Okay, so when I update a core from within Retroarch's updater it also doesn't work?
I've updated the cores from within retroarch, and while the others I've tried seem to work, dolphin does not.
Ok, I copied the file from the original RR and also overwrote it in /tmp - after a reboot Dolphin worked again.
For the record, I use a build from 2021.
Does WiFi work in the LibreELEC generic build? If not, I think there is a better chance asking there for support.
Well you have most likely stored a core in /storage/.config/retroarch/cores - /tmp/cores/ is gone after a reboot. So if you use any core provided by any other distro I can't guarantee that it's working.
Okay, so when I update a core from within Retroarch's updater it also doesn't work?
I've updated the cores from within retroarch, and while the others I've tried seem to work, dolphin does not.
Thanks, I've been using this build on my NUC8i3 for a few weeks now without issues.
I couldn't find any hints about this, but is it possible to adjust the screen resolution for Brave, specifically?
On my TV in kodi/libreelec I need to adjust the overscan otherwise parts are cut off. Also the font is tiny, even when I set it to large or extra large in the settings.
For movies thats more a nuisance than a problem, but when the address bar is partly invisible it makes it kinda difficult to browse! 
I've had some issues with passthrough before. Then it did help to disable and re-enable passthrough in the settings. There was a time when this workaround was required in older versions of LibreELEC (or even OpenELEC) - have you tried this?
Please keep us posted about the update procedure and whether it fixes the issues.
I've got a NUC8 i3 hooked up to an old AVR, so passthrough and whatnot isnt an issue for me. But once the AVR kicks the bucket it would be nice to know how to fix this problem.
*fingers crossed*
I have the same issue as the OP.
I am running LE 9.2 on a NUC8i3. I have a wired logitech gamepad that works well, and I can use a Nintendo Wii U Pro controller via Bluetooth just fine.
I can pair a wiimote via bluetooth and it acts fine in Kodi - I can control the menu and playback alright. In Retroarch it shows up as a controller, but none of the buttons have any effect. Not in the menu, or in any cores. (I have tried several Mame and Nintendo cores).
My next step is to replicate the issue while viewing the debug log to analyze it in detail. Since wiimotes are rather common this surprises me somewhat.
You could try the dual-audio patched versions, someone kindly has made builds of LibreELEC made available here: Index of /LibreELEC-DualAudio/Generic.x86_64
I'm running such a build on one of my boxes. But I do get a slight audio delay, depending on the combination of codecs and inputs. YMMV.
