Help. Kubuntu 20.04 reboots instead of shutting down. HP Zbook15 G2

[askhattio]

Hello everybody!
I hope you all are doing well.

I have recently changed the OS from Ubuntu 20.04 (GNOME GUI) to Kubuntu 20.04 (KDE Plasma) and Windows 10 with dualboot.

I had been using Kubuntu with no updates (even with no NVIDIA proprietary driver installed) for 2 weeks or so and never noticed any bugs. So I decided to update the system. Right after the update (used sudo apt update && sudo apt upgrade) I faced the following problem: machine turns off and then reboots in a second, thus leading me to the SDDM Login Screen.
I installed package named "laptop-mode-tools" and it solved the problem... for a while (1 week of adequate shutdown).

I am facing this problem of rebooting instead of shutdown again and nothing seems to work properly.
I tried using sudo shutdown now, but it didn't work.

I have to mention, I have Windows 10 installed as 2nd OS (dualboot), and it shutdowns the machine properly. More than that, I never faced this problem while using Ubuntu 20.04.

I suppose, you are probably interested in the result of inxi -Fxzd command to get started (hope that helps):

[FONT=monospace][COLOR=#5454ff][B]System:    Kernel:[/B][/COLOR][COLOR=#000000] 5.4.0-64-generic x86_64 [/COLOR][COLOR=#5454ff][B]bits:[/B][/COLOR][COLOR=#000000] 64 [/COLOR][COLOR=#5454ff][B]compiler:[/B][/COLOR][COLOR=#000000] gcc [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] 9.3.0 [/COLOR][COLOR=#5454ff][B]Desktop:[/B][/COLOR][COLOR=#000000] KDE Plasma 5.18.5  [/COLOR]
         [COLOR=#5454ff][B]Distro:[/B][/COLOR][COLOR=#000000] Ubuntu 20.04.1 LTS (Focal Fossa)  [/COLOR]
[COLOR=#5454ff][B]Machine:   Type:[/B][/COLOR][COLOR=#000000] Laptop [/COLOR][COLOR=#5454ff][B]System:[/B][/COLOR][COLOR=#000000] Hewlett-Packard [/COLOR][COLOR=#5454ff][B]product:[/B][/COLOR][COLOR=#000000] HP ZBook 15 G2 [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] A3009DD10303 [/COLOR][COLOR=#5454ff][B]serial:[/B][/COLOR][COLOR=#000000] <filter>  [/COLOR]
         [COLOR=#5454ff][B]Mobo:[/B][/COLOR][COLOR=#000000] Hewlett-Packard [/COLOR][COLOR=#5454ff][B]model:[/B][/COLOR][COLOR=#000000] 2253 [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] KBC Version 03.12 [/COLOR][COLOR=#5454ff][B]serial:[/B][/COLOR][COLOR=#000000] <filter> [/COLOR][COLOR=#5454ff][B]UEFI:[/B][/COLOR][COLOR=#000000] Hewlett-Packard  [/COLOR]
         [COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] M70 Ver. 01.24 [/COLOR][COLOR=#5454ff][B]date:[/B][/COLOR][COLOR=#000000] 04/17/2019  [/COLOR]
[COLOR=#5454ff][B]Battery:   ID-1:[/B][/COLOR][COLOR=#000000] BAT0 [/COLOR][COLOR=#5454ff][B]charge:[/B][/COLOR][COLOR=#000000] 33.8 Wh [/COLOR][COLOR=#5454ff][B]condition:[/B][/COLOR][COLOR=#000000] 49.1/49.1 Wh (100%) [/COLOR][COLOR=#5454ff][B]model:[/B][/COLOR][COLOR=#000000] Hewlett-Packard Primary  [/COLOR]
         [COLOR=#5454ff][B]status:[/B][/COLOR][COLOR=#000000] Discharging  [/COLOR]
[COLOR=#5454ff][B]CPU:       Topology:[/B][/COLOR][COLOR=#000000] Quad Core [/COLOR][COLOR=#5454ff][B]model:[/B][/COLOR][COLOR=#000000] Intel Core i7-4810MQ [/COLOR][COLOR=#5454ff][B]bits:[/B][/COLOR][COLOR=#000000] 64 [/COLOR][COLOR=#5454ff][B]type:[/B][/COLOR][COLOR=#000000] MT MCP [/COLOR][COLOR=#5454ff][B]arch:[/B][/COLOR][COLOR=#000000] Haswell [/COLOR][COLOR=#5454ff][B]rev:[/B][/COLOR][COLOR=#000000] 3  [/COLOR]
         [COLOR=#5454ff][B]L2 cache:[/B][/COLOR][COLOR=#000000] 6144 KiB  [/COLOR]
         [COLOR=#5454ff][B]flags:[/B][/COLOR][COLOR=#000000] avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx [/COLOR][COLOR=#5454ff][B]bogomips:[/B][/COLOR][COLOR=#000000] 44694  [/COLOR]
         [COLOR=#5454ff][B]Speed:[/B][/COLOR][COLOR=#000000] 1468 MHz [/COLOR][COLOR=#5454ff][B]min/max:[/B][/COLOR][COLOR=#000000] 800/3800 MHz [/COLOR][COLOR=#5454ff][B]Core speeds (MHz):[/B][/COLOR][COLOR=#5454ff][B]1:[/B][/COLOR][COLOR=#000000] 1421 [/COLOR][COLOR=#5454ff][B]2:[/B][/COLOR][COLOR=#000000] 1403 [/COLOR][COLOR=#5454ff][B]3:[/B][/COLOR][COLOR=#000000] 1401 [/COLOR][COLOR=#5454ff][B]4:[/B][/COLOR][COLOR=#000000] 1400 [/COLOR][COLOR=#5454ff][B]5:[/B][/COLOR][COLOR=#000000] 1398  [/COLOR]
         [COLOR=#5454ff][B]6:[/B][/COLOR][COLOR=#000000] 1574 [/COLOR][COLOR=#5454ff][B]7:[/B][/COLOR][COLOR=#000000] 1443 [/COLOR][COLOR=#5454ff][B]8:[/B][/COLOR][COLOR=#000000] 1465  [/COLOR]
[COLOR=#5454ff][B]Graphics:  Device-1:[/B][/COLOR][COLOR=#000000] Intel 4th Gen Core Processor Integrated Graphics [/COLOR][COLOR=#5454ff][B]vendor:[/B][/COLOR][COLOR=#000000] Hewlett-Packard [/COLOR][COLOR=#5454ff][B]driver:[/B][/COLOR][COLOR=#000000] i915  [/COLOR]
         [COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] kernel [/COLOR][COLOR=#5454ff][B]bus ID:[/B][/COLOR][COLOR=#000000] 00:02.0  [/COLOR]
         [COLOR=#5454ff][B]Device-2:[/B][/COLOR][COLOR=#000000] NVIDIA GK107GLM [Quadro K1100M] [/COLOR][COLOR=#5454ff][B]vendor:[/B][/COLOR][COLOR=#000000] Hewlett-Packard [/COLOR][COLOR=#5454ff][B]driver:[/B][/COLOR][COLOR=#000000] nvidia [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] 390.141  [/COLOR]
         [COLOR=#5454ff][B]bus ID:[/B][/COLOR][COLOR=#000000] 01:00.0  [/COLOR]
         [COLOR=#5454ff][B]Display:[/B][/COLOR][COLOR=#000000] x11 [/COLOR][COLOR=#5454ff][B]server:[/B][/COLOR][COLOR=#000000] X.Org 1.20.9 [/COLOR][COLOR=#5454ff][B]driver:[/B][/COLOR][COLOR=#000000] modesetting,nvidia [/COLOR][COLOR=#5454ff][B]unloaded:[/B][/COLOR][COLOR=#000000] fbdev,nouveau,vesa  [/COLOR]
         [COLOR=#5454ff][B]resolution:[/B][/COLOR][COLOR=#000000] 1920x1080~60Hz  [/COLOR]
         [COLOR=#5454ff][B]OpenGL:[/B][/COLOR][COLOR=#5454ff][B]renderer:[/B][/COLOR][COLOR=#000000] Quadro K1100M/PCIe/SSE2 [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] 4.6.0 NVIDIA 390.141 [/COLOR][COLOR=#5454ff][B]direct render:[/B][/COLOR][COLOR=#000000] Yes  [/COLOR]
