4 ms·

Hibernation success also depends on device driver support and so many devices don't correctly support hibernation, for example, by failing to come back to life

• jauntywundrkind 3y ago
  Does it? Not really? This is one of the best parts about hibernation. Shutting down is saving state. Booting? The kernel starts booting as usual, entirely the same as a normal boot. It gets quite far along, has already loaded a bunch of drivers, and then it finds the hibernation state & loads that. Where-as with most s3 and s2idle suspends, there really is a lot of system level bios support required to make things happen. Many systems just do it wrong, not to spec, or desktops often not at all. These are non-issues in hibernation. To your point though, I did have a laptop on which the wifi would disappear every other hibernation. I'd tend to hibernate it, immediately wake it up, and hibernate again, so when I really turned it on it would be good to go. For a while I had been packing a USB wifi card because I hadn't put it together. So yeah I've seen issues. A kernel upgrade half a decade ago seemed to have fixed that, but yeah I guess it's some evidence of problems. Still, the amount of time I've spent trying to get systems to suspend has been long & sad & difficult, with little evidence of what's happening. Hibernation has been a pretty reliable & consistent tool that I feel like I can almost always rely on.
• deleted 3y ago
  [deleted]