I honestly tried my best to debug it. I installed different tools, and at some point it seemed to work, but after some time, due to some updates, it broke down. Some time after this, I just stopped using sleep mode. It was easier to turn on/off the whole machine.
XPS13 which I have is one of the most widely used linux laptops, and it a symptomatic that it doesn't work well.
XPS13 which I have is one of the most widely used linux laptops, and it a symptomatic that it doesn't work well.