Fedora 39 Wi-Fi Slowdown Issue

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1

Speed issues aren’t present on the Windows 11 Pro side. Wi-Fi is working smoothly.

win11pro
win11pro740×338 120 KB

In Fedora 39 (Cinnamon), however, the Wi-Fi speed is very slow.

fedora39
fedora39739×338 106 KB

I’m seeking help regarding this. Thank you.

inxi -F

Network:
  Device-1: Realtek driver: rtw89_8852be
  IF: wlo1 state: down mac: 22:01:0C:54:7H:W4

lspci | grep Network

01:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device b85b

sudo lshw -class network

*-network                 
       description: Wireless interface
       product: Realtek Semiconductor Co., Ltd.
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: wlo1
       version: 00
       serial: 22:01:0C:54:7H:W4
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtw89_8852be driverversion=6.5.11-300.fc39.x86_64 firmware=N/A ip=192.168.1.7 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:82 ioport:f000(size=256) memory:fcf00000-fcffffff

lspci -k -n -n | grep -i -A 3 -e net


01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. Device [10ec:b85b]
	DeviceName: Realtek Wireless LAN + BT
	Subsystem: Hewlett-Packard Company Device [103c:88e6]
	Kernel driver in use: rtw89_8852be
2

There have been several posts on this thread about cards using that driver and problems with speed that seem related.

This is one related

3

Realtek’s business is make cheap versions of intel performant network chips.

They are cheap because they lack the silicon to make them perform fast.
For lots if uses that is an okay trade off.

If you really need performance replace tge realtek with an intel card.

4

What else is using your WiFi network?

I used be mixed up in workshops that used student labs and linux. At one time we found similar differences between Windows for Workgroups and linux WiFi performance. Windows was using “Wi-FI Multimedia Quality of Service” (QOS) requests that gave it priority.