It seems everything started to fail after resume because the X server went away:
Okt 25 05:43:31 GS1 gnome-shell[1346]: gnome-shell: Fatal IO error 0 (Success) on X server :0. However Xorg did not crash. It just decided to shut down on system resume: Okt 25 05:43:31 GS1 /usr/lib/gdm3/gdm-x-session[1302]: (II) Server terminated successfully (0). Closing log file. I don't know why Xorg would decide to shut down on resume. Maybe it was a delayed reaction to using the power button? If you use the power button in a normal Linux console then indeed the normal behaviour is to shut down. Maybe the problem was that gnome-shell misinterpreted "Fatal IO error 0 (Success)" which then started the shutdown. ** Package changed: linux (Ubuntu) => gnome-shell (Ubuntu) ** Summary changed: - System freezes after suspend + Xorg terminates (cleanly) on resume from suspend ** Also affects: mutter (Ubuntu) Importance: Undecided Status: New ** Changed in: gnome-shell (Ubuntu) Status: Incomplete => New ** Also affects: xorg-server (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1797518 Title: System freezes after suspend Status in gnome-shell package in Ubuntu: Incomplete Status in mutter package in Ubuntu: Incomplete Status in xorg-server package in Ubuntu: Incomplete Bug description: Linux Version: 4.15.0-36-generic After login or during login the screen freezes. Mouse does not move any longer. Total crash/hang this is new since about 3 weeks or so. All updates are installed. I attached kern.log, about 9:14 this morning I had to reboot again. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18 Uname: Linux 4.15.0-36-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Fri Oct 12 09:30:00 2018 DistUpgraded: 2018-07-08 17:00:19,279 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: bionic DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation GK107 [GeForce GT 640 OEM] [10de:0fc0] (rev a1) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. GK107 [GeForce GT 640 OEM] [1043:8597] InstallationDate: Installed on 2018-05-28 (136 days ago) InstallationMedia: Ubuntu 16.04.4 LTS "Xenial Xerus" - Release amd64 (20180228) MachineType: ASUSTeK COMPUTER INC. M70AD ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic root=UUID=2fab21eb-af61-44eb-8a0a-f863dcc151ee ro quiet splash vt.handoff=1 SourcePackage: xorg UpgradeStatus: Upgraded to bionic on 2018-07-08 (95 days ago) dmi.bios.date: 03/19/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0802 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: M70AD dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0802:bd03/19/2014:svnASUSTeKCOMPUTERINC.:pnM70AD:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnM70AD:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.family: Desktop dmi.product.name: M70AD dmi.product.version: System Version dmi.sys.vendor: ASUSTeK COMPUTER INC. version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1 version.libdrm2: libdrm2 2.4.91-2 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2 xserver.bootTime: Mon Jul 9 17:58:45 2018 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.6-1ubuntu4 xserver.video_driver: nouveau To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1797518/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp