found this thread of a user with the same problem in the lenovo forum: https://forums.lenovo.com/t5/Ubuntu/Lenovo-IdeaPad-5-PRO-14ILT6-Problem-with-video-driver/m-p/5109418?page=1#5483254 He made a video demonstrating the black screen problem. No solution though... and this one: very similar hardware and problem: https://forums.lenovo.com/t5/Ubuntu/Ubuntu-on-X1-Titanium-Yoga/m-p/5076885?page=3 they have a patch for kernel 5.12 - and the patch seems to be in linus kernel already. But then, why is it not working with 5.19 rc8?