Hello!
I use ubuntu 18.04.
Kernel Ubuntu 4.15.0-73.82+lp1854798+2-generic 4.15.18 (problem exists on previous kernels too)
KDE from the repo
Screen is extended to external monitor
laptop Lenovo Carbon 6x
Monitor attached with HDMI
Monitor model: Acer H236HL
When the screen is locked by timeout, after unlocking by entering password, KDE panel disappears on external monitor. I can not add a panel to it, e.g. I add it to screen but the panel does not appear. After reboot panel is in place. If I have added panels to screen they are also exist.
It is interesting that this problem exists with only my monitor. Other monitors attached to my laptop work OK. The problem also does not exist if I turn my monitor off before screen lock.
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ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: andrew 2726 F.... pulseaudio
CurrentDesktop: KDE
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=f52c7f84-717f-47b3-82c8-99ef8ff44b4d
InstallationDate: Installed on 2018-09-17 (462 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: LENOVO 20KH006JRT
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-73-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash mem_sleep_default=deep vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-73.82+lp1854798+2-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-73-generic N/A
linux-backports-modules-4.15.0-73-generic N/A
linux-firmware 1.173.12
Tags: bionic
Uname: Linux 4.15.0-73-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip libvirt lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 08/31/2018
dmi.bios.vendor: LENOVO
dmi.bios.version: N23ET55W (1.30 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20KH006JRT
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN23ET55W(1.30):bd08/31/2018:svnLENOVO:pn20KH006JRT:pvrThinkPadX1Carbon6th:rvnLENOVO:rn20KH006JRT:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad X1 Carbon 6th
dmi.product.name: 20KH006JRT
dmi.product.version: ThinkPad X1 Carbon 6th
dmi.sys.vendor: LENOVO
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 1857418
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.