Battery life consumption skyrockets after upgrading to Plasma 6.7

Ask Fedora
1

Hello all,

I am on Fedora 44 KDE, running Plasma 6.7, KDE Frameworks 6.27.0, Qt 6.11.1, kernel 7.0.12-201, using Wayland. I have an Intel Core Ultra 7 265H and an NVIDIA GeForce RTX 5070 GPU on a Lenovo Thinkpad, and have the latest Mesa and NVIDIA drivers.

Before, under Plasma 6.6.5, my idle power usage was about 3-4 W, and browsing on a regular website (not social media or YouTube) with Vivaldi was about 6-7 W. I upgraded to Plasma 6.7, and now my idle power usage is 12-14 W, and writing this post was 14-16 W.

When I check System Monitor, Plasma Background Services uses about 2-5% of my CPU, with nearly all of that from kwin_wayland. (When I downgrade to Plasma 6.6.4 and check, with System Monitor and this browser open, the CPU usage is far smaller from kwin_wayland, around 0.1-0.3%.)

When I use sudo dnf downgrade plasma-desktop, my desktop is downgraded to 6.6.4 and my KDE apps to 25.12.3, and my battery life returns to normal. When I upgrade again, using the Terminal or Discover, the high battery consumption returns.

Not sure if this is a Fedora or KDE bug, but it’s a frustrating one, and since Plasma 6.7 is so new, I haven’t found anyone else reporting that they have this problem.

Thanks if any of you can help. If there’s any way I can gather more helpful info, let me know.

2

Here with Plasma 6.7 Background services use 0.3%, about the same as with the previous versions. Brave uses 0.9% with 4 tabs open and me writing this, when I stop writing it goes down to 0.3%.
I have an AMD Ryzen 7 6800H.
I can’t say something changed when I updated yesterday to a new Kinoite with Plasma 6.7.

3

Hello, I did not notice any change after upgrading to Plasma 6.7. Fedora 44 KDE, KDE Frameworks 6.27.0, Qt 6.11.1 kernel 7.0.12-201, using Wayland.

AMD Ryzen AI 9 HX 370 w/ Radeon 890M, NVIDIA Corporation AD107M [GeForce RTX 4060 Max-Q / Mobile], nouveau driver

kwin_wayland, around 0.7 - 1 % CPU load when running Firefox.

Did you try change Power mode ?

4

All this was happening while on Power Saver mode, with 5% screen brightness, in both cases I tested (with Plasma 6.6.4 and Plasma 6.7). There’s no better power mode to change to when it comes to battery life.

I noticed you and JandeMus have AMD CPUs while mine is Intel, so I’m not sure if that makes a difference.

5

AMD here, 0.1% on average.

6

Hi, I’m facing a similar issue on my 2022 Legion Pro 5i with an i7-12700H and an RTX 3070 Mobile.

Looking at nvidia-smi showed a kwin_wayland process, which I guess means that Plasma for some reason is using the Nvidia dGPU.

I tried forcing it to use Intel iGPU using a custom Wayland session pointing to a wrapper script that set the KWIN_DRM_DEVICES environment variable:

export KWIN_DRM_DEVICES=/dev/dri/by-path/pci-0000:00:02.0-card

exec /usr/lib/plasma-dbus-run-session-if-needed /usr/bin/startplasma-wayland

This unfortunately resulted in the session just failing to launch and sending me back to the login screen.

inxi -Farzy output below:

