Just picked up a Lenovo Flex 14 with Ryzen 4500U. (loving the laptop btw!) Almost all hardware is working straight out of the box. There is no external GPU. Exceptions:
Fingerprint reader (vendor says they are working on linux support for later in 2020)
Bluetooth wont find my Logitech or Microsoft mice, but will find and pair with my speakers.
No HDMI output.
#3 is the only major bummer. I want to hook up to my 4k monitor for work. Nothing happens when in linux. Monitoring dmesg and syslog, there are no messages when plugging in or out the monitor. gpu-maganer.log indicates no kernel module is being loaded for the gpu.
My question: What is the best option to get an amd driver loaded? Newer mainline kernel? Is there a Pop kernel that has support for the built in gpu? I don’t want to lose support for everything that is already working…
Bluetooth issue resolved with a new wifi/bluetooth pcie card. Intel AX200 wifi 6 for $25 on amazon. I was starting seeing a lot of instability with my wifi after moving to the 5.7 generic kernel and the general consensus was that realtek card that came with the laptop was crap. Wifi is now very stable and bluetooth seems to be working. Both mice and my sony earbuds pair without issues. I also picked up a 512GB nvme drive and installed it at the same time I had the bottom off for the wifi card.
I didn’t end up copying the Pop Os kernel options and rolling my own; I just installed the ubuntu packages for 5.7 generic. I’ll have to wait and see but so far the generic 5.7 kernel is working good. 4k over hdmi is working now. I’m not much of gamer but installed CS:GO and 1080p with mid to high settings is playable. The new kernel also seems to have helped with the laptop properly suspending and resuming.