On Wed 2015-07-01 13:53:31, Ville Syrjälä wrote: > On Wed, Jul 01, 2015 at 11:51:27AM +0200, Pavel Machek wrote: > > > > > - Embedded panels have a well defined shutdown sequence. We > > don't > > > > > > > have > > > > > any good reason to not follow this, in fact for some panels the > > > > > subsequent reinitialization could be problematic in case of a hard > > > > > power-off. (Thanks to Jani for this info) > > > > > > > > Please cite concrete example. I have yet to see machine that would not > > > > power up on forced power down. In fact, I argue that such machine > > > > would be very broken, and that such machine does not exist. While we > > > > have these real machines broken: > > > > > > > > > + * Lenovo Thinkpad X301, X61s, X60, T60, X41 > > > > > + * Fujitsu FSC S7110 > > > > > + * Acer Aspire 1830T > > > > > > > > What makes you think that BIOS writers will do something different for > > > > Gen6+ hardware? X301 is not that old. > > > > > > Thinkpad X1 Carbon (IVB) is perfectly happy with the D3, so clearly > > > something changed for Lenovo at least. And most machines (old and new) > > > have no problems whatsoever with the D3. > > > > Well, one machine being happy does not matter that much... > > I said most machines, not one. > > > as going to > > D3 has no real benefits. > > Sure it does. Eventually we'll want to avoid resuming runtime suspended > devices when entering system suspend. For broken machines we'd need to > resume the GPU at that point. You want to optimize transition between suspend-to-RAM and hibernation? No? I thought so. So no benefits, 7 real, broken machines. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
