I have the same issue. Unfortunately it's now Ubuntu 20.04 and kernel 5.4.0 and it still happens. My laptop is Lenovo Thinkpad T440p. First issue that was happening all the time was that the touchpad didn't work after waking from suspend. But it was better known issue with some fixes with the help of some scripts. This is harder as it's now happening always but only sometimes and I haven't figured out robust steps to reproduce this issue. It just happens sporadically but when it happens only hard reset helps. My laptop has also Intel CPU and nVidia graphics card so that's something that is common I suppose. If anything else is needed I could provide more information.
-- 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/1801743 Title: Suspend fails in Kubuntu 18.04 but works fine in Kubuntu 17.10 Status in linux package in Ubuntu: Confirmed Bug description: After upgrading to kubuntu 18.04 resuming from suspend fails in most cases on my laptop. When trying to resume the power LED is turned on, but the screen stays black and the system does not respond at all. Switching to another virtual terminal is not possible and closing the lid again does not show any effect. The hardware is a Dell Latitude e7440 with core i7 4600U and intel graphics only. The only way to change the status is a hard shut-down by long pressing the power button. The last message in kern.log is: PM: suspend entry (deep) The described problem is similar to bug #1774950. However, the latter is considered to be fixed with kernel 4.15.0-38 while my problem persists with this kernel. Output of 'sudo lspci -vnvn' is attached, the result of 'cat /proc/version_signature' is: Ubuntu 4.15.0-38.41-generic 4.15.18 --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: graeser 2116 F.... pulseaudio /dev/snd/controlC0: graeser 2116 F.... pulseaudio CurrentDesktop: KDE DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-precise-amd64-20130203-1 DistroRelease: Ubuntu 18.04 EcryptfsInUse: Yes HibernationDevice: RESUME=none InstallationDate: Installed on 2014-03-20 (1690 days ago) InstallationMedia: Ubuntu 12.04 "Precise" - Build amd64 LIVE Binary 20130203-13:50 MachineType: Dell Inc. Latitude E7440 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-38-generic root=UUID=25e09413-4977-401f-a034-0465b444518b ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-38-generic N/A linux-backports-modules-4.15.0-38-generic N/A linux-firmware 1.173.1 Tags: bionic Uname: Linux 4.15.0-38-generic x86_64 UpgradeStatus: Upgraded to bionic on 2018-10-15 (20 days ago) UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/02/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A14 dmi.board.name: 0WK2DM dmi.board.vendor: Dell Inc. dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA14:bd02/02/2015:svnDellInc.:pnLatitudeE7440:pvr01:rvnDellInc.:rn0WK2DM:rvr:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7440 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1801743/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp