After 24h i can confirm that my solution is not stable. If i turn off the machine the problem is back and this time is not speed in question but the network manager that will "collapse".
Anyway, i can confirm that i can use the wifi card in any frequency, but is not stable and will drop after boot many times until the network manager crash. ** Changed in: linux (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1761693 Title: Wifi realtek 8822be BUG <=18.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1761693/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs