On Sat, Aug 31, 2013 at 04:02:16PM -0700, Linus Torvalds wrote:
Hmm. I just updated my machine to a i7-4770S (kept everything else the same, just switched out motherboards), and now when my display goes to sleep, it seems to never come back.
Sleep as in dpms off ($ xset dpms force off) or sleep as in system suspend?
Any known issues with DVI on Haswell (it seems to show up as "HDMI1" as the output, but it's a DVI cable)? I need to get a DP cable anyway (right now I'm driving my 2560x1440 display at 32Hz due to DVI crap) and maybe that will fix things, but this happens even if I don't force that odd mode (so it maxes out at 1920x1200 or whatever).
I doubt this is new, but I've only ever run current -git on this machine, so who knows.. The machine ends up being kind of unusable. I guess I can just turn off power save.
Hm, doesn't ring a bell here. Adding Paulo, our residential hsw display expert.
Aside hsw hdmi ports support 300MHz dotclocks, but still only single-link. So I guess your dvi screen is still out of luck since it likely wants a dual-link dvi signal. But if you have a hdmi port it should work a bit better (hdmi pumped up the max dotclock a bit already a while ago ...).
Cheers, Daniel