Comment 52 for bug 121653

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Philipp Kern (pkern) wrote : Re: [gutsy] Suspend to Ram does not work on Z61m

Compiz does not count as that won't run out-of-the-box with fglrx anyway. And as said, if you need 3D acceleration you could use it, but you can't use suspend.

The response would indeed be different if the source code had been available. Then the kernel devs would be willing to debug it. If you look at how suspend debugging works you would understand why this is difficult even with a driver where source is available (storing information in RTC). And it seems impossible with a binary blob.

Complain to ATI please. It seems that they did not even respond to the Ubuntu Kernel devs, or claimed that the thing they do is valid. At least you can't find any claims that the SLUB allocator is wrong.