KDE Plasma 6.7 Update Messed Up Display Configuration

Issues & Assistance
1

Hi,

I’ve been using a dual monitor setup for a year now without an issue. Main monitor and another monitor in portrait mode to its right. Both connected via DP on an all AMD system (details below)

But after today’s KDE Plasma 6.7 update (don’t know if it was the initial one or the 6.7.1 that came after it) if I go to display configuration icon on taskbar and click “use main monitor only”, it instead switches to my second monitor, makes it the primary monitor, resets display alignment so the secondary monitor moves to the left of my main monitor and it messes up everything.

Similarly, if I click “extend to the right”, it once again turns off main monitor and carries everything to the secondary monitor. Basically each setting is the wrong way around. “Use main screen” option works as “use external screen”; and on top of that “extend to the right” works as “extend to the left”.

My system is as follows:

Ryzen 5 5600 CPU

RX 7600 GPU

MSI MPG B550 Gaming Plus Motherboard

2x16gb 3200mhz ddr4 ram

nvme drive.

2

Yes, I have this too.
Display Configuration just shows:
“No KScreen backend found”?

DisplayConfigError
DisplayConfigError996×713 67.4 KB

❯ inxi -Farz
System:
Kernel:7.0.12-1-cachyosarch:x86_64bits:64compiler:clangv:22.1.6
clocksource:tscavail:hpet,acpi_pm
parameters:initrd=\initramfs-linux-cachyos.img
root=UUID=4a3d9d3c-4153-46ba-9cfb-b061ebbc24c0 rw
cryptdevice=UUID=c990f5ad-1e3c-4a74-aed4-331f38790b2b:luks-c990f5ad-1e3c-4a74-aed4-331f38790b2b
zswap.enabled=0 nowatchdog quiet splash
Desktop:KDE Plasmav:6.7.0tk:Qtv:N/Ainfo:frameworksv:6.27.0
wm:kwin_waylandwith:krunnervt:2dm:SDDMDistro:CachyOS
base:Arch Linux
Machine:
Type:Mini-pcMobo:AZWmodel:SER8v:V10serial:<superuser required>
part-nu:75uuid:<superuser required>Firmware:UEFIvendor:American
Megatrends LLC.v:HPT.8xxx.SER8.V035.P8C0M0C15.14.Linkdate:06/26/2025
CPU:
Info: model:AMD Ryzen 7 8845HS w/ Radeon 780M Graphicsbits:64
type:MT MCParch:Zen 4gen:4level:v4note:checkbuilt:2022+
process:TSMC n5 (5nm)family:0x19 (25)model-id:0x75 (117)stepping:2
microcode:0xA70520A
Topology: cpus:1xdies:1clusters:1cores:8threads:16tpc:2
smt:enabledcache: L1:512 KiBdesc:d-8x32 KiB; i-8x32 KiBL2:8 MiB
desc:8x1024 KiBL3:16 MiBdesc:1x16 MiB
Speed (MHz): avg:2773min/max:419/5138boost:enabledscaling:
driver:amd-pstate-eppgovernor:powersavecores: 1:27732:27733:2773
4:27735:27736:27737:27738:27739:277310:277311:277312:2773
13:277314:277315:277316:2773bogomips:121372
Flags-basic:avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a
ssse3 svm
Vulnerabilities:
Type:gather_data_samplingstatus:Not affected
Type:ghostwritestatus:Not affected
