Panel missing & unresponsive Super key after update

Support KDE Plasma
,
1

After installing the latest update, I can’t see my panel anymore (all I can see is my wallpaper) and the super and fn keys are non functional. I can use alt + space to launch apps, but this is making my computer really hard to use. This is on KDE on all of my installed kernels (5.8, 5.7 and 5.4)

Can somebody help me out? I’ve already tried with pamac install plasma, and running killall plasmashell, removing the calendar plasmoid and clearing the KDE cache, but all to no avail

Cita System: Kernel: 5.7.19-2-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 Desktop: KDE Plasma 5.19.5
Distro: Manjaro Linux
Machine: Type: Laptop System: LENOVO product: 81FB v: 330S-15ARR serial:
Mobo: LENOVO model: LNVNB161216 v: 31900002 WIN serial: UEFI: LENOVO v: 7WCN37WW
date: 05/22/2019
Battery: ID-1: BAT1 charge: 25.9 Wh condition: 26.7/30.0 Wh (89%) model: LENOVO BASE-BAT
status: Unknown
CPU: Topology: Dual Core model: AMD Ryzen 3 2200U with Radeon Vega Mobile Gfx bits: 64
type: MT MCP arch: Zen L2 cache: 1024 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 19969
Speed: 2070 MHz min/max: 1600/2500 MHz Core speeds (MHz): 1: 1556 2: 1603 3: 1576 4: 1591
Graphics: Device-1: AMD Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] vendor: Lenovo
driver: amdgpu v: kernel bus ID: 03:00.0
Device-2: Syntek Integrated Camera type: USB driver: uvcvideo bus ID: 3-1:2
Display: x11 server: X.Org 1.20.9 driver: amdgpu FAILED: ati unloaded: modesetting
resolution: 1366x768~60Hz
OpenGL: renderer: AMD RAVEN (DRM 3.37.0 5.7.19-2-MANJARO LLVM 10.0.1) v: 4.6 Mesa 20.1.8
direct render: Yes
Audio: Device-1: AMD Raven/Raven2/Fenghuang HDMI/DP Audio vendor: Lenovo driver: snd_hda_intel
v: kernel bus ID: 03:00.1
Device-2: AMD Raven/Raven2/FireFlight/Renoir Audio Processor driver: N/A bus ID: 03:00.5
Device-3: AMD Family 17h HD Audio vendor: Lenovo driver: snd_hda_intel v: kernel
bus ID: 03:00.6
Sound Server: ALSA v: k5.7.19-2-MANJARO
Network: Device-1: Realtek RTL8821CE 802.11ac PCIe Wireless Network Adapter vendor: Lenovo
driver: rtl8821ce v: N/A port: 2000 bus ID: 01:00.0
IF: wlp1s0 state: up mac:
Drives: Local Storage: total: 1.82 TiB used: 233.67 GiB (12.5%)
ID-1: /dev/sda vendor: Seagate model: ST2000LM007-1R8174 size: 1.82 TiB
Partition: ID-1: / size: 191.25 GiB used: 15.26 GiB (8.0%) fs: ext4 dev: /dev/sda7
ID-2: /home size: 1.31 TiB used: 218.41 GiB (16.3%) fs: ext4 dev: /dev/sda8
Swap: ID-1: swap-1 type: partition size: 8.01 GiB used: 0 KiB (0.0%) dev: /dev/sda6
Sensors: System Temperatures: cpu: 50.5 C mobo: N/A gpu: amdgpu temp: 50 C
Fan Speeds (RPM): N/A
Info: Processes: 218 Uptime: 16m Memory: 6.76 GiB used: 2.31 GiB (34.2%) Init: systemd Compilers:
gcc: 10.2.0 Packages: 1308 Shell: Bash v: 5.0.18 inxi: 3.1.05

2

First lets be sure you got all the updates:

sudo pacman-mirrors -f && sudo pacman -Syyu
3

Thank your for your reply, just ran the command and my system is up to date, no new updates are available

4

Mk.
Maybe we can get an idea from something like

journalctl -x -p3 -b1
5

This may be relevant:

6

Sorry for the delay, power was out for most of the day. This is the output for the command:

