It isn't that sleep works reliable on OSX, it's that sleep works reliably on a Mac.
You see, when you buy a Mac you know every feature (including sleep) has been tested thoroughly. When you decide to install an OS on a computer you already own, you put the onus to test on yourself. I don't understand why people continue to make this unfair comparison. If you want a linux computer where sleep just works, by a preinstalled linux computer. System76 makes fantastic ones. They thoroughly test every feature. They test when new versions of Ubuntu get released. You'll have the same experience you have when buying a Mac or when buying an HP.
Are there any major PC manufacturers that ship with Ubuntu? I imagine the day you go to Sams and buy an Ubuntu system will be a big milestone for Linux.
I see 4 laptops and 1 netbook at http://www.dell.com/us/business/p/laptops#facets=80770~0~179... (use OS filter if link doesn't apply) different models running 9.10, 10.04, 10.10. For some reason the link on dell.com/ubuntu only shows the two Latitudes, not the three Inspirons.
Not major manufacturers, but also see Zareason and System76.
Even dedicated Ubuntu system providers like System76 run into hardware problems.
Ubuntu 10.04 removed (previously working) support for System76 Starling Netbook wireless cards. It was several months before they had a workaround, allowing their customers to finally upgrade to 10.04 just in time for 10.10. System76 then said they felt 10.10 was not ready for their Netbooks, and said their users should remain on 10.04 until further notice. That post was stickied until yesterday.
It may be an unfair comparison, but it's still very relevant (although on the other hand you do have a point- there are preinstalled systems you can buy the same way you would with OS X or Windows).
That's a good point. I actually had sleep working really well on 9.04 then upgraded to 10.04 and it broke. It's that type of pattern and the frustration that is worth the premium Apple tax I guess.
You see, when you buy a Mac you know every feature (including sleep) has been tested thoroughly. When you decide to install an OS on a computer you already own, you put the onus to test on yourself. I don't understand why people continue to make this unfair comparison. If you want a linux computer where sleep just works, by a preinstalled linux computer. System76 makes fantastic ones. They thoroughly test every feature. They test when new versions of Ubuntu get released. You'll have the same experience you have when buying a Mac or when buying an HP.