System:
  Kernel: 7.0.12-201.fc44.x86_64 arch: x86_64 bits: 64 compiler: gcc v: 16.1.1
    clocksource: tsc avail: acpi_pm
    parameters: BOOT_IMAGE=(hd1,gpt3)/vmlinuz-7.0.12-201.fc44.x86_64
    root=UUID=301a0013-fcf1-4cf4-9b18-9fee9b3fe413 ro rootflags=subvol=root
    nouveau.modeset=0 splash hibernate=nocompress ibt=off intel_iommu=on
    resume=UUID=5e907449-4fce-4a7c-8d86-cd4e0f3b0b30 nvidia-drm.fbdev=0
    rd.driver.blacklist=nouveau,nova_core modprobe.blacklist=nouveau,nova_core
    quiet
  Desktop: KDE Plasma v: 6.6.5 tk: Qt v: N/A info: frameworks v: 6.26.0
    wm: kwin_wayland vt: 2 dm: SDDM Distro: Fedora Linux 44 (KDE Plasma Desktop
    Edition)
Machine:
  Type: Laptop System: LENOVO product: 82RF v: Legion 5 Pro 16IAH7H
    serial: <superuser required> Chassis: type: 10 v: Legion 5 Pro 16IAH7H
    serial: <superuser required>
  Mobo: LENOVO model: LNVNB161216 v: NO DPK serial: <superuser required>
    part-nu: LENOVO_MT_82RF_BU_idea_FM_Legion 5 Pro 16IAH7H
    uuid: <superuser required> Firmware: UEFI vendor: LENOVO v: J2CN37WW
    date: 02/28/2022
Battery:
  ID-1: BAT0 charge: 59 Wh (77%) condition: 76.6/80 Wh (95.8%) volts: 16.56
    min: 15.44 model: Sunwoda L21D4PC1 type: Li-poly serial: <filter> charging:
    status: not charging type: long_life avail: fast,long_life,standard
    cycles: 69
CPU:
  Info: model: 12th Gen Intel Core i7-12700H bits: 64 type: MST AMCP
    arch: Alder Lake gen: core 12 level: v3 note: check built: 2021+
    process: Intel 7 (10nm ESF) family: 6 model-id: 0x9A (154) stepping: 3
    microcode: 0x43B
  Topology: cpus: 1x dies: 1 clusters: 8 cores: 14 threads: 20 mt: 6 tpc: 2
    st: 8 smt: enabled cache: L1: 1.2 MiB desc: d-8x32 KiB, 6x48 KiB; i-6x32
    KiB, 8x64 KiB L2: 11.5 MiB desc: 6x1.2 MiB, 2x2 MiB L3: 24 MiB
    desc: 1x24 MiB
  Speed (MHz): avg: 949 min/max: 400/4600:4700:3500 scaling:
    driver: intel_pstate governor: powersave cores: 1: 949 2: 949 3: 949 4: 949
    5: 949 6: 949 7: 949 8: 949 9: 949 10: 949 11: 949 12: 949 13: 949 14: 949
    15: 949 16: 949 17: 949 18: 949 19: 949 20: 949 bogomips: 107520
  Flags-basic: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: ghostwrite status: Not affected
  Type: indirect_target_selection status: Not affected
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: old_microcode status: Not affected
  Type: reg_file_data_sampling mitigation: Clear Register File
  Type: retbleed status: Not affected
  Type: spec_rstack_overflow status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: Enhanced / Automatic IBRS; IBPB: conditional;
    PBRSB-eIBRS: SW sequence; BHI: BHI_DIS_S
  Type: srbds status: Not affected
  Type: tsa status: Not affected
  Type: tsx_async_abort status: Not affected
  Type: vmscape mitigation: IBPB before exit to userspace
Graphics:
  Device-1: Intel Alder Lake-P GT2 [Iris Xe Graphics] vendor: Lenovo
    driver: i915 v: kernel alternate: xe arch: Xe process: Intel 10nm
    built: 2021-22+ ports: active: eDP-1 empty: DP-1,DP-2 bus-ID: 00:02.0
    chip-ID: 8086:46a6 class-ID: 0300
  Device-2: NVIDIA GA104M [GeForce RTX 3070 Mobile / Max-Q] vendor: Lenovo
    driver: nvidia v: 610.43.02 alternate: nouveau,nvidia_drm
    non-free: 550-580.xx+ status: current (as of 2025-11; EOL~2026-12-xx)
    arch: Ampere code: GAxxx process: TSMC n7 (7nm) built: 2020-2023 pcie:
    gen: 4 speed: 16 GT/s lanes: 8 link-max: lanes: 16 ports: active: none
    empty: DP-3, DP-4, HDMI-A-1, eDP-2 bus-ID: 01:00.0 chip-ID: 10de:24dd
    class-ID: 0300
  Display: wayland server: X.org v: 1.21.1.23 with: Xwayland v: 24.1.12
    compositor: kwin_wayland driver: X: loaded: nvidia gpu: i915 display-ID: 0
  Monitor-1: eDP-1 model: California Institute of eDP-1-0x1612 built: 2021
    res: mode: 2560x1600 hz: 165 scale: 120% (1.2) to: 2133x1333 dpi: 188
    gamma: 1.2 size: 345x215mm (13.58x8.46") diag: 407mm (16") ratio: 16:10
    modes: 2560x1600
  API: EGL v: 1.5 hw: drv: intel iris drv: nvidia platforms: device: 0
    drv: nvidia device: 2 drv: iris device: 3 drv: swrast gbm: drv: nvidia
