I have not had an issue with sleep mode in Linux since ~2007 or so. (In the early days, it basically didn't work at all)
I've had an XPS 13 9360 for two and a half years now, and an x230 for roughly four years before that. Before then it was a range of cheapo laptops, and while the touchpads and keyboards sucked, sleep mode was fine starting in the late aughts.
I can attest that it took a little while for sleep mode to function at all though. It was a non starter (not intended) in the mid 2000s, but the problems you describe has never been a problem I've had.
I've had an XPS 13 9360 for two and a half years now, and an x230 for roughly four years before that. Before then it was a range of cheapo laptops, and while the touchpads and keyboards sucked, sleep mode was fine starting in the late aughts.
I can attest that it took a little while for sleep mode to function at all though. It was a non starter (not intended) in the mid 2000s, but the problems you describe has never been a problem I've had.