Hi, I am an (not so) old fan of Fedora, using it since 2020.
I love it in the most, except slow WiFi internet.
After some update in 2023 internet becomes extremely slow, almost impossible to view forums and chat with AI. I switched to Windows back then, and now try to use Fedora again. I installed it, and everything went fine until the next update two days ago.
Package loss was huge, 96% or something:
sudo tcpdump -i wlp2s0 -vvv -c 100
I have a laptop Dell XPS 15 9550
The problem is related to brcmfmac43602 driver or wpa_supplicant. This wifi hardware is not supported by vendor, so there is a community brcmfmac driver only.
I found a solution here:
It refers to the next problem: Can’t connect to wifi | WPA2 + WPA3 (mixed mode)
But my router does not use WPA3 at all, and changing Router settings (like “disable WPS”) did nothing.
Surfing the internet I found that there is another wifi manager: “iwd”, instead of " wpa_supplicant":
Removing “wpa_supplicant” and enabling “iwd” makes the internet much better, but still not perfect. At least I can do some web surfing. But the internet struggles watching videos.
And with IWD it can not sleep at all. It seems, the problem is quite old. With advice like “buy a new router” or “buy a usb wifi dongle”. Still no solution. But it worked well on this hardware.
There are user reports of success after replacing the original Broadcom WiFi with an Intel card. Note that many reports posts didn’t give full specs for the card – maybe because the work was done by a repair shop). You may be able to see which Intel cards work by searching for your laptop model in the LHDB.
The BCM43602 wireless chipsets seem to have been among the first ones to benefit from the open source Broadcom drivers baked into the kernel. As such, they seem to have certain issues, some of them are documented on this Archwiki page. One of the described workarounds might be of help.
Otherwise, you might consider a WiFi dongle that works well with Linux.