    surfaceless: drv: nvidia wayland: drv: iris x11: drv: iris
    inactive: device-1
  API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: intel mesa v: 26.0.8 glx-v: 1.4
    direct-render: yes renderer: Mesa Intel Iris Xe Graphics (ADL GT2)
    device-ID: 8086:46a6 memory: 30.33 GiB unified: yes display-ID: :0.0
  API: Vulkan v: 1.4.341 layers: 13 device: 0 type: integrated-gpu name: Intel
    Iris Xe Graphics (ADL GT2) driver: mesa intel v: 26.0.8
    device-ID: 8086:46a6 surfaces: N/A device: 1 type: discrete-gpu name: NVIDIA
    GeForce RTX 3070 Laptop GPU driver: nvidia v: 610.43.02
    device-ID: 10de:24dd surfaces: N/A device: 2 type: cpu name: llvmpipe
    (LLVM 22.1.5 256 bits) driver: mesa llvmpipe v: 26.0.8 (LLVM 22.1.5)
    device-ID: 10005:0000 surfaces: N/A
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor gpu: gputop, intel_gpu_top, lsgpu,
    nvidia-settings, nvidia-smi wl: wayland-info x11: xdriinfo, xdpyinfo,
    xprop, xrandr
Audio:
  Device-1: Intel Alder Lake PCH-P High Definition Audio vendor: Lenovo
    driver: snd_hda_intel v: kernel alternate: snd_soc_avs,snd_sof_pci_intel_tgl
    bus-ID: 00:1f.3 chip-ID: 8086:51c8 class-ID: 0403
  Device-2: NVIDIA GA104 High Definition Audio driver: snd_hda_intel
    v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 8 link-max: lanes: 16
    bus-ID: 01:00.1 chip-ID: 10de:228b class-ID: 0403
  Device-3: Harman JBL Quantum910 Wireless
    driver: hid-generic,snd-usb-audio,usbhid type: USB rev: 2.0 speed: 12 Mb/s
    lanes: 1 mode: 1.1 bus-ID: 3-8:13 chip-ID: 0ecb:2088 class-ID: 0300
    serial: <filter>
  API: ALSA v: k7.0.12-201.fc44.x86_64 status: kernel-api
    tools: alsactl,alsamixer,amixer
  Server-1: PipeWire v: 1.6.6 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Intel Alder Lake-P PCH CNVi WiFi driver: iwlwifi v: kernel
    bus-ID: 00:14.3 chip-ID: 8086:51f0 class-ID: 0280
  IF: wlp0s20f3 state: up mac: <filter>
  Device-2: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: Lenovo driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1
    port: 3000 bus-ID: 31:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp49s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
  IF-ID-1: tailscale0 state: unknown speed: -1 duplex: full mac: N/A
  Info: services: NetworkManager,wpa_supplicant
Bluetooth:
  Device-1: Intel AX211 Bluetooth driver: btusb v: 0.8 type: USB rev: 2.0
    speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 3-10:6 chip-ID: 8087:0033
    class-ID: e001
  Report: hciconfig ID: hci0 rfk-id: 2 state: down
    bt-service: enabled,running rfk-block: hardware: no software: yes
    address: <filter>
  Info: acl-mtu: 1021:4 sco-mtu: 96:6 link-policy: rswitch sniff
    link-mode: peripheral accept
Drives:
  Local Storage: total: 1.84 TiB used: 672.7 GiB (35.7%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:1 vendor: Samsung model: MZVL21T0HCLR-00BL2
    size: 953.87 GiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s
    lanes: 4 tech: SSD serial: <filter> fw-rev: CL1QGXA7 temp: 43.9 C
    scheme: GPT
  ID-2: /dev/nvme1n1 maj-min: 259:0 vendor: SanDisk model: SC930 PRO 1TB
    size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s
    lanes: 4 tech: SSD serial: <filter> fw-rev: SN12362 temp: 44.9 C
    scheme: GPT
Partition:
  ID-1: / raw-size: 880.73 GiB size: 880.73 GiB (100.00%)
    used: 671.79 GiB (76.3%) fs: btrfs dev: /dev/nvme1n1p5 maj-min: 259:5
  ID-2: /boot raw-size: 2 GiB size: 1.93 GiB (96.72%) used: 848.7 MiB (42.8%)
    fs: ext4 dev: /dev/nvme1n1p3 maj-min: 259:4
  ID-3: /boot/efi raw-size: 800 MiB size: 256 MiB (32.00%)
    used: 81.8 MiB (31.9%) fs: vfat dev: /dev/nvme1n1p1 maj-min: 259:2
  ID-4: /home raw-size: 880.73 GiB size: 880.73 GiB (100.00%)
    used: 671.79 GiB (76.3%) fs: btrfs dev: /dev/nvme1n1p5 maj-min: 259:5
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: no
  ID-1: swap-1 type: zram size: 8 GiB used: 68 KiB (0.0%) priority: 100
    comp: lzo-rle avail: lzo,lz4,lz4hc,zstd,deflate,842 dev: /dev/zram0
  ID-2: swap-2 type: partition size: 48 GiB used: 0 KiB (0.0%) priority: -1
    dev: /dev/nvme1n1p2 maj-min: 259:3
Sensors:
  System Temperatures: cpu: 48.8 C mobo: N/A
  Fan Speeds (rpm): N/A
Repos:
  Packages: 76 pm: dpkg pkgs: 2 pm: rpm pkgs: N/A note: see --rpm
    tools: dnf,yum pm: flatpak pkgs: 72
  No active dnf repos in: /etc/dnf/dnf.conf
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:bieszczaders:kernel-cachyos.repo
    1: copr:copr.fedorainfracloud.org:bieszczaders:kernel-cachyos ~ https://download.copr.fedorainfracloud.org/results/bieszczaders/kernel-cachyos/fedora-$releasever-$basearch/
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:group_freecad:nightly.repo
    1: copr:copr.fedorainfracloud.org:group_freecad:nightly ~ https://download.copr.fedorainfracloud.org/results/@freecad/nightly/fedora-$releasever-$basearch/
  No active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:group_kernel-vanilla:next.repo
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:kwizart:fedy.repo
    1: copr:copr.fedorainfracloud.org:kwizart:fedy ~ https://download.copr.fedorainfracloud.org/results/kwizart/fedy/fedora-$releasever-$basearch/
  No active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:kwizart:kernel-longterm-6.1.repo
  No active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:kwizart:kernel-longterm-6.12.repo
  No active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:kwizart:kernel-longterm-6.6.repo
  No active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:kwizart:nvidia-driver-rawhide.repo
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:lukenukem:asus-linux.repo
    1: copr:copr.fedorainfracloud.org:lukenukem:asus-linux ~ https://download.copr.fedorainfracloud.org/results/lukenukem/asus-linux/fedora-$releasever-$basearch/
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:mrduarte:LenovoLegionLinux.repo
    1: copr:copr.fedorainfracloud.org:mrduarte:LenovoLegionLinux ~ https://download.copr.fedorainfracloud.org/results/mrduarte/LenovoLegionLinux/fedora-$releasever-$basearch/
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:openfoam:openfoam.repo
    1: copr:copr.fedorainfracloud.org:openfoam:openfoam ~ https://download.copr.fedorainfracloud.org/results/openfoam/openfoam/fedora-42-x86_64/
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:phracek:PyCharm.repo
    1: copr:copr.fedorainfracloud.org:phracek:PyCharm ~ https://download.copr.fedorainfracloud.org/results/phracek/PyCharm/fedora-$releasever-$basearch/
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:polymc:polymc.repo
    1: copr:copr.fedorainfracloud.org:polymc:polymc ~ https://download.copr.fedorainfracloud.org/results/polymc/polymc/fedora-$releasever-$basearch/
  No active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:rmnscnce:kernel-lqx.repo
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:schumischumi:floorp.repo
    1: copr:copr.fedorainfracloud.org:schumischumi:floorp ~ https://download.copr.fedorainfracloud.org/results/schumischumi/floorp/fedora-$releasever-$basearch/
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:sunwire:envycontrol.repo
    1: copr:copr.fedorainfracloud.org:sunwire:envycontrol ~ https://download.copr.fedorainfracloud.org/results/sunwire/envycontrol/fedora-$releasever-$basearch/
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:zhangyaoan:umu-launcher.repo
    1: copr:copr.fedorainfracloud.org:zhangyaoan:umu-launcher ~ https://download.copr.fedorainfracloud.org/results/zhangyaoan/umu-launcher/fedora-$releasever-$basearch/
  Active yum repos in: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:zinix01:linux-wifi-hotspot.repo
    1: copr:copr.fedorainfracloud.org:zinix01:linux-wifi-hotspot ~ https://download.copr.fedorainfracloud.org/results/zinix01/linux-wifi-hotspot/fedora-$releasever-$basearch/
  Active yum repos in: /etc/yum.repos.d/adoptium-temurin-java-repository.repo
    1: adoptium-temurin-java-repository ~ https://packages.adoptium.net/artifactory/rpm/fedora/$releasever/$basearch
  Active yum repos in: /etc/yum.repos.d/fedora-cisco-openh264.repo
    1: fedora-cisco-openh264 ~ https://mirrors.fedoraproject.org/metalink?repo=fedora-cisco-openh264-$releasever&arch=$basearch
  No active yum repos in: /etc/yum.repos.d/fedora-rawhide.repo
  No active yum repos in: /etc/yum.repos.d/fedora-updates-testing.repo
  Active yum repos in: /etc/yum.repos.d/fedora-updates.repo
    1: updates ~ https://mirrors.fedoraproject.org/metalink?repo=updates-released-f$releasever&arch=$basearch
  Active yum repos in: /etc/yum.repos.d/fedora.repo
    1: fedora ~ https://mirrors.fedoraproject.org/metalink?repo=fedora-$releasever&arch=$basearch
  Active yum repos in: /etc/yum.repos.d/google-chrome.repo
    1: google-chrome ~ https://dl.google.com/linux/chrome/rpm/stable/x86_64
  Active yum repos in: /etc/yum.repos.d/hardware:razer.repo
    1: hardware_razer ~ https://download.opensuse.org/repositories/hardware:/razer/Fedora_$releasever/
  Active yum repos in: /etc/yum.repos.d/home:paul4us.repo
    1: home_paul4us ~ https://download.opensuse.org/repositories/home:/paul4us/Fedora_42/
  Active yum repos in: /etc/yum.repos.d/multimedia:proaudio.repo
    1: multimedia_proaudio ~ https://download.opensuse.org/repositories/multimedia:/proaudio/Fedora_42/
  Active yum repos in: /etc/yum.repos.d/ni-labview-2025-el9-community.repo
    1: ni-labview-2025-el9-community ~ https://download.ni.com/ni-linux-desktop/LabVIEW/2025/Q3/f2/community/rpm/ni-labview-2025/el9
  Active yum repos in: /etc/yum.repos.d/ni-software-2025.repo
    1: ni-software-2025 ~ https://download.ni.com/ni-linux-desktop/2025/Q3/rpm/ni/el9
  No active yum repos in: /etc/yum.repos.d/rawhide-kernel.repo
  No active yum repos in: /etc/yum.repos.d/rpmfusion-free-updates-testing.repo
  Active yum repos in: /etc/yum.repos.d/rpmfusion-free-updates.repo
    1: rpmfusion-free-updates ~ https://mirrors.rpmfusion.org/metalink?repo=free-fedora-updates-released-$releasever&arch=$basearch
  Active yum repos in: /etc/yum.repos.d/rpmfusion-free.repo
    1: rpmfusion-free ~ https://mirrors.rpmfusion.org/metalink?repo=free-fedora-$releasever&arch=$basearch
  Active yum repos in: /etc/yum.repos.d/rpmfusion-nonfree-nvidia-driver.repo
    1: rpmfusion-nonfree-nvidia-driver ~ https://mirrors.rpmfusion.org/metalink?repo=nonfree-fedora-nvidia-driver-$releasever&arch=$basearch
  Active yum repos in: /etc/yum.repos.d/rpmfusion-nonfree-rawhide.repo
    1: rpmfusion-nonfree-rawhide ~ https://mirrors.rpmfusion.org/metalink?repo=nonfree-fedora-rawhide&arch=$basearch
  Active yum repos in: /etc/yum.repos.d/rpmfusion-nonfree-steam.repo
    1: rpmfusion-nonfree-steam ~ https://mirrors.rpmfusion.org/metalink?repo=nonfree-fedora-steam-$releasever&arch=$basearch
  No active yum repos in: /etc/yum.repos.d/rpmfusion-nonfree-tainted.repo
  No active yum repos in: /etc/yum.repos.d/rpmfusion-nonfree-updates-testing.repo
  Active yum repos in: /etc/yum.repos.d/rpmfusion-nonfree-updates.repo
    1: rpmfusion-nonfree-updates ~ https://mirrors.rpmfusion.org/metalink?repo=nonfree-fedora-updates-released-$releasever&arch=$basearch
  Active yum repos in: /etc/yum.repos.d/rpmfusion-nonfree.repo
    1: rpmfusion-nonfree ~ https://mirrors.rpmfusion.org/metalink?repo=nonfree-fedora-$releasever&arch=$basearch
  Active yum repos in: /etc/yum.repos.d/softmaker.repo
    1: softmaker ~ https://shop.softmaker.com/repo/rpm
  Active yum repos in: /etc/yum.repos.d/tailscale.repo
    1: tailscale-stable ~ https://pkgs.tailscale.com/stable/fedora/$basearch
  Active yum repos in: /etc/yum.repos.d/vivaldi.repo
    1: vivaldi ~ https://repo.vivaldi.com/archive/rpm/x86_64
  Active yum repos in: /etc/yum.repos.d/vscode.repo
    1: code ~ https://packages.microsoft.com/yumrepos/vscode
Info:
  Memory: total: 32 GiB note: est. available: 31.06 GiB used: 7.74 GiB (24.9%)
  Processes: 468 Power: uptime: 20h 0m states: freeze,mem,disk suspend: deep
    avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 12.35 GiB services: org_kde_powerdevil,upowerd
    Init: systemd v: 259 default: graphical tool: systemctl
  Compilers: clang: 22.1.6 gcc: 16.1.1 Shell: Bash v: 5.3.9
    running-in: yakuake inxi: 3.3.40
7