[COLOR=#5454ff][B]Audio:     Device-1:[/B][/COLOR][COLOR=#000000] Intel 8 Series/C220 Series High Definition Audio [/COLOR][COLOR=#5454ff][B]vendor:[/B][/COLOR][COLOR=#000000] Hewlett-Packard  [/COLOR]
         [COLOR=#5454ff][B]driver:[/B][/COLOR][COLOR=#000000] snd_hda_intel [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] kernel [/COLOR][COLOR=#5454ff][B]bus ID:[/B][/COLOR][COLOR=#000000] 00:1b.0  [/COLOR]
         [COLOR=#5454ff][B]Device-2:[/B][/COLOR][COLOR=#000000] NVIDIA GK107 HDMI Audio [/COLOR][COLOR=#5454ff][B]vendor:[/B][/COLOR][COLOR=#000000] Hewlett-Packard [/COLOR][COLOR=#5454ff][B]driver:[/B][/COLOR][COLOR=#000000] snd_hda_intel [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] kernel  [/COLOR]
         [COLOR=#5454ff][B]bus ID:[/B][/COLOR][COLOR=#000000] 01:00.1  [/COLOR]
         [COLOR=#5454ff][B]Sound Server:[/B][/COLOR][COLOR=#000000] ALSA [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] k5.4.0-64-generic  [/COLOR]
[COLOR=#5454ff][B]Network:   Device-1:[/B][/COLOR][COLOR=#000000] Intel Ethernet I217-LM [/COLOR][COLOR=#5454ff][B]vendor:[/B][/COLOR][COLOR=#000000] Hewlett-Packard [/COLOR][COLOR=#5454ff][B]driver:[/B][/COLOR][COLOR=#000000] e1000e [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] 3.2.6-k [/COLOR][COLOR=#5454ff][B]port:[/B][/COLOR][COLOR=#000000] 6080  [/COLOR]
         [COLOR=#5454ff][B]bus ID:[/B][/COLOR][COLOR=#000000] 00:19.0  [/COLOR]
         [COLOR=#5454ff][B]IF:[/B][/COLOR][COLOR=#000000] enp0s25 [/COLOR][COLOR=#5454ff][B]state:[/B][/COLOR][COLOR=#000000] down [/COLOR][COLOR=#5454ff][B]mac:[/B][/COLOR][COLOR=#000000] <filter>  [/COLOR]
         [COLOR=#5454ff][B]Device-2:[/B][/COLOR][COLOR=#000000] Intel Wireless 7260 [/COLOR][COLOR=#5454ff][B]driver:[/B][/COLOR][COLOR=#000000] iwlwifi [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] kernel [/COLOR][COLOR=#5454ff][B]port:[/B][/COLOR][COLOR=#000000] 5000 [/COLOR][COLOR=#5454ff][B]bus ID:[/B][/COLOR][COLOR=#000000] 3d:00.0  [/COLOR]
         [COLOR=#5454ff][B]IF:[/B][/COLOR][COLOR=#000000] wlp61s0 [/COLOR][COLOR=#5454ff][B]state:[/B][/COLOR][COLOR=#000000] up [/COLOR][COLOR=#5454ff][B]mac:[/B][/COLOR][COLOR=#000000] <filter>  [/COLOR]
[COLOR=#5454ff][B]Drives:    Local Storage:[/B][/COLOR][COLOR=#5454ff][B]total:[/B][/COLOR][COLOR=#000000] 447.13 GiB [/COLOR][COLOR=#5454ff][B]used:[/B][/COLOR][COLOR=#000000] 29.20 GiB (6.5%)  [/COLOR]
         [COLOR=#5454ff][B]ID-1:[/B][/COLOR][COLOR=#000000] /dev/sda [/COLOR][COLOR=#5454ff][B]vendor:[/B][/COLOR][COLOR=#000000] Kingston [/COLOR][COLOR=#5454ff][B]model:[/B][/COLOR][COLOR=#000000] SA400S37480G [/COLOR][COLOR=#5454ff][B]size:[/B][/COLOR][COLOR=#000000] 447.13 GiB  [/COLOR]
         [COLOR=#5454ff][B]Optical-1:[/B][/COLOR][COLOR=#000000] /dev/sr0 [/COLOR][COLOR=#5454ff][B]vendor:[/B][/COLOR][COLOR=#000000] hp [/COLOR][COLOR=#5454ff][B]model:[/B][/COLOR][COLOR=#000000] DVDRW DU8A6SH [/COLOR][COLOR=#5454ff][B]rev:[/B][/COLOR][COLOR=#000000] DH61 [/COLOR][COLOR=#5454ff][B]dev-links:[/B][/COLOR][COLOR=#000000] cdrom,cdrw,dvd,dvdrw  [/COLOR]
