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Description of problem: When the screen dims after given idle time and automatic suspend is off it writes the the whole session to swap leading to about 3-5 minutes to be able to use desktop(in a 5400 RPM HDD). I have bypassed the problem by activating automatic suspend only on battery power, witch seems to prevent it even when plugged in. Prior to finding the above solution, I changed vm.swappiness to 10, but it had no effect. Version-Release number of selected component (if applicable): Fedora 23 Workstation x86_64 Gnome 3.18 gnome-control-center 3.18.2 How reproducible: Happened every time on my machine Steps to Reproduce: 1.Enable "Dim screen when inactive" power option and set any time(1 minute for quick testing) 2.Turn off "Automatic Suspend" option for both battery and plugged in 3.Wait a few minutes for screen to turn off Actual results: For a the few minutes after moving mouse or pressing any key laptop will be sluggish and most, if not, all of the session will be on swap, resulting in waiting for it load from disk to ram. Expected results: After key press or mouse toggle pc is in the exact state it was before dimming the screen with no part of the session being in swap. Additional info: HDD: 750 GB at 5400 RPM RAM: 4 GB Swappiness: 60 Swap partition: 4.2 GB This might be expected behavior but since the above workaround gave the results it did i concluded that its most probably a bug, so my apologies if it isn't. Also note that ram usage didn't exceed 1 GB
It happens for me too: every time when my fedora 23 goes into a sleep for more than about 3-5 minutes it looks like the memory is dropped to the swap. After that I have not a chance to wake it up - all it does is just constantly spinning the disks and probably goes into a hight CPU consumption as it's fan also actively rotates. The only way to get it back working is the hard reset. ASUS n76v notebook/Intel 2xHDD: 1TB RAM: 8GB Swappines: 1 (that was an experiment, cause it works really slow if it hardly uses the swapping, but that is another issue) Swap partition: 16GB Linux 4.4.6-301.fc23.x86_64 #1 SMP Wed Mar 30 16:43:58 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux As the system cannot be waken up after such a sleep without hard-rebooting it I would consider it as a bug. It looks like the issue has started appeared few updates before (for sure there were few kernel updates as well as gnome related updates) - but unfortunately I cannot tell for sure which update has caused the issue.
I have found another workaround/temporary solution: Disable all these options and use xset dpms for the blank screen functionality if thats what your after (ie. no lock after blank etc.), witch works for me.
Scratch the above, it seems xset dpms is causing the problem as well(or maybe its the source of it)
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Fedora 23 changed to end-of-life (EOL) status on 2016-12-20. Fedora 23 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.