Type:indirect_target_selectionstatus:Not affected
Type:itlb_multihitstatus:Not affected
Type:l1tfstatus:Not affected
Type:mdsstatus:Not affected
Type:meltdownstatus:Not affected
Type:mmio_stale_datastatus:Not affected
Type:old_microcodestatus:Not affected
Type:reg_file_data_samplingstatus:Not affected
Type:retbleedstatus:Not affected
Type:spec_rstack_overflowmitigation:Safe RET
Type:spec_store_bypassmitigation:Speculative Store Bypass disabled via
prctl
Type:spectre_v1mitigation:usercopy/swapgs barriers and __user pointer
sanitization
Type:spectre_v2mitigation:Enhanced / Automatic IBRS; IBPB:
conditional; STIBP: always-on; PBRSB-eIBRS: Not affected; BHI: Not
affected
Type:srbdsstatus:Not affected
Type:tsamitigation:Clear CPU buffers
Type:tsx_async_abortstatus:Not affected
Type:vmscapemitigation:IBPB before exit to userspace
Graphics:
Device-1:Advanced Micro Devices [AMD/ATI] HawkPoint1driver:amdgpu
v:kernelarch:RDNA-3code:Phoenixprocess:TSMC n4 (4nm)built:2023+
pcie: gen:4speed:16 GT/slanes:16ports: active:DP-1,HDMI-A-1
empty:DP-2, DP-3, DP-4, DP-5, DP-6, Writeback-1bus-ID:65:00.0
chip-ID:1002:1900class-ID:0300temp:38.0 C
Display:waylandserver:``X.org``v:1.21.1.23with:Xwaylandv:24.1.12
compositor:kwin_waylanddriver: X: loaded:amdgpuunloaded:modesetting
alternate:fbdev,vesadri:radeonsigpu:amdgpud-rect:1920x1080
display-ID:0
Monitor-1:DP-1pos:primarymodel:LG (GoldStar) Ultra HD
serial:<filter>built:2023res: mode:1920x1080hz:60scale:100% (1)
dpi:163gamma:1.2size:600x340mm (23.62x13.39")diag:690mm (27.2")
ratio:16:9modes: max:3840x2160min:640x480
Monitor-2:HDMI-A-1pos:primarymodel:LG (GoldStar) TV SSCR2
serial:<filter>built:2020res: mode:1920x1080hz:60scale:100% (1)
dpi:61gamma:1.2size:1600x900mm (62.99x35.43")diag:1836mm (72.3")
ratio:16:9modes: max:3840x2160min:720x400
API:EGLv:1.5hw: drv:amd radeonsiplatforms: device:0drv:radeonsi
device:1drv:swrastgbm: drv:radeonsisurfaceless: drv:radeonsiwayland:
drv:radeonsix11: drv:radeonsi
API:OpenGLv:4.6vendor:amd mesav:26.1.2-arch2.1glx-v:1.4
direct-render:yesrenderer:AMD Radeon 780M Graphics (radeonsi phoenix ACO
DRM 3.64 7.0.12-1-cachyos)device-ID:1002:1900memory:7.81 GiB
unified:yesdisplay-ID::0.0
API:Vulkanv:1.4.350layers:6device:0type:integrated-gpuname:AMD
Radeon 780M Graphics (RADV PHOENIX)driver:mesa radvv:26.1.2-arch2.1
device-ID:1002:1900surfaces:N/A
Info: Tools: api:clinfo, eglinfo, glxinfo, vulkaninfo
de:kscreen-console,kscreen-doctorwl:wayland-info
x11:xdpyinfo, xprop, xrandr
Audio:
Device-1:Advanced Micro Devices [AMD/ATI] Radeon High Definition Audio
driver:snd_hda_intelv:kernelpcie: gen:4speed:16 GT/slanes:16
bus-ID:65:00.1chip-ID:1002:1640class-ID:0403
Device-2:Advanced Micro Devices [AMD] Audio Coprocessor
driver:snd_pci_psv:kernelalternate:snd_pci_acp3x, snd_rn_pci_acp3x,
snd_pci_acp5x, snd_pci_acp6x, snd_acp_pci, snd_rpl_pci_acp6x,
snd_sof_amd_renoir, snd_sof_amd_rembrandt, snd_sof_amd_vangogh,
snd_sof_amd_acp63, snd_sof_amd_acp70pcie: gen:4speed:16 GT/slanes:16
bus-ID:65:00.5chip-ID:1022:15e2class-ID:0480
Device-3:Advanced Micro Devices [AMD] Ryzen HD Audio
driver:snd_hda_intelv:kernelpcie: gen:4speed:16 GT/slanes:16
bus-ID:65:00.6chip-ID:1022:15e3class-ID:0403
API:ALSAv:k7.0.12-1-cachyosstatus:kernel-api
tools:alsactl,alsamixer,amixer
Server-1:sndiodv:N/Astatus:offtools:aucat,midicat,sndioctl
Server-2:JACKv:1.9.22status:offtools:N/A
Server-3:PipeWirev:1.6.6status:activewith: 1:pipewire-pulse
status:active2:wireplumberstatus:active3:pipewire-alsatype:plugin
tools:pactl,pw-cat,pw-cli,wpctl
Network:
Device-1:Realtek RTL8125 2.5GbEdriver:r8169v:kernelpcie: gen:2
speed:5 GT/slanes:1port:f000bus-ID:01:00.0chip-ID:10ec:8125
class-ID:0200
IF:enp1s0state:upspeed:1000 Mbpsduplex:fullmac:<filter>
Device-2:Intel Wi-Fi 6 AX200driver:iwlwifiv:kernelpcie: gen:2
speed:5 GT/slanes:1bus-ID:02:00.0chip-ID:8086:2723class-ID:0280
IF:wlan0state:downmac:<filter>
Info: services:NetworkManager,systemd-timesyncd
Bluetooth:
Device-1:Intel AX200 Bluetoothdriver:btusbv:0.8type:USBrev:2.0
speed:12 Mb/slanes:1mode:1.1bus-ID:1-5:5chip-ID:8087:0029
class-ID:e001
Report:btmgmtID:hci0rfk-id:0state:upaddress:<filter>bt-v:5.2
lmp-v:11status: discoverable:nopairing:noclass-ID:6c0104
Drives:
Local Storage: total:931.51 GiBused:474.53 GiB (50.9%)
SMART Message:Unable to run smartctl. Root privileges required.
ID-1:/dev/nvme0n1maj-min:259:0vendor:Crucialmodel:CT1000P3PSSD8
size:931.51 GiBblock-size: physical:512 Blogical:512 Bspeed:63.2 Gb/s
lanes:4tech:SSDserial:<filter>fw-rev:P9CR411temp:32.9 C
scheme:GPT
Partition:
ID-1:/raw-size:929.5 GiBsize:913.83 GiB (98.31%)
used:474.27 GiB (51.9%)fs:ext4dev:/dev/dm-0maj-min:253:0
mapped:luks-c990f5ad-1e3c-4a74-aed4-331f38790b2b
ID-2:/bootraw-size:2 GiBsize:2 GiB (99.80%)used:266.2 MiB (13.0%)
fs:vfatdev:/dev/nvme0n1p1maj-min:259:1
Swap:
Kernel: swappiness:180 (default 60)cache-pressure:50 (default 100)
zswap:no
ID-1:swap-1type:zramsize:23.21 GiBused:3.25 GiB (14.0%)
priority:100comp:zstdavail:lzo-rle,lzo,lz4,lz4hc,deflate,842
dev:/dev/zram0
Sensors:
System Temperatures: cpu:45.1 Cmobo:41.5 Cgpu:amdgputemp:38.0 C
Fan Speeds (rpm):N/A
Repos:
Packages:1553pm:pacmanpkgs:1534libs:406tools:octopi,parupm:rpm
pkgs:0pm:flatpakpkgs:19
Active pacman repo servers in:/etc/pacman.d/cachyos-mirrorlist
1: https://mirror.krfoss.org/cachyos/repo/$arch/$repo``
2: https://cdn77.cachyos.org/repo/$arch/$repo``
3: https://mirror5.krfoss.org/cachyos/repo/$arch/$repo``
4: https://us-mnz.soulharsh007.dev/cachyos/repo/$arch/$repo``
5: https://cachyos.doridian.net/repo/$arch/$repo``
6: https://us.cachyos.org/repo/$arch/$repo``
7: https://cdn.lansing2600.org/cachyos/repo/$arch/$repo``
8: https://at.cachyos.org/repo/$arch/$repo``
9: https://mirror.mergedcloud.de/cachyos/repo/$arch/$repo``
10: https://mirror.zyner.org/mirror/cachyos/repo/$arch/$repo``
11: https://ca.mirror.cx/cachyos/repo/$arch/$repo``
12: https://nl.mirror.cx/cachyos/repo/$arch/$repo``
13: https://mirror.hjk.gg/cachyos/repo/$arch/$repo``
14: https://mirrors.lansing2600.org/cachyos/repo/$arch/$repo``
15: https://cachyos.next-works.it/repo/$arch/$repo``
16: https://mirror.cachy-arch.ru/cachyos/repo/$arch/$repo``
17: https://wan.metrosg.ru/cachyos/repo/$arch/$repo``
18: https://no.mirror.cx/cachyos/repo/$arch/$repo``
19: https://mirror.lesviallon.fr/cachy/repo/$arch/$repo``
20: https://archlinux.gay/cachy/repo/$arch/$repo``
21: https://cachyos-mirror.m1k.cloud/repo/$arch/$repo``
22: https://mirror.nju.edu.cn/cachyos/repo/$arch/$repo``
23: https://mirror.keiminem.com/cachyos/repo/$arch/$repo``
24: https://mirror2.keiminem.com/cachyos/repo/$arch/$repo``
25: https://mirror.hb9hil.org/cachyos/repo/$arch/$repo``
26: https://mirrors.ustc.edu.cn/cachyos/repo/$arch/$repo``
27: https://mirror.jura12.ru/repo/$arch/$repo``
Active pacman repo servers in:/etc/pacman.d/cachyos-v4-mirrorlist
1: https://mirror.krfoss.org/cachyos/repo/$arch_v4/$repo``
2: https://cdn77.cachyos.org/repo/$arch_v4/$repo``
3: https://mirror5.krfoss.org/cachyos/repo/$arch_v4/$repo``
4: https://us-mnz.soulharsh007.dev/cachyos/repo/$arch_v4/$repo``
5: https://cachyos.doridian.net/repo/$arch_v4/$repo``
6: https://us.cachyos.org/repo/$arch_v4/$repo``
7: https://cdn.lansing2600.org/cachyos/repo/$arch_v4/$repo``
8: https://at.cachyos.org/repo/$arch_v4/$repo``
9: https://mirror.mergedcloud.de/cachyos/repo/$arch_v4/$repo``
10: https://mirror.zyner.org/mirror/cachyos/repo/$arch_v4/$repo``
11: https://ca.mirror.cx/cachyos/repo/$arch_v4/$repo``
12: https://nl.mirror.cx/cachyos/repo/$arch_v4/$repo``
13: https://mirror.hjk.gg/cachyos/repo/$arch_v4/$repo``
14: https://mirrors.lansing2600.org/cachyos/repo/$arch_v4/$repo``
15: https://cachyos.next-works.it/repo/$arch_v4/$repo``
16: https://mirror.cachy-arch.ru/cachyos/repo/$arch_v4/$repo``
17: https://wan.metrosg.ru/cachyos/repo/$arch_v4/$repo``
18: https://no.mirror.cx/cachyos/repo/$arch_v4/$repo``
19: https://mirror.lesviallon.fr/cachy/repo/$arch_v4/$repo``
20: https://archlinux.gay/cachy/repo/$arch_v4/$repo``
21: https://cachyos-mirror.m1k.cloud/repo/$arch_v4/$repo``
22: https://mirror.nju.edu.cn/cachyos/repo/$arch_v4/$repo``
