Wi-Fi degraded performance (MT7922)

Two months ago my Wi-Fi was good.

Today the average latency to my router is 125 ms (while with another laptop I’m getting 6 ms).

Also the download bandwidth is not good, it downloads at ~2 Mbits/s, while the other laptop downloads at 35 Mbits/s (tested with iperf3).

I’ve seen this framework download/upload at 60 Mbits/s on the same router with the same iperf3 setup a few months ago so it was OK.

What changed: I upgraded from Debian Trixie to Debian Forky (so new Linux kernel, and firmware-mediatek bumped from 20250410-2 to 20251111-1), and got a bunch of updates fwupdmgr.

Do anyone have similar behavior?

Please test your Wi-Fi performance (you can use https://librespeed.org/ for example) before and after upgrading if you’re on Debian Trixie.

Maybe it’s just a coincidence but when my Wi-Fi was slow I had the audio expansion card issue and now both are working. I’ll continue logging if those two issues are correlated or not.

Ohh, another finding: when disabling Bluetooth I’m getting from 3.2 Mbits/s to 78 Mbits/s (downloading).

If I re-enable bluetooth boom I’m back to ~3 Mbit/s.

If I disable bluetooth again, boom 74 Mbits/s.

Looks consistent and reproducible.

Looks related to MT7922 mediatek wifi card wifi/bluetooth issue

Yeah I’d swap that out for the Intel AX210 module. I did early this year and my wifi has been consistent since then.

Have you tried setting apt to pin the version of firmware-mediatek to 20250410-1 or removing the 2025-11-11 files and replacing with the 2025-04-10 firmware, then rebuilding your initrd with sudo update-initramfs -u?

I’m glad to hear that Debian Forky seems otherwise okay, I have yet to bring forward my Framework 13 AMD (but I started with a Intel AX210 wifi module).