Public bug reported: It seems that the Dell 9370 is set to go into s2idle mode rather than deep sleep, forgoing significant power savings.
I have confirmed this by suspending and then checking: sudo journalctl | grep "PM: suspend" | tail -2. If the output is PM: suspend entry (s2idle) PM: suspend exit cat /sys/power/mem_sleep showed [s2idle] deep As a temporary fix, I typed echo deep > /sys/power/mem_sleep as a root user (sudo -i). Then the output of cat /sys/power/mem_sleep was s2idle [deep] After suspending now, sudo journalctl | grep "PM: suspend" | tail -2 returns PM: suspend entry (deep) PM: suspend exit I have made this permanent by editing /etc/default/grub and replacing GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" with GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem_sleep_default=deep" then regenerating my grub configuration (sudo grub-mkconfig -o /boot/grub/grub.cfg). This appears to be working with no ill effects. Credit to https://askubuntu.com/a/1036122/470077 ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: linux-image-4.18.0-11-generic 4.18.0-11.12 ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12 Uname: Linux 4.18.0-11-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.10-0ubuntu13.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: aaron-work 3672 F.... pulseaudio /dev/snd/pcmC0D0p: aaron-work 3672 F...m pulseaudio Date: Tue Dec 18 09:52:44 2018 EcryptfsInUse: Yes HibernationDevice: RESUME=/dev/ubuntu-vg/swap_1 InstallationDate: Installed on 2018-09-04 (104 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 0489:e0a2 Foxconn / Hon Hai Bus 001 Device 002: ID 0bda:58f4 Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. XPS 13 9370 ProcEnviron: LANGUAGE=en_GB:en TERM=xterm-256color PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-11-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash mem_sleep_default=deep vt.handoff=1 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-4.18.0-11-generic N/A linux-backports-modules-4.18.0-11-generic N/A linux-firmware 1.175.1 SourcePackage: linux UpgradeStatus: Upgraded to cosmic on 2018-10-26 (52 days ago) dmi.bios.date: 08/09/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.5.1 dmi.board.name: 0F6P3V dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.5.1:bd08/09/2018:svnDellInc.:pnXPS139370:pvr:rvnDellInc.:rn0F6P3V:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9370 dmi.product.sku: 07E6 dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug cosmic -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1808957 Title: Dell XPS 13 (9370) defaults to s2idle sleep/suspend instead of deep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1808957/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
