I have the exact same device as the OP and followed the same upgrade path. Prior to upgrading to Focal, suspend used deep sleep. Now it uses s2idle, with considerable adverse effects on battery life.
Cutting and pasting from journalctl output: ... Apr 01 12:20:47 XPS-13-linux kernel: PM: suspend entry (deep) Apr 01 14:00:23 XPS-13-linux kernel: PM: suspend exit Apr 01 17:40:10 XPS-13-linux kernel: PM: suspend entry (deep) Apr 01 18:51:04 XPS-13-linux kernel: PM: suspend exit Apr 04 19:37:39 XPS-13-linux kernel: PM: suspend entry (s2idle) Apr 04 21:21:08 XPS-13-linux kernel: PM: suspend exit Apr 04 22:15:33 XPS-13-linux kernel: PM: suspend entry (s2idle) Apr 05 05:03:52 XPS-13-linux kernel: PM: suspend exit Apr 05 11:35:00 XPS-13-linux kernel: PM: suspend entry (s2idle) Apr 05 12:21:48 XPS-13-linux kernel: PM: suspend exit Apr 05 12:40:56 XPS-13-linux kernel: PM: suspend entry (s2idle) Apr 05 13:58:44 XPS-13-linux kernel: PM: suspend exit Apr 05 14:44:53 XPS-13-linux kernel: PM: suspend entry (s2idle) Apr 05 15:23:53 XPS-13-linux kernel: PM: suspend exit -- 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/1860390 Title: Dell XPS 13 (9360) defaults to s2idle sleep/suspend instead of deep (suspend to ram) Status in linux package in Ubuntu: Confirmed Bug description: This is a reintroduction of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1808957 which I am experiencing with Ubuntu 20.04 fully upgraded on a Dell XPS 13 9360. This did not happen before in Ubuntu 19.04 nor in Ubuntu 19.10 (Eoan), so this issue is affecting Ubuntu kernels >= 5.4. It seems that the Dell 9360 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 update-grub). --- ProblemType: Bug AlsaVersion: Advanced Linux Sound Architecture Driver Version k5.4.0-9-generic. ApportVersion: 2.20.11-0ubuntu15 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC3246 Analog [ALC3246 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: user 1570 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xdc228000 irq 131' Mixer name : 'Realtek ALC3246' Components : 'HDA:10ec0256,1028075b,00100002 HDA:8086280b,80860101,00100000' Controls : 55 Simple ctrls : 17 CurrentDesktop: GNOME DistroRelease: Ubuntu 20.04 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 002: ID 8087:0a2b Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Lsusb-t: /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M |__ Port 3: Dev 2, If 0, Class=Wireless, Driver=btusb, 12M |__ Port 3: Dev 2, If 1, Class=Wireless, Driver=btusb, 12M MachineType: Dell Inc. XPS 13 9360 Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-5.4.0-9-generic root=UUID=be0fafa9-2c93-4717-bc39-06d8bbf0a232 ro rootflags=subvol=@ resume=UUID=9b786c9e-5b9c-4651-bc7a-85faf191166c quiet splash i915.enable_psr=2 i915.enable_fbc=1 i915.enable_psr=2 i915.enable_fbc=1 mem_sleep_default=deep vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-9.12-generic 5.4.3 RelatedPackageVersions: linux-restricted-modules-5.4.0-9-generic N/A linux-backports-modules-5.4.0-9-generic N/A linux-firmware 1.184 Tags: focal Uname: Linux 5.4.0-9-generic x86_64 UnreportableReason: This report is about a package that is not installed. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: cdrom lp lpadmin plugdev sudo WifiSyslog: _MarkForUpload: False dmi.bios.date: 11/14/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 2.13.0 dmi.board.name: 04N87K dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr2.13.0:bd11/14/2019:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn04N87K:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.family: XPS dmi.product.name: XPS 13 9360 dmi.product.sku: 075B dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1860390/+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