Cita – Logs begin at Mon 2020-09-21 05:54:45 EST, end at Wed 2020-10-07 22:16:14 EST. –
sep 21 05:54:45 L-330s-R kernel: __common_interrupt: 1.55 No irq handler for vector
sep 21 05:54:45 L-330s-R kernel: __common_interrupt: 2.55 No irq handler for vector
sep 21 05:54:45 L-330s-R kernel: __common_interrupt: 3.55 No irq handler for vector
sep 21 05:54:45 L-330s-R kernel: pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter.
sep 21 05:54:48 L-330s-R kernel: tpm_crb MSFT0101:00: can’t request region for resource [mem 0x7e4fd000-0x7>
sep 21 05:54:48 L-330s-R kernel: sp5100-tco sp5100-tco: Watchdog hardware is disabled
sep 21 05:54:48 L-330s-R kernel: snd_pci_acp3x 0000:03:00.5: Invalid ACP audio mode : 1
sep 21 05:54:52 L-330s-R systemd-backlight[429]: Failed to get backlight or LED device 'backlight:acpi_vide>
sep 21 05:54:52 L-330s-R systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:acp>
░░ Subject: A start job for unit systemd-backlight@backlight:acpi_video0.service has failed
░░ Defined-By: systemd
░░ Support: https://forum.manjaro.org/c/support
░░
░░ A start job for unit systemd-backlight@backlight:acpi_video0.service has finished with a failure.
░░
░░ The job identifier is 336 and the job result is failed.
sep 21 05:56:10 L-330s-R kernel: acp_rn_pdm_dma acp_rn_pdm_dma.0: ASoC: error at snd_soc_pcm_dai_trigger on>
sep 21 11:35:01 L-330s-R dolphin[8097]: inotify_add_watch(/boot/efi) failed: (Permission denied)
sep 21 12:29:13 L-330s-R bluetoothd[739]: RFCOMM server failed for Headset Voice gateway: rfcomm_bind: Addr>
sep 21 12:29:13 L-330s-R bluetoothd[739]: RFCOMM server failed for :1.1470/Profile/HSPHS/00001108-0000-1000>
sep 21 12:48:24 L-330s-R kernel: acp_rn_pdm_dma acp_rn_pdm_dma.0: ASoC: error at snd_soc_pcm_dai_trigger on>
sep 21 12:48:24 L-330s-R kglobalaccel5[26930]: This application failed to start because no Qt platform plug>

                                           Available platform plugins are: wayland-org.kde.kwin.qpa, eg>

sep 21 12:48:24 L-330s-R systemd-coredump[26796]: Failed to send coredump datagram: Connection reset by peer
lines 1-26…skipping…
– Logs begin at Mon 2020-09-21 05:54:45 EST, end at Wed 2020-10-07 22:16:14 EST. –
sep 21 05:54:45 L-330s-R kernel: __common_interrupt: 1.55 No irq handler for vector
sep 21 05:54:45 L-330s-R kernel: __common_interrupt: 2.55 No irq handler for vector
sep 21 05:54:45 L-330s-R kernel: __common_interrupt: 3.55 No irq handler for vector
sep 21 05:54:45 L-330s-R kernel: pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter.
sep 21 05:54:48 L-330s-R kernel: tpm_crb MSFT0101:00: can’t request region for resource [mem 0x7e4fd000-0x7e500fff]
sep 21 05:54:48 L-330s-R kernel: sp5100-tco sp5100-tco: Watchdog hardware is disabled
sep 21 05:54:48 L-330s-R kernel: snd_pci_acp3x 0000:03:00.5: Invalid ACP audio mode : 1
sep 21 05:54:52 L-330s-R systemd-backlight[429]: Failed to get backlight or LED device ‘backlight:acpi_video0’: No such device
sep 21 05:54:52 L-330s-R systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video0.
░░ Subject: A start job for unit systemd-backlight@backlight:acpi_video0.service has failed
░░ Defined-By: systemd
░░ Support: https://forum.manjaro.org/c/support
░░
░░ A start job for unit systemd-backlight@backlight:acpi_video0.service has finished with a failure.
░░
░░ The job identifier is 336 and the job result is failed.
sep 21 05:56:10 L-330s-R kernel: acp_rn_pdm_dma acp_rn_pdm_dma.0: ASoC: error at snd_soc_pcm_dai_trigger on acp_rn_pdm_dma.0: -110
sep 21 11:35:01 L-330s-R dolphin[8097]: inotify_add_watch(/boot/efi) failed: (Permission denied)
sep 21 12:29:13 L-330s-R bluetoothd[739]: RFCOMM server failed for Headset Voice gateway: rfcomm_bind: Address already in use (98)
sep 21 12:29:13 L-330s-R bluetoothd[739]: RFCOMM server failed for :1.1470/Profile/HSPHS/00001108-0000-1000-8000-00805F9B34FB: rfcomm_bind: Address>
sep 21 12:48:24 L-330s-R kernel: acp_rn_pdm_dma acp_rn_pdm_dma.0: ASoC: error at snd_soc_pcm_dai_trigger on acp_rn_pdm_dma.0: -110
sep 21 12:48:24 L-330s-R kglobalaccel5[26930]: This application failed to start because no Qt platform plugin could be initialized. Reinstalling th>

                                           Available platform plugins are: wayland-org.kde.kwin.qpa, eglfs, linuxfb, minimal, minimalegl, offsc>

sep 21 12:48:24 L-330s-R systemd-coredump[26796]: Failed to send coredump datagram: Connection reset by peer

7

Hello, thank you for your reply:

I don’t use that widget, still I used the command you provided to delete it, but unfortunately it didn’t work

8

Occasionally same symptoms here, but not only after updates.
This works for me:
https://wiki.archlinux.org/index.php/KDE#Clean_cache_to_resolve_upgrade_problems

9

Thank you for your reply. I just tried it and it didn’t work

10

Well, I solved it by switching to the XFCE version. Hopefully a future update will solve the issue and I can switch back

11

I’ve had this happen on a few occasions. the answer for me was simply to add a new panel, replacing the one which went AWOL.

12