         [COLOR=#5454ff][B]Features:[/B][/COLOR][COLOR=#5454ff][B]speed:[/B][/COLOR][COLOR=#000000] 24 [/COLOR][COLOR=#5454ff][B]multisession:[/B][/COLOR][COLOR=#000000] yes [/COLOR][COLOR=#5454ff][B]audio:[/B][/COLOR][COLOR=#000000] yes [/COLOR][COLOR=#5454ff][B]dvd:[/B][/COLOR][COLOR=#000000] yes [/COLOR][COLOR=#5454ff][B]rw:[/B][/COLOR][COLOR=#000000] cd-r,cd-rw,dvd-r,dvd-ram [/COLOR][COLOR=#5454ff][B]state:[/B][/COLOR][COLOR=#000000] running  [/COLOR]
[COLOR=#5454ff][B]Partition: ID-1:[/B][/COLOR][COLOR=#000000] / [/COLOR][COLOR=#5454ff][B]size:[/B][/COLOR][COLOR=#000000] 124.07 GiB [/COLOR][COLOR=#5454ff][B]used:[/B][/COLOR][COLOR=#000000] 10.77 GiB (8.7%) [/COLOR][COLOR=#5454ff][B]fs:[/B][/COLOR][COLOR=#000000] ext4 [/COLOR][COLOR=#5454ff][B]dev:[/B][/COLOR][COLOR=#000000] /dev/sda3  [/COLOR]
         [COLOR=#5454ff][B]ID-2:[/B][/COLOR][COLOR=#000000] /home [/COLOR][COLOR=#5454ff][B]size:[/B][/COLOR][COLOR=#000000] 191.23 GiB [/COLOR][COLOR=#5454ff][B]used:[/B][/COLOR][COLOR=#000000] 18.40 GiB (9.6%) [/COLOR][COLOR=#5454ff][B]fs:[/B][/COLOR][COLOR=#000000] ext4 [/COLOR][COLOR=#5454ff][B]dev:[/B][/COLOR][COLOR=#000000] /dev/sda4  [/COLOR]
         [COLOR=#5454ff][B]ID-3:[/B][/COLOR][COLOR=#000000] swap-1 [/COLOR][COLOR=#5454ff][B]size:[/B][/COLOR][COLOR=#000000] 24.79 GiB [/COLOR][COLOR=#5454ff][B]used:[/B][/COLOR][COLOR=#000000] 0 KiB (0.0%) [/COLOR][COLOR=#5454ff][B]fs:[/B][/COLOR][COLOR=#000000] swap [/COLOR][COLOR=#5454ff][B]dev:[/B][/COLOR][COLOR=#000000] /dev/sda2  [/COLOR]
[COLOR=#5454ff][B]Sensors:   System Temperatures:[/B][/COLOR][COLOR=#5454ff][B]cpu:[/B][/COLOR][COLOR=#000000] 63.0 C [/COLOR][COLOR=#5454ff][B]mobo:[/B][/COLOR][COLOR=#000000] 48.0 C [/COLOR][COLOR=#5454ff][B]gpu:[/B][/COLOR][COLOR=#000000] nvidia [/COLOR][COLOR=#5454ff][B]temp:[/B][/COLOR][COLOR=#000000] 49 C  [/COLOR]
         [COLOR=#5454ff][B]Fan Speeds (RPM):[/B][/COLOR][COLOR=#000000] N/A  [/COLOR]
[COLOR=#5454ff][B]Info:      Processes:[/B][/COLOR][COLOR=#000000] 241 [/COLOR][COLOR=#5454ff][B]Uptime:[/B][/COLOR][COLOR=#000000] 16m [/COLOR][COLOR=#5454ff][B]Memory:[/B][/COLOR][COLOR=#000000] 23.16 GiB [/COLOR][COLOR=#5454ff][B]used:[/B][/COLOR][COLOR=#000000] 1.87 GiB (8.1%) [/COLOR][COLOR=#5454ff][B]Init:[/B][/COLOR][COLOR=#000000] systemd [/COLOR][COLOR=#5454ff][B]runlevel:[/B][/COLOR][COLOR=#000000] 5  [/COLOR]
         [COLOR=#5454ff][B]Compilers:[/B][/COLOR][COLOR=#5454ff][B]gcc:[/B][/COLOR][COLOR=#000000] 9.3.0 [/COLOR][COLOR=#5454ff][B]clang:[/B][/COLOR][COLOR=#000000] 10.0.0-4ubuntu1 [/COLOR][COLOR=#5454ff][B]Shell:[/B][/COLOR][COLOR=#000000] bash [/COLOR][COLOR=#5454ff][B]v:[/B][/COLOR][COLOR=#000000] 5.0.17 [/COLOR][COLOR=#5454ff][B]inxi:[/B][/COLOR][COLOR=#000000] 3.0.38 [/COLOR]
[/FONT]

