Bug 213173
| Summary: | Low Rx Rate on 802.11ax using AX200 (Linux only) | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | beta990 (francois5537) |
| Component: | network-wireless-intel | Assignee: | Default virtual assignee for network-wireless-intel (drivers_network-wireless-intel) |
| Status: | NEW --- | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | Intel | ||
| OS: | Linux | ||
| Kernel Version: | 5.12.3 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
router-linux-speed
router-windows-speed iperf3-linux iperf3-windows |
||
Created attachment 296933 [details]
router-windows-speed
Created attachment 296935 [details]
iperf3-linux
Created attachment 296937 [details]
iperf3-windows
Downgrading the kernel to LTS fixes the problem: Linux desktop 5.10.38-1-lts #1 SMP Wed, 19 May 2021 08:46:06 +0000 x86_64 GNU/Linux So it seems 1/2 antenna connector wasn't connected to the board. After the reattach the issue seems to be gone. :) It makes me wondering if Windows only uses 1 antenna (knows it can only use one), and Linux needs both antenna connectors? |
Created attachment 296931 [details] router-linux-speed My Intel Wi-Fi 6 AX200 keeps reporting a really low Rx speed, using Windows 10 (dual-boot) with the latest drivers, the Rx speed is normal and the Wifi card is performing far better (see results). If I disable 802.11ax (on router or using iwlwifi disable_11ax=y) the issue disappears, but it doesn't use the full potential of my router. I think this is a firmware Linux bug, as it doesn't show up anywhere else.