I’m not sure whether CPU manufacturer matters. I’m using GDM.

8

Agreed, I believe the persistent kwin_wayland process running on the dGPU is what needs looking at, though unfortunately I don’t know where to start on that one.

9

Submitted a bug on KDE.org, I’ll update on the results: https://bugs.kde.org/show_bug.cgi?id=521833

10

I’m sorry I don’t know neither.

11

Found a couple other bugs at KDE.org that seem relevant: 521914 and 521937.

Something to note: 521914 has an AI-assist disclaimer, but also lists specific merge requests that cause the issue.

12

I suspect that it’s sddm causing issues and occupying my nvidia dGPU, due to the lack of any other processes (xwayland and so on) in nvidia-smi except kwin_wayland, so I tried to force the use of my intel iGPU by adding the line:

KWIN_DRM_DEVICES=/dev/dri/by-path/pci-0000\:00\:02.0-card

to the file /etc/sddm.conf.d/10-waylandgreeter.conf at the GreeterEnvironment line, so the file now looks like this:

[General]
DisplayServer=wayland
GreeterEnvironment=QT_WAYLAND_SHELL_INTEGRATION=layer-shell KWIN_DRM_DEVICES=/dev/dri/by-path/pci-0000\:00\:02.0-card

[Wayland]
CompositorCommand=kwin_wayland --drm --no-lockscreen --no-global-shortcuts --locale1 --inputmethod maliit-keyboard

Unfortunately, all this did was cause a core dump:

Jun 30 17:09:41 481J4Y systemd-coredump[1932]: Process 1830 (sddm-greeter-qt) of user 990 dumped core.
                                               
