On Tue, Feb 17, 2009 at 02:19:13PM -0800, Jesse Barnes wrote: > On Tuesday, February 17, 2009 2:04 pm Matthew Garrett wrote: > > On Tue, Feb 17, 2009 at 01:57:17PM -0800, mark gross wrote: > > > Putting the wake on key event issue aside, is it possible to have wake > > > up's on the ms time scale? I ask because I thought the XO did exactly > > > this (but left the screen live). Why does it take 20 sec to get into > > > or out of S3 on my laptop? > > > > Graphics reinit, dumping graphics contents back into RAM, us resuming > > devices in series, that kind of thing. On some hardware you'll spend a > > noticable amount of time in the BIOS before any of the Linux resume code > > gets touched. I thought the XO had got sub second, but I wasn't sure > > that they were in the low ms range. > > IME a good chunk of it is BIOS time. On my x200s resume is very fast (on the > order of a second or two though I haven't measured), while on my Eee and T61 > machines it's much slower, even though they're all using Intel gfx. > > Of course we should really be shooting for sub-second times or about the time > it takes you to open your lid (or even much faster in the case of demand > suspend/resume for servers/desktops). yeah I was thinking vertical blank refresh times. We would need a state where the graphics stayed on somehow too. --mgross _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
