Created attachment 163191 [details] (hopefully) relevant log entries when I tried to resume When I opened the laptop lid the system resumed but the UI was completely unresponsive: display showed old contents but no visible mouse pointer, did not react to keyboard. It's not entirely reproducible but happens often enough to be quite annoying (I guesstimate there is a chance of 1/3). I started to notice this behavior about a month ago (about the time when 3.17 was added to Fedora). Automated Fedora bug report is available under https://bugzilla.redhat.com/show_bug.cgi?id=1180866.
forgot to add some info about my system: lspci | grep -i gm965: 00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c) 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 0c) 00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (secondary) (rev 0c) So, yes this chipset is somewhat aging by now but it used to work so I consider this a regression :-)
The good news is that I don't see the issue anymore with Fedora's 3.18.3 kernel (FEDORA-2015-0937) :-)