I have investigated a bit further. - Using a USB wifi adapter (took me some time to force one to use only the 2.4 GHz band as my laptop wifi adapter) I can always connect properly, so the issue is restricted to the intel card I have in my laptop. This should exclude wpasupplicant and network-manager.
- The card in the laptop occasionally works correctly. This is why I originally got the impression that downgrading the linux-firmware package was restoring correct behavior (in fact, it was just by chance that I probably got the correct behavior). - When the card misfunctions, I get wild oscillations in the reported signal quality. Specifically, while the card is just scanning the nearby APs, I see a good quality for the WPA enterprise AP. During the connection attempt, the quality starts to fluctuate close to 0. My guess is that most likely something is starting to fail in the wifi module or that there is an issue with its power saving control. The latter could be kernel dependent, but given the update history, it seems unlikely to me. I'll check better. In the meantime, thanks for the help and advice. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1837440 Title: linux firmware 1.178.3 seems to break WPA enterprise To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1837440/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
