Suspend fails in Kubuntu 18.04 but works fine in Kubuntu 17.10
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
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_
Ubuntu 4.15.0-
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: KDE
DistributionCha
# This is a distribution channel descriptor
# For more information see http://
canonical-
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=
ProcVersionSign
RelatedPackageV
linux-
linux-
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.
dmi.product.name: Latitude E7440
dmi.product.
dmi.sys.vendor: Dell Inc.
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1801743
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.