Hope we can find a solution and thank you in advance.

[claydoh]

It probably won't fix things (but it might)
But be sure when updating via the command one to use apt full-upgrade, else you run the chance of not having all updates installed.

This could be from a recent kernel upgrade, to the newer 5.8. You can try selecting a previous version of your 5.4 kernel via the Grub boot menu, and see if there is any difference, if properly updating does not fix things.

[claydoh]

Ok, for some troubleshooting:

Are you using the gui or the power button to attempt to shut down?

With dual graphics, are you using the on-board or the dedicated Nvidia - sometimes this is solved by installing the proprietary Nvidia drivers.

Try these commands and see if they shut the laptop off correctly

sudo shutdown -h now

or

shutdown -P now

[askhattio]

Thank you very much for your answer.
I tried

sudo apt full-upgrade

, but it didn't change anything.

The first command

 sudo shutdown -h now

didn't work out on the kernel 5.4.0-64 - it rebooted.
but the command

shutdown -P now

managed to power the laptop off properly

After that I tried to boot with older kernel in grub. It shuts down properly (managed to shut down properly 5 times).
I guess it works fine so far.

But what could possibly be reason? Newer kernel bug, laptop power controller?
I would be thankful for any hint or idea, cause this appears to be quite unpredictable behavior for shutting down process.

It probably won't fix things (but it might)
But be sure when updating via the command one to use apt full-upgrade, else you run the chance of not having all updates installed.

This could be from a recent kernel upgrade, to the newer 5.8. You can try selecting a previous version of your 5.4 kernel via the Grub boot menu, and see if there is any difference, if properly updating does not fix things.

[askhattio]

answering your questions,

I usually use GUI and/or shutdown now command
I am using Nvidia proprietary driver 390.141

Thank you for your advice on full-upgrade command - I will use this one next time

[claydoh]

After that I tried to boot with older kernel in grub. It shuts down properly (managed to shut down properly 5 times).
I guess it works fine so far.

But what could possibly be reason? Newer kernel bug, laptop power controller?
I would be thankful for any hint or idea, cause this appears to be quite unpredictable behavior for shutting down process.

Not sure, usually these, in your case, are minor updates that provide mainly security fixes, so only have the most minimal of changes.
It would take some research.