Fedora 35 - Very slow wifi

Ask Fedora
1

Very slow Wifi speed after upgrading to Fedora 35.
I’m getting 4 MBPS on a 50 MBPS internet connection using built in wifi adapter QCA9377.

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2

https://discussion.fedoraproject.org/t/how-to-keep-internet-connection-connected-without-interruption/74879/4?u=vgaetera

3

Thanks for that. But I have slow internet speed, no interruptions.

4

In any case, it should be the same setting, see:
https://discussion.fedoraproject.org/t/qca9377-wifi-adapter-very-slow-speed-on-fedora-33/77675/2?u=vgaetera

5

i would suggest disabling ipv6.

6

Yeah, but the interruptions caused by the power management daemon are causing you to have apparent low speed issues that mask said root cause for you.

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7

I tried iw wlp2s0 set power_save off. Still same issue.
What I found out today, I have this problem only on a single wifi AP.
It work perfectly on other APs.

I’ve attached screenshot of wavemon

07844e775f55e5b2bff4d8d99e6184fc534a2566.png
07844e775f55e5b2bff4d8d99e6184fc534a2566.png1435×822 62.6 KB

You can see that bit rate is only 1Mbit/s.
On other APs I can see higher bit rates like 70Mbit/s.

8

Still same issue

9

When that happens here, I restart the router… and it goes back to normal.

1 Like
10

Yeah, I think that will help. I’ll factory reset the router.

11

I think @luca means power down and then power up the router, not factory reset.

2 Likes
12

You may want to check the transmit power levels on the access point as well if they overlap.

1 Like
13

you should check the wifi connection in the router too and measure via netspeed tools/websites

on acer notebooks with Qualcomm Atheros wifi chips I’ve seen Fedora reported ~1-6 Mbit only and the router reported 433 and more Mbit …

and I got trouble with channel 13 (don’t know if it’s fixed now)