Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc1/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1789018 Title: /sys/power/state miss "disk" Status in linux package in Ubuntu: Incomplete Bug description: cat /sys/power/state freeze mem As a result, hibernate-disk is failed to work. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-33-generic 4.15.0-33.36 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 Uname: Linux 4.15.0-33-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ming 1501 F.... pulseaudio CurrentDesktop: XFCE Date: Sat Aug 25 22:42:04 2018 HibernationDevice: RESUME=UUID=6c3eb510-861e-4d9a-9009-0c5b62d57105 InstallationDate: Installed on 2018-08-11 (13 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 004: ID 1c7a:0570 LighTuning Technology Inc. Bus 001 Device 003: ID 04f2:b5c5 Chicony Electronics Co., Ltd Bus 001 Device 002: ID 8087:0a2a Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Acer Swift SF314-54 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=8e486299-4bbf-4041-8cae-502b7f7e6c5c ro splash resume=UUID=6c3eb510-861e-4d9a-9009-0c5b62d57105 RelatedPackageVersions: linux-restricted-modules-4.15.0-33-generic N/A linux-backports-modules-4.15.0-33-generic N/A linux-firmware 1.173.1 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/25/2018 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V1.07 dmi.board.name: Strongbow_KL dmi.board.vendor: KBL dmi.board.version: V1.07 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.07 dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.07:bd05/25/2018:svnAcer:pnSwiftSF314-54:pvrV1.07:rvnKBL:rnStrongbow_KL:rvrV1.07:cvnAcer:ct10:cvrV1.07: dmi.product.family: Swift 3 dmi.product.name: Swift SF314-54 dmi.product.version: V1.07 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789018/+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
