: 20250305133013
> > [74734.974255] Loading firmware:
> > mediatek/mt7925/WIFI_RAM_CODE_MT7925_1_1.bin
> > 
> > 
> > The AP used is a Cisco C9120AXI-E.
> > 
> > 
> > Best regards,
> > 
>
> Hi,
>
> I had tested with this AP (5G HE80 & WPA2), and my setting is v6.14.3 +
> latest firmware. It looked good for me.
>
> Could you give me your AP setting and could you test with another AP?
>
> Best Regards,
> Yen.
>
>
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