Finding Slowdowns In Linux's Suspend/Resume Process

[Leinad]

I could not agree more.
Performance is nothing if the featureset is broken.
I have so many issues with suspend/resume on various laptops its borderline ridiculous.
The current Broadwell machine for example won't wake external monitors if attached to a dock. Sometimes I loose dock functionality.
(Probably Intel crap GPU drivers anyway. I just like to pin it on Intel since their drivers is mostly shit.)

I was hit by this issue too. Unfortunately there is no fully Broadwell working kernel. Till 3.18 sleep and resume in dock works, but there are many kernel lockups on Broadwell. From 3.19 is broken resume from sleep. From 4.0 still broken resume, but lockups are fixed. From 4.1 second attached monitor blinks off and on every minute.

[caligula]

On my Haswell the Intel 802.11ac wifi dies (doesn't connect to AP anymore) if I suspend for the night. Rebooting helps. It also sometimes does some wacky things with screensaver, quickly revealing the desktop before showing the lock screen. It also quite often wakes from sleep in the bag.