Fedora 35 - Very slow wifi

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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How to keep internet connection connected without interruption - #4 by vgaetera

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

In any case, it should be the same setting, see:
QCA9377 Wifi adapter , very slow speed on Fedora 33 - #2 by raeedasif

i would suggest disabling ipv6.

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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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

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

Still same issue

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

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

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

2 Likes

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

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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)