                                               Module libwayland-cursor.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                                               Module libwayland-client.so.0 from rpm wayland-1.24.0-3.fc44.x86_64
                                               Module libQt6WaylandClient.so.6 from rpm qt6-qtbase-6.11.1-1.fc44.x86_64
                                               Module libqwayland.so from rpm qt6-qtbase-6.11.1-1.fc44.x86_64
                                               Module libudev.so.1 from rpm systemd-259.7-1.fc44.x86_64
                                               Module libcbor.so.0.13 from rpm libcbor-0.13.0-2.fc44.x86_64
                                               Module libcrypt.so.2 from rpm libxcrypt-4.5.2-3.fc44.x86_64
                                               Module libblkid.so.1 from rpm util-linux-2.41.5-1.fc44.x86_64
                                               Module libfido2.so.1 from rpm libfido2-1.16.0-5.fc44.x86_64
                                               Module libsasl2.so.3 from rpm cyrus-sasl-2.1.28-35.fc44.x86_64
                                               Module libevent-2.1.so.7 from rpm libevent-2.1.12-17.fc44.x86_64
                                               Module libunistring.so.5 from rpm libunistring-1.1-11.fc44.x86_64
                                               Module libmount.so.1 from rpm util-linux-2.41.5-1.fc44.x86_64
                                               Module libgmodule-2.0.so.0 from rpm glib2-2.88.2-1.fc44.x86_64
                                               Module libssl.so.3 from rpm openssl-3.5.7-1.fc44.x86_64
                                               Module libpsl.so.5 from rpm libpsl-0.21.5-7.fc44.x86_64
                                               Module libssh.so.4 from rpm libssh-0.12.0-1.fc44.x86_64
                                               Module libidn2.so.0 from rpm libidn2-2.3.8-3.fc44.x86_64
                                               Module libnghttp2.so.14 from rpm nghttp2-1.68.0-4.fc44.x86_64
                                               Module libngtcp2.so.16 from rpm ngtcp2-1.22.1-1.fc44.x86_64
                                               Module libngtcp2_crypto_ossl.so.0 from rpm ngtcp2-1.22.1-1.fc44.x86_64
                                               Module libnghttp3.so.9 from rpm nghttp3-1.16.0-1.fc44.x86_64
                                               Module libffi.so.8 from rpm libffi-3.5.2-2.fc44.x86_64
                                               Module libduktape.so.207 from rpm duktape-2.7.0-11.fc44.x86_64
                                               Module libgio-2.0.so.0 from rpm glib2-2.88.2-1.fc44.x86_64
                                               Module libcurl.so.4 from rpm curl-8.18.0-6.fc44.x86_64
                                               Module libselinux.so.1 from rpm libselinux-3.10-1.fc44.x86_64
                                               Module liblzma.so.5 from rpm xz-5.8.2-2.fc44.x86_64
                                               Module libicudata.so.77 from rpm icu-77.1-2.fc44.x86_64
                                               Module libgobject-2.0.so.0 from rpm glib2-2.88.2-1.fc44.x86_64
                                               Module libpxbackend-1.0.so from rpm libproxy-0.5.12-2.fc44.x86_64
                                               Module libbrotlicommon.so.1 from rpm brotli-1.2.0-3.fc44.x86_64
                                               Module libkeyutils.so.1 from rpm keyutils-1.6.3-7.fc44.x86_64
                                               Module libkrb5support.so.0 from rpm krb5-1.22.2-4.fc44.x86_64
                                               Module libcom_err.so.2 from rpm e2fsprogs-1.47.3-4.fc44.x86_64
                                               Module libk5crypto.so.3 from rpm krb5-1.22.2-4.fc44.x86_64
                                               Module libkrb5.so.3 from rpm krb5-1.22.2-4.fc44.x86_64
                                               Module libbz2.so.1 from rpm bzip2-1.0.8-23.fc44.x86_64
                                               Module libgraphite2.so.3 from rpm graphite2-1.3.14-20.fc44.x86_64
                                               Module libXext.so.6 from rpm libXext-1.3.6-5.fc44.x86_64
                                               Module libdbus-1.so.3 from rpm dbus-1.16.2-1.fc44.x86_64
                                               Module libpcre2-8.so.0 from rpm pcre2-10.47-1.fc44.1.x86_64
                                               Module libxml2.so.2 from rpm libxml2-2.12.10-6.fc44.x86_64
                                               Module libGLdispatch.so.0 from rpm libglvnd-1.7.0-9.fc44.x86_64
                                               Module libQt6QmlWorkerScript.so.6 from rpm qt6-qtdeclarative-6.11.1-2.fc44.x86_64
                                               Module libpcre2-16.so.0 from rpm pcre2-10.47-1.fc44.1.x86_64
                                               Module libb2.so.1 from rpm libb2-0.98.1-15.fc44.x86_64
                                               Module libdouble-conversion.so.3 from rpm double-conversion-3.4.0-3.fc44.x86_64
                                               Module libicuuc.so.77 from rpm icu-77.1-2.fc44.x86_64
                                               Module libicui18n.so.77 from rpm icu-77.1-2.fc44.x86_64
                                               Module libcrypto.so.3 from rpm openssl-3.5.7-1.fc44.x86_64
                                               Module libproxy.so.1 from rpm libproxy-0.5.12-2.fc44.x86_64
                                               Module libzstd.so.1 from rpm zstd-1.5.7-5.fc44.x86_64
                                               Module libbrotlidec.so.1 from rpm brotli-1.2.0-3.fc44.x86_64
                                               Module libgssapi_krb5.so.2 from rpm krb5-1.22.2-4.fc44.x86_64
