Hi,


My KDE Plasma panel has disappeared upon a reboot. This is the second time this happens. Previous time was last week and it ‘fixed’ itself a day later due to unknown causes.

Even when I try to add a (new) panel, nothing happens. Previously, when my panel appeared again, the new panels I had tried adding also appeared. I looked at my logs (systemd journal) and nothing appears when I try to add a panel.

In case anyone has experience with this kind of thing or can help diagnose the cause, I would really appreciate your help.


Best,

Erik

A little bit more information would be helpful:
Which exact Plasma version?
Which Plasma theme do you use?
Are you talking about the regular panel?
if yes, is it configured to be always visible?

Mamarok wrote:Which exact Plasma version?

Plasma 5.17.4, Frameworks 5.64.0, KDe Apps 19.08.3, Qt 5.13.2

Mamarok wrote:Which Plasma theme do you use?

Breeze

Mamarok wrote:Are you talking about the regular panel?

Yes, I think so, with apps like the clock, menu, notifications, etc.

Mamarok wrote:if yes, is it configured to be always visible?

No, auto-hide. (That is not the problem.)

It just happened again, now in a running session. Again, no clues in the logs. I have been using Plasma 5 without this problem since it was stabilized on Gentoo, so for years. I was hoping that someone else had encountered it before and knew a fix. Googling hasn't helped me, the results are always about different issues.

What did you do exactly when this happened? I have never seen this happening, but I do not have it in auto-hide. Maybe an update to Plasma 5.17.5 could be a start..

I am encountering the same issue. I use Manjaro Linux 18.1.5.

I can work around it by deleting

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~/.config/plasma-org.kde.plasma.desktop-appletrc

, but it will come back after updates. I have not been able to isolate the problem more narrowly than these steps:

1) Do a "large" system update; generally includes the kernel. For example, this pending update looks like it might cause the issue

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:: Synchronizing package databases...
 core                                                              167.9 KiB   542 KiB/s 00:00 [########################################################] 100%
 extra                                                            1970.7 KiB  5.96 MiB/s 00:00 [########################################################] 100%
 community                                                           5.8 MiB  11.1 MiB/s 00:01 [########################################################] 100%
 multilib                                                          192.5 KiB  9.40 MiB/s 00:00 [########################################################] 100%
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...

Packages (56) ansible-2.9.4-1  ca-certificates-20181109-3  ca-certificates-mozilla-3.49.2-1  ca-certificates-utils-20181109-3  dbeaver-6.3.3-1
              dbus-1.12.16-5  docker-compose-1.25.3-1  electron-7.1.10-1  etckeeper-1.18.14-1  ffmpeg-1:4.2.2-2  grub-2.04-10  gst-plugins-bad-1.16.2-2
              gst-plugins-good-1.16.2-2  intel-media-sdk-19.4.0-4  lib32-alsa-lib-1.2.1.2-2  lib32-dbus-1.12.16-2  lib32-nss-3.49.2-1
              lib32-p11-kit-0.23.19-1  lib32-util-linux-2.35-1  libmfx-19.4.0-4  libsecret-0.20.0-1  libutil-linux-2.35-1  libuv-1.34.2-1  lilv-0.24.6-2
              linux54-5.4.14-2  linux54-acpi_call-1.1.0-17  linux54-headers-5.4.14-2  linux54-ndiswrapper-1.62-17  linux54-nvidia-440xx-440.44-14
              linux54-nvidiabl-0.88-17  linux54-virtualbox-host-modules-6.1.2-3  lv2-1.16.0-3  manjaro-browser-settings-20200124-1  mkinitcpio-27-2.1
              nss-3.49.2-1  nvidia-440xx-utils-440.44-4  octopi-0.9.0-22  octopi-notifier-frameworks-0.9.0-22  p11-kit-0.23.19-1  perl-ffi-checklib-0.26-1
              python-mako-1.1.1-1  python-zipp-1.0.0-1  qt5-wayland-5.14.0-3  serd-0.30.2-1  sord-0.16.4-1  sratom-0.6.4-1  systemd-242.153-3
              systemd-libs-242.153-3  systemd-sysvcompat-242.153-3  telegram-desktop-1.9.8-1  thunderbird-68.4.2-0.1  thunderbird-i18n-en-us-68.4.2-0.1
              thunderbird-i18n-sl-68.4.2-0.1  udiskie-2.0.4-1  util-linux-2.35-1  wpa_supplicant-2:2.9-4

Total Download Size:    426.32 MiB
Total Installed Size:  1259.01 MiB
Net Upgrade Size:        10.44 MiB

:: Proceed with installation? [Y/n]


2) Reboot
3) After logging into the system again, the taskbar might have disappeared

I am not sure if it's the update of something from KDE itself that causes the issue. My taskbar is not even customized anymore; I just use the default settings, since I keep having to reset them anyway.

After I delete the config file mentioned above, I run:

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kquitapp5 plasmashell && kstart5 plasmashell &

to get the taskbar back.

I am not sure what I might look for in `journalctl` or other logs in order to figure out why the taskbar does not appear. It is probably a bit too time-consuming for me to install updates one-by-one to figure out exactly which one is causing the issue. I'm also not sure if it's related to mkpcinitio (which would explain why it seems to happens after kernel updates).

Any tips for further debugging welcome. I was about to post this issue myself.

How about filing a bug report? https://bugs.kde.org is the place I suggest continuing this discussion. And please specify the exact Plasma version, the distribution numbering is not really helping, that would need us to remember in which number of distribution xy a specific Plasma version is in use...

Will do so. I didn't really have concrete information, so I didn't want to waste the developers' time, but if you are suggesting I file a report anyway, that's good enough for me

FWIW, the bug report I filed: https://bugs.kde.org/show_bug.cgi?id=416739

wizonesolutions wrote:I am encountering the same issue. I use Manjaro Linux 18.1.5.

I can work around it by deleting

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~/.config/plasma-org.kde.plasma.desktop-appletrc

, but it will come back after updates. I have not been able to isolate the problem more narrowly than these steps:
...

Thanks, my default panel comes back after removing

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~/.config/plasma-org.kde.plasma.desktop-appletrc

On Arch, I had the same issue after I installed xf86-video-intel package. Remove the package and reboot seem to fix the issue.

vgbdev wrote:On Arch, I had the same issue after I installed xf86-video-intel package. Remove the package and reboot seem to fix the issue.

Please add this information to the bug https://bugs.kde.org/show_bug.cgi?id=416739 (if you haven't done so already).

Same issue after update on arch linux system. plasma-desktop 5.20.4-2
Removing ~/.config/plasmashellrc did the workaround

For me just running this code restored the panel without having to delete ~/.config/plasma-org.kde.plasma.desktop-appletrc

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kquitapp5 plasmashell && kstart5 plasmashell &

However

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cat ~/.config/plasma-org.kde.plasma.desktop-appletrc

results in a

No such file or directory

So I guess I never had that file anyway.

(Debian 12 Release Candidate)

What about:

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cat ~/.config/plasma-org.kde.plasma.desktop-appletsrc