This is my first time tracking down a kernel bug, so it's taking me a little while as I learn the bisection & kernel compilation procedure.
As an initial step, I have isolated the problem to something Ubuntu-specific. I have now tried running several mainline 5.4 kernels including, e.g., 5.4.17-050417-generic and found, to my surprise, the wireless signal is strong on those mainline kernels. To summarize my testing: BAD: 20.04 runs a signed Ubuntu 5.4 or 5.6 kernel GOOD: 18.04.4 (live usb) runs the default signed 5.3 kernel 20.04 runs unsigned mainline 5.3, 5.4, 5.8 kernels As a step towards a bisection, I've tried to boot a signed Ubuntu 5.3 kernel (taken from 18.04) on 20.04, but this hangs at the "Loading initial ramdisk" stage -- presumably due to some incompatibility between 18.04 and 20.04. I'll next attempt to compile the Ubuntu 5.3 kernel myself, which will hopefully boot on 20.04. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1885663 Title: RTL8822BE [10ec:b822] Subsystem [103c:831b] wifi regression To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1885663/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