                                               Module libz.so.1 from rpm zlib-ng-2.3.3-3.fc44.x86_64
                                               Module libfreetype.so.6 from rpm freetype-2.14.3-1.fc44.x86_64
                                               Module libharfbuzz.so.0 from rpm harfbuzz-14.1.0-2.fc44.x86_64
                                               Module libpng16.so.16 from rpm libpng-1.6.58-1.fc44.x86_64
                                               Module libOpenGL.so.0 from rpm libglvnd-1.7.0-9.fc44.x86_64
                                               Module libGLX.so.0 from rpm libglvnd-1.7.0-9.fc44.x86_64
                                               Module libxkbcommon.so.0 from rpm libxkbcommon-1.13.1-2.fc44.x86_64
                                               Module libQt6DBus.so.6 from rpm qt6-qtbase-6.11.1-1.fc44.x86_64
                                               Module libglib-2.0.so.0 from rpm glib2-2.88.2-1.fc44.x86_64
                                               Module libX11.so.6 from rpm libX11-1.8.13-1.fc44.x86_64
                                               Module libfontconfig.so.1 from rpm fontconfig-2.17.0-4.fc44.x86_64
                                               Module libEGL.so.1 from rpm libglvnd-1.7.0-9.fc44.x86_64
                                               Module libXau.so.6 from rpm libXau-1.0.12-4.fc44.x86_64
                                               Module libQt6OpenGL.so.6 from rpm qt6-qtbase-6.11.1-1.fc44.x86_64
                                               Module libQt6QmlModels.so.6 from rpm qt6-qtdeclarative-6.11.1-2.fc44.x86_64
                                               Module libQt6QmlMeta.so.6 from rpm qt6-qtdeclarative-6.11.1-2.fc44.x86_64
                                               Module libQt6Core.so.6 from rpm qt6-qtbase-6.11.1-1.fc44.x86_64
                                               Module libQt6Network.so.6 from rpm qt6-qtbase-6.11.1-1.fc44.x86_64
                                               Module libQt6Qml.so.6 from rpm qt6-qtdeclarative-6.11.1-2.fc44.x86_64
                                               Module libQt6Gui.so.6 from rpm qt6-qtbase-6.11.1-1.fc44.x86_64
                                               Module libsystemd.so.0 from rpm systemd-259.7-1.fc44.x86_64
                                               Module libxcb-xkb.so.1 from rpm libxcb-1.17.0-7.fc44.x86_64
                                               Module libxcb.so.1 from rpm libxcb-1.17.0-7.fc44.x86_64
                                               Module libQt6Quick.so.6 from rpm qt6-qtdeclarative-6.11.1-2.fc44.x86_64
                                               Module sddm-greeter-qt6 from rpm sddm-0.21.0-13.fc44.x86_64
                                               Stack trace of thread 1830:
                                               #0  0x00007fdd4787bdcc __pthread_kill_implementation (libc.so.6 + 0x74dcc)
                                               #1  0x00007fdd47820f8e raise (libc.so.6 + 0x19f8e)
                                               #2  0x00007fdd478087b3 abort (libc.so.6 + 0x17b3)
                                               #3  0x00007fdd47e1b86e _Z6qAbortv (libQt6Core.so.6 + 0x1b86e)
                                               #4  0x00007fdd47e786b1 _ZL10qt_message9QtMsgTypeRK18QMessageLogContextPKcP13__va_list_tag (libQt6Core.so.6 + 0x786b1)
                                               #5  0x00007fdd47e1d09f _ZNK14QMessageLogger5fatalEPKcz (libQt6Core.so.6 + 0x1d09f)
                                               #6  0x00007fdd4922e8e5 _ZL13init_platformRK7QStringS1_S1_RiPPc.cold (libQt6Gui.so.6 + 0x2e8e5)
                                               #7  0x00007fdd492f888d _ZN22QGuiApplicationPrivate25createPlatformIntegrationEv (libQt6Gui.so.6 + 0xf888d)
                                               #8  0x00007fdd492f94b8 _ZN22QGuiApplicationPrivate21createEventDispatcherEv (libQt6Gui.so.6 + 0xf94b8)
                                               #9  0x00007fdd47f1702d _ZN23QCoreApplicationPrivate4initEv (libQt6Core.so.6 + 0x11702d)
                                               #10 0x00007fdd492fd626 _ZN22QGuiApplicationPrivate4initEv (libQt6Gui.so.6 + 0xfd626)
                                               #11 0x00007fdd492ff499 _ZN15QGuiApplicationC1ERiPPci (libQt6Gui.so.6 + 0xff499)
                                               #12 0x000055eeec94f4da main (sddm-greeter-qt6 + 0xd4da)
                                               #13 0x00007fdd4780a681 __libc_start_call_main (libc.so.6 + 0x3681)
                                               #14 0x00007fdd4780a798 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3798)
                                               #15 0x000055eeec9501d5 _start (sddm-greeter-qt6 + 0xe1d5)
                                               ELF object binary architecture: AMD x86-64
Jun 30 17:09:41 481J4Y sddm-helper-start-wayland[1734]: Stopping... "kwin_wayland"
Jun 30 17:09:41 481J4Y audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@0-1-1930_45146-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jun 30 17:09:41 481J4Y systemd[1]: systemd-coredump@0-1-1930_45146-0.service: Deactivated successfully.

Can someone help? I’ll be stuck on a pre-6.7 snapshot until this is resolved.

EDIT: I did what OP did and downgraded to 6.6.4 after a full system upgrade, and the dGPU is able to power off again, no kwin_wayland process in sight.

13

Anything suspicious in powertop?

Steve

14

Went back to a 6.7 snapshot to check, but no, nothing strange there.

15

Found a discussion on KDE forums, and this seems to be a known bug for 6.7 with the GpuManager component, complete with a bug report.

A temporary workaround is to disable vulkan by setting the environment variable KWIN_DISABLE_VULKAN=1.

Exact instructions are in the linked KDE discussion thread.