23: https://mirror.keiminem.com/cachyos/repo/$arch_v4/$repo``
24: https://mirror2.keiminem.com/cachyos/repo/$arch_v4/$repo``
25: https://mirror.hb9hil.org/cachyos/repo/$arch_v4/$repo``
26: https://mirrors.ustc.edu.cn/cachyos/repo/$arch_v4/$repo``
27: https://mirror.jura12.ru/repo/$arch_v4/$repo``
Active pacman repo servers in:/etc/pacman.d/mirrorlist
1: https://archlinux.cachyos.org/repo/$repo/os/$arch``
2: https://arch.mirror.constant.com/$repo/os/$arch``
3: https://mirror.krfoss.org/archlinux/$repo/os/$arch``
4: https://mirror.osbeck.com/archlinux/$repo/os/$arch``
5: https://mirror.quantum5.ca/archlinux/$repo/os/$arch``
6: https://fastly.mirror.pkgbuild.com/$repo/os/$arch``
7: https://elda.asgardius.company/archlinux/$repo/os/$arch``
8: https://uk.repo.c48.uk/arch/$repo/os/$arch``
9: https://berlin.mirror.pkgbuild.com/$repo/os/$arch``
10: https://geo.mirror.pkgbuild.com/$repo/os/$arch``
11: https://nl.mirror.cx/archlinux/$repo/os/$arch``
12: https://archlinux.mailtunnel.eu/$repo/os/$arch``
13: https://fi.arch.niranjan.co/$repo/os/$arch``
14: https://arch.yhtez.xyz/$repo/os/$arch``
15: https://mirror.raiolanetworks.com/archlinux/$repo/os/$arch``
16: https://umea.mirror.pkgbuild.com/$repo/os/$arch``
17: https://london.mirror.pkgbuild.com/$repo/os/$arch``
18: https://mirror.scd31.com/arch/$repo/os/$arch``
19: https://ams.nl.mirrors.bjg.at/arch/$repo/os/$arch``
20: https://mirrors.aliyun.com/archlinux/$repo/os/$arch``
21: https://lidsol.fi-b.unam.mx/archlinux/$repo/os/$arch``
22: https://mirror.abderraziq.com/archlinux/$repo/os/$arch``
23: https://taipei.mirror.pkgbuild.com/$repo/os/$arch``
24: https://mirror.nw-sys.ru/archlinux/$repo/os/$arch``
25: https://mirror2.givebytes.net/archlinux/$repo/os/$arch``
26: https://mirror.xtom.com.hk/archlinux/$repo/os/$arch``
27: https://www.miraa.jp/archlinux/$repo/os/$arch``
28: https://mirror.twds.com.tw/archlinux/$repo/os/$arch``
29: https://mirrors.jlu.edu.cn/archlinux/$repo/os/$arch``
30: https://in.arch.niranjan.co/$repo/os/$arch``
31: https://ftpmirror.infania.net/mirror/archlinux/$repo/os/$arch``
32: https://sg.arch.niranjan.co/$repo/os/$arch``
33: https://singapore.mirror.pkgbuild.com/$repo/os/$arch``
34: https://mirror.lcarilla.de/archlinux/$repo/os/$arch``
Info:
Memory: total:24 GiBavailable:23.22 GiBused:15.95 GiB (68.7%)
Processes:528Power: uptime:1d 12h 52mstates:freeze,mem,disk
suspend:s2idlewakeups:0hibernate:platformavail:shutdown, reboot,
suspend, test_resumeimage:9.23 GiBservices:org_kde_powerdevil,
power-profiles-daemon, upowerdInit:systemdv:260default:graphical
tool:systemctl
Compilers: clang:22.1.6gcc:16.1.1Shell:fishv:4.7.1
running-in:konsoleinxi: 3.3.40

