Other wireless devices on the home net are fine. The Fedora 35 laptop is getting intermittent “internet down” errors in Chrome, and speed tests are failing. I have shuffled Wifi channels and rebooted my AT&T Pace router a couple of times. My Wifi signal seems to be good (CHUM BUCKET is my SSID):
> BSSID SSID MODE CHAN RATE SIGNAL BARS
> DC:7F:A4:0C:C1:2D CHUM BUCKET Infra 9 130 Mbit/s 87 ▂▄▆█
> DC:7F:A4:0C:C1:30 -- Infra 9 130 Mbit/s 84 ▂▄▆█
> DC:7F:A4:0C:C1:36 CHUM BUCKET Infra 161 540 Mbit/s 67 ▂▄▆_
Anyone else seeing this after a recent update/upgrade?
yum is a symlink to dnf now, so it won’t make a difference.
@wsanders : can you check the logs to see if there’s anything there that’s related to this? It could be a wireless issue, but it could also be related to dns name resolution or something else, so a look at the logs will give us a starting point for our debugging.
For now, solution is to downgrade to 5.16.12-200.fc35 kernel and drivers. I am not sure why this didn’t work earlier, except that I did it from grub. This time, I booted the old kernel, then deleted the 5.16.15-201 packages, and then rebooted just to make sure none of the new drivers loaded (could they? I don’t think so actually. It’s been a long time - years! - since a kernel upgrade broke my system!)
Thanks for opening the bug. Hopefully there’ll be a fix soon.
I see the bug has been marked as a private one—if there isn’t any personal information there, could you make it public so that everyone can see it? (Only package maintainers and the reporter can see private bugs)
Kernel 5.16.18 has just been released by Fedora today and this appears to have greatly mitigated/solved the issue for me with a Qualcomm Atheros adapter. Before this kernel I could not complete a WiFi speed test, now I see normal speeds.
The release changelog describes a revert:
Revert “swiotlb: rework “fix info leak with DMA_FROM_DEVICE”” (Linus Torvalds)