I have a lack of experience dealing with kernel modules, so I know there was a much easier way to build and test the module by itself, but I took the long route and it seems like a success.
Grabbed source for Ubuntu kernel package 5.0.0-25. Output mentioned patches to 5.0.0-25.26, if that means anything. Blacklisted r8822be, patched rtw88 with the requested patch, built everything, checked lsmod and see rtwpci/rtw88 instead of r8822be as intended, and wifi seems to be working! Only weird thing is when I built the kernel it started calling it version 5.0.18. I'm not really sure how kernel build versioning works, so let me know if I did something wrong. As a verification I ran update-initramfs against 5.0.0-25-generic (no rtw88 patch) to apply the blacklist r8822be rule, loaded it, checked that it's using rtwpci/rtw88, and I get no wifi as expected. Another validation would be great, but it looks promising to me. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1838133 Title: realtek r8822be kernel module fails after update to linux kernel- headers 5.0.0-21 Status in linux package in Ubuntu: Triaged Bug description: On July 24th I upgraded to the latest linux-headers-5.0.0-21 as part of the dist-upgrade for latest packages in Disco Dingo 19.04. I didn't notice that wifi was no longer working because at work I exclusively use a wired Ethernet connection. Today, however, when I tried to use my realtek r8822be wireless card, I discovered that it was totally unresponsive and did not work with wpa_supplicant / wpa_cli even when invoked manually from the command line (let alone with NetworkManager). When the problem occurred, I was using 19.04's latest kernel 5.0.0-21. I then rebooted and selected kernel 5.0.0-20 from GRUB menu. "uname -a" shows that I am using the previous kernel version: Linux pj 5.0.0-20-generic #21-Ubuntu SMP Mon Jun 24 09:32:09 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux With this kernel version as well as linux-headers-5.0.0.20, linux- headers-5.0.0-20-generic, my realtek wireless card works fine. While booted into 5.0.0-20 kernel, here are the realtek kernel modules that are loaded: # lsmod | grep r8 r8822be 692224 0 mac80211 806912 1 r8822be cfg80211 671744 2 mac80211,r8822be r8169 81920 0 Hopefully this realtek wireless regression can get fixed in the next minor kernel version. Let me know if you need any more information. Best Regards, Jun To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1838133/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
