[Help]: Fenvi AX1800 slow on OpenWRT, Fast on Ubuntu.

[austonpramodh]

Checklist

• [X] I acknowledge that support is provided on a best-effort basis.
• [x] I acknowledge that the authors and contributors to this repository cannot be held responsible for the results of my use of any information contained in or linked from this repository.

uname

Linux OpenWrt 5.15.150 #0 SMP Fri Mar 22 22:09:42 2024 mips GNU/Linux

lsusb

Bus 002 Device 003: ID 0e8d:7961 MediaTek Inc. Wireless_Device

rfkill

rfkill: not found

dkms

dkms: not found

iw

phy#3
    Interface phy3-sta0
        ifindex 19
        wdev 0x300000003
        addr 90:de:80:47:92:22
        type managed
        channel 40 (5200 MHz), width: 80 MHz, center1: 5210 MHz
        txpower 3.00 dBm
        multicast TXQ:
            qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes    tx-packets
            0   0   0   0   0   0   0   0       0
phy#0
    Interface wlan0
        ifindex 6
        wdev 0x1
        addr 94:83:c4:11:96:c9
        type managed
        txpower 3.00 dBm
        multicast TXQ:
            qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes    tx-packets
            0   0   0   0   0   0   0   0       0

What happened?

I am using Fenvi AX1800(MT7921AU). It seems like its running slow on OpenWRT router, but runs fast on my PC(Ubuntu-24.04).

I tested the USB port if that was the issue, but it's not. Tested with USB3 SSD, got around 103MBps

Edit: Forgot to mention, The router I am using GL.INet MT1300

[austonpramodh]

Update: Got access to another router with OpenWRT. It gets the same 200mbps speed. I am assuming this could be a driver issue.

But speeds are not going above 240mbps.

[morrownr]

Hi @austonpramodh

Sorry for the delay. Been busy.

A quick look and the first thing that comes to mind is that the USB port(s) are running in USB2 mode. Recommend you go to the OpenWRT command line and run:

lsusb -t

Things that I noticed:

• I see a bitrate of 1200 Mbps so that is what we are looking for.
• Your sig.noise reading is really low. How close to the AP are you? Being too close can cause problems.

[wgetge]

You should check the MT1300 CPU usuage. I don't think MT7621 support HWNAT for USB Device. So most likely CPU bottlenecked.