Recently I installed Ubuntu 20.04.3 LTS on an old Lenovo laptop (T61p). I was disappointed to discover that suspend did not work (as described in this report, black screen and no way to recover). I tried two version 5 kernels (5.13.0-27-generic and 5.8.0-43-generic).
As a wild guess I downloaded 4.19.0-041900-generic and suspend works for me with that kernel.
I would prefer to run a newer kernel but I need suspend.
Recently I installed Ubuntu 20.04.3 LTS on an old Lenovo laptop (T61p). I was disappointed to discover that suspend did not work (as described in this report, black screen and no way to recover). I tried two version 5 kernels (5.13.0-27-generic and 5.8.0-43-generic).
As a wild guess I downloaded 4.19.0- 041900- generic and suspend works for me with that kernel.
I would prefer to run a newer kernel but I need suspend.