Bug #2017277 “Regression: 6.1.0.9-1009 causes RTL8852BE WiFi to ...” : Bugs : linux-oem-6.1 package : Ubuntu
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The 6.1 OEM kernel contains backported (from 6.2) support for the RTL8852BE wireless adapter. This has worked fine on my laptop since the support was backported. The latest release, 6.1.0.9-1009 is causing my adapter to occasionally stop working completely. The WiFi disconnects, and GNOME tells me an adapter cannot be found. A reboot is required to get the internet working again. This has happened twice. Running `dmesg` reports a lot of error messages with the adapter - find the output in ...

Continued From: https://startrek.website/post/13283869 https://startrek.website/post/14075369

I managed to fix the one biggest gripe about my Thinkpad E16: the RTL8852BE Wi-Fi controller randomly dropping out. I actually found this a few days ago, but I had forgotten where I put the file I had edited. You put a file in modprobe.d called 70-rtw89.conf. Both /etc/modprobe.d/ and /usr/lib/modprobe.d work - I used the latter, but for the sake of conventions, you should probably use the former.

You then put in these options for the rtw89 module: options rtw89_pci disable_clkreq=y disable_aspm_l1=y disable_aspm_l1ss=y

Now, my Thinkpad is a fully functional Linux laptop. I will be docking it to an 8 from my initial score of 8.5, but I’m back to liking it for now. If you apply the fix, be sure to update the firmware as well - some older distros have an old version that works but returns a lot of journalctl error on this card.

Update: What do you know! The updated firmware-realtek just went into backports!

Thanks, https://bugs.launchpad.net/ubuntu/+source/linux-oem-6.1/+bug/2017277

  •  noddy   ( @noddy@beehaw.org ) 
    1•6 days ago

    Oh that’s good then. I think they stopped using whitelists a while ago, so if it is slotted you can probably replace it with anything. Maybe they reversed course on soldered modules then, or perhaps it only applied to some models. I looked into specs of the T16 at some point, and that one had soldered wifi module.