3

Reboot fixed it, thanks!

4

Used snapper restore to return to Plasma 6.7.0.1 update, but the issue is still there. So both 6.7.0.1 and today’s 6.7.0.1-1 seem to be affected.

Edit: Seemed to find a way to fix the problem. It seems for whatever reason, initial display configuration seemed to be borked. So what I did was:

1- Start with secondary monitor disabled

2- Restarted PC

3- Went to display config settings menu

4- Clicked “enable” on secondary monitor

at this state, my secondary monitor enabled but additionally “primary monitor” setting was also marked, without an option to unmark it. It was also mispositioned to the left of main monitor. Here’s where the confusion begins.

5- Before I clicked “apply”, I clicked “arrange monitors” and dragged secondary monitor to the right side, which corrected the position issue.

6- After that clicked “apply”. This set the secondary monitor as the primary monitor, but at least the position was correct.

7- Finally, marked the correct monitor as “primary” and for now the issue seems to be fixed.

If anyone encounters the same issue, I hope this helps. The issue seems to stem from the new Plasma version initializing existing monitor setups improperly and marking both (maybe all) monitors as “primary” when first initialized.

5

The same thing happens here. I had already noticed this in Plasma 6.6.5, but it became worse with 6.7.

The “Display Configuration” icon on the taskbar does not work. The solution presented did not work for me.

Switching between the two monitors only works through System Settings. Using the taskbar shortcut causes the display configuration break.

7

Hey there, I have only been daily driving linux for a week, and while I’m not entirely new to linux and unix, I am having a hard time with issues like this. The plasma 6.7.0 update on any of the patches that are available are breaking my second display. I have a similar config to OP but the fix did not work for me. What changes is that I have a Ryzen 7600 and an RX 7800xt with 32GB of ram. And that my second display is connected to the integrated graphics and not the GPU.

What I get on my end is that the secondary display on portrait mode just starts artifacting really bad. Half the screen is a black square, windows that show on the bottom half flicker and seem to break and leave a trail. Trying the fix only corrects the wallpaper and removes the black square on my end, but the window flickering and only showing on the bottom half the monitor is still there. It starts artifacting after a while again.

My current solution was to just downgrade to plasma 6.6.5 entirely (which is a relief I can just do that). I know my hardware is in perfect health since it only happens on plasma 6.7.0. I dont mind waiting for a working plasma update or skipping this one entirely.

Is there another fix to this situation? Thanks in advance!

8

The problem is back. The solution I gave above is no longer working. It seems something is borked with Kwin or Plasma in general since 6.7 update. Screen configuration is completely borked.

9

If you want to downgrade, this is the fish script I used to force it back to 6.6.5 (it didnt let me use the downgrade command itself).

for pkg in aurorae bluedevil breeze breeze-cursors breeze-gtk kactivitymanagerd kde-cli-tools kde-gtk-config kdecoration kdeplasma-addons kglobalacceld kinfocenter kmenuedit knighttime kpipewire kscreen kscreenlocker ksystemstats kwallet-pam wayland kwin layer-shell-qt libkscreen libksysguard libplasma milou ocean-sound-theme plasma-activities plasma-activities-stats plasma-browser-integration plasma-desktop plasma-firewall plasma-integration plasma-login-manager plasma-nm plasma-pa plasma-systemmonitor plasma-thunderbolt plasma-workspace plasma5support plymouth-kcm polkit-kde-agent powerdevil qqc2-breeze-style systemsettings xdg-desktop-portal-kde
sudo pacman -U /var/cache/pacman/pkg/$pkg-6.6.5*.pkg.tar.zst --overwrite "*" --noconfirm
end

It does install from cache rather than the internet, so it could not work if you never had 6.6.5, you can also change that to whatever version you had prior to the update

10

After today’s KDE Plasma update 6.7.1-1.1 (can’t keep track of it at this point) I tried my initial solution, which seems to work. But I don’t know if it will break again after a restart or two. Will keep it updated here if anything goes wrong again.

EDIT: After a restart, problem happens again. It’s not fixed so far.

11

My single display (normally 165Hz) became stuck at 59Hz after today’s update and I was hoping this would fix my issue but after running the command then restarting my computer, it completely stopped rendering my desktop after the boot loader concluded.

To fix it, I had to create bootable media on a USB, open Konsole and run “cachy-chroot”, selected my BTRFS partition from the list, then ran “pacman -Syu linux-cachyos linux-cachyos-headers”, then typed “exit”, and then “reboot”