I have a Lenovo Ideapad Y560 and have it set up with triple booting of Linux Mint 19.3, EndeavourOS with Deepin, and EndeavourOS with Cinnamon. I have both the built in Intel PCI WiFi card and an external USB WiFi adapter. The internal WiFi is kind of iffy, so I’ve blacklisted it (iwlwifi) from the kernel modules in /etc/modprobe.d on all 3 installs to get it out of the way and have rtl88x2bu driver installed on all 3 for the external usb adapter. What I’ve found is that EndevourOS with Deepin, seems slow connecting to my wifi (even being in the same room as the router). Once it does connect, every few minutes, it drops the connection, and then takes 30seconds to 1 minute to reconnect again. This continues while using this install. I’ve also tried with the built in PCI Wifi card and it does the same (and probably more often). Also tried with two other adapters (and installing the right drivers for them, rtl88xxau) and they behave the same way.
My Linux Mint 19.3 does not do this at all with the same set up. So I installed EndeavourOS with Cinnamon only (clean fresh install) and it behaves like Linux Mint with no problem (and it is using the exact same drivers from AUR like the Deepin version is using. As a side note, I also tried the beta (alpha really) of UbuntuDDE Linux and it behaved similar to the Deepin on EndevourOS with wifi disconnecting and really slow reconnecting.
I’m assuming NetworkManager between the different DE’s is the same. This seems like a Deepin issue to me, but really not sure where to look or what to check. I’d be happy to provide any logs or anything else you might want to help debug this.
Thanks! This is my first time working with Archlinux of any form, and I’m really enjoying it (at least the network of stability of the Cinnamon install, which is what I’m working on now to write this). Thanks for the work on EndeavourOS!