Thanks you again for investigating this. It has been difficult to find similar cases because I do not really know how to describe the problem in English, making it difficult to use search engines.
I tried rdmsr -a 0x19a and it gives back 0 as seems to be normal. Here are the logs you suggested to make. I do not understand them all in depth, but the dstat log clearly indicates that on resuming, the swap contains 392 MB more data than before hibernating, and that this data is being put back into RAM. This is completely consistent with the symptoms. ** Attachment added: "freezeslow.dstat" https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1675683/+attachment/4867692/+files/freezeslow.dstat -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pm-utils in Ubuntu. https://bugs.launchpad.net/bugs/1675683 Title: Computer sluggish/irresponsive for several minutes after hibernation Status in pm-utils package in Ubuntu: New Bug description: Hi, my computer is very sluggish for a good five minutes after thawing from hibernation. Booting the system and the thawing process in itself seems to run fine : the console displays the progress of reloading contents into RAM at a satisfying pace, then the lightdm unlock interface displays. From this point on, things become strange : the computer has an constant and intense hard drive activity and applications do not respond to input in a swift manner (moving the mouse cursor works in "real time" though, and the clock, which displays seconds, also works almost normally). This reminds me of what happens when you set focus back to an application that had been paged to swap : it is irresponsive until it is back in RAM. Except this happens for all applications at once. This stops after several minutes (more than five) and the computer becomes usable again. I experienced the problem today again. The current RAM usage is 7.2 Gio / 15.6 Gio and swap usage is 4.2 Gio / 31.3 Gio. Main memory usage is : firefox 3.4 Gio firefox (other instance) 1.7 Gio thunderbird 624 Mio xfwm4 213 Mio Hibernation with TuxOnIce did not induce this problem (I am not using it currently due to mismanagement of video drivers). ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: pm-utils 1.4.1-16 ProcVersionSignature: Ubuntu 4.4.0-67.88-generic 4.4.49 Uname: Linux 4.4.0-67-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2.5 Architecture: amd64 CurrentDesktop: XFCE Date: Fri Mar 24 09:20:15 2017 InstallationDate: Installed on 2016-09-07 (197 days ago) InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) PackageArchitecture: all SourcePackage: pm-utils UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1675683/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
