Created attachment 869661 [details] dmesg from 3.11.10-301.fc20 kernel Description of problem: All kernels newer than 3.11.10-301.fc20.x86_64 regularly (but not 100% of the time) fail to wake up from suspend (to RAM). Nothing gets logged to /var/log/messages. Version-Release number of selected component (if applicable): 3.13.4-200.fc20.x86_64 How reproducible: Most of the time. Steps to Reproduce: 1. Boot any kernel newer than 3.11.10-301.fc20 2. Suspend using System->Shutdown->Suspend (I'm using MATE) 3. Press the power button to wake up Actual results: Screen lights up, but there's no output on any of the two connected monitors, not even a blinking cursor. Expected results: Normal wake-up to desktop.
Created attachment 869662 [details] dmesg from 3.13.4-200.fc20 kernel
I have this to now but from 3.14. It used to work but now it only sometimes work. I don't know whatever you've upgraded something else / whatever something else can be responsible. I do run Firefox (and Flash) and Chrome and have no idea if either of those can interact with it and in that case whatever it happen with both. 3.14.3-200.fc20.x86_64 on ASUS M3A-H/HDMI.
My issue seems to be gone with 3.14+, so yours is probably a different one. Please open a new bug report and provide your details. I'm closing this one.