Same here, I have a Lenovo X13, also with an AMD 4750U. Screen shows random noise after suspend/resume with 5.13 kernel. Reverting back to 5.11 kernels removes the problem. I also installed a 5.15 kernel and here, things are also working again.
Might be related to this: https://gitlab.freedesktop.org/drm/amd/-/issues/1783 Unfortunately, the 5.15 kernel is no option for me as Virtualbox DKMS doesn't compile the drivers (due to newer glibc used in the 5.15 kernel compared to Ubuntu 20.04) ** Bug watch added: gitlab.freedesktop.org/drm/amd/-/issues #1783 https://gitlab.freedesktop.org/drm/amd/-/issues/1783 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1950339 Title: Screen stays black after going idle or waking up from suspend on AMD laptop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1950339/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
