Gnome Power saving display backlight stay On, 144 Hz intermitent black screens

Ask Fedora
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1

Hello, I have two problems with the monitor on the Fedora Workstation.

First, when my monitor goes into power saving after the delay set in gnome power savings, the display is black, but the backlight stays on.

I don’t have this problem with KDE, although I have some others.

Secondly, if I set the refresh rate to 144 Hz, the display goes black for about 2 seconds, then fine, then black for 2 seconds, and on and on.

On 120, 119, 120.1??? I don’t know why I have so many options for refresh rate, it works fine.

I use Windows in dual boot; no problem with 144 Hz.

Have you any advice?

2

Provide us with the output of inxi -Fzxx so we can see the hardware installed.
Do you know what GPU (or GPUs) may be installed?
We can see that with the inxi output as well.

3

Thank you for your time.

System:
  Kernel: 6.8.10-300.fc40.x86_64 arch: x86_64 bits: 64 compiler: gcc
    v: 2.41-37.fc40
  Desktop: KDE Plasma v: 6.0.5 tk: Qt v: N/A wm: kwin_wayland dm: SDDM
    Distro: Fedora Linux 40 (KDE Plasma)
Machine:
  Type: Desktop System: Gigabyte product: A520M S2H v: -CF
    serial: <superuser required>
  Mobo: Gigabyte model: A520M S2H v: x.x serial: <superuser required>
    UEFI: American Megatrends LLC. v: F18 date: 03/22/2024
CPU:
  Info: 6-core model: AMD Ryzen 5 5500 bits: 64 type: MT MCP arch: Zen 3
    rev: 0 cache: L1: 384 KiB L2: 3 MiB L3: 16 MiB
  Speed (MHz): avg: 832 high: 2994 min/max: 400/4267 cores: 1: 400 2: 400
    3: 400 4: 400 5: 400 6: 2994 7: 400 8: 2994 9: 400 10: 400 11: 400 12: 400
    bogomips: 86243
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Navi 23 [Radeon RX 6650 XT / 6700S 6800S] vendor: Sapphire
    driver: amdgpu v: kernel arch: RDNA-2 pcie: speed: 16 GT/s lanes: 16 ports:
    active: HDMI-A-1 empty: DP-1, DP-2, DP-3, Writeback-1 bus-ID: 03:00.0
    chip-ID: 1002:73ef
  Display: wayland server: Xwayland v: 23.2.6 compositor: kwin_wayland
    driver: N/A display-ID: 0
  Monitor-1: HDMI-A-1 res: 2560x1440 size: N/A
  API: EGL v: 1.5 platforms: device: 0 drv: radeonsi device: 1 drv: swrast
    surfaceless: drv: radeonsi wayland: drv: radeonsi x11: drv: radeonsi
    inactive: gbm
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 24.0.8 glx-v: 1.4
    direct-render: yes renderer: AMD Radeon RX 6650 XT (radeonsi navi23 LLVM
    18.1.1 DRM 3.57 6.8.10-300.fc40.x86_64) device-ID: 1002:73ef
    display-ID: :0.0
  API: Vulkan v: 1.3.280 surfaces: xcb,xlib,wayland device: 0
    type: discrete-gpu driver: N/A device-ID: 1002:73ef device: 1 type: cpu
    driver: N/A device-ID: 10005:0000
Audio:
  Device-1: AMD Navi 21/23 HDMI/DP Audio driver: snd_hda_intel v: kernel pcie:
    speed: 16 GT/s lanes: 16 bus-ID: 03:00.1 chip-ID: 1002:ab28
  Device-2: AMD Renoir Radeon High Definition Audio driver: snd_hda_intel
    v: kernel pcie: speed: 8 GT/s lanes: 16 bus-ID: 08:00.1 chip-ID: 1002:1637
  Device-3: AMD Family 17h/19h HD Audio vendor: Gigabyte
    driver: snd_hda_intel v: kernel pcie: speed: 8 GT/s lanes: 16
    bus-ID: 08:00.6 chip-ID: 1022:15e3
  API: ALSA v: k6.8.10-300.fc40.x86_64 status: kernel-api
  Server-1: PipeWire v: 1.0.7 status: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    4: pw-jack type: plugin
Network:
  Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: Gigabyte driver: r8169 v: kernel pcie: speed: 2.5 GT/s lanes: 1
    port: e000 bus-ID: 06:00.0 chip-ID: 10ec:8168
  IF: enp6s0 state: down mac: <filter>
  Device-2: TP-Link Archer T3U [Realtek RTL8812BU] driver: rtw_8822bu
    type: USB rev: 2.1 speed: 480 Mb/s lanes: 1 bus-ID: 5-1:2 chip-ID: 2357:012d
  IF: wlp8s0f4u1 state: up mac: <filter>
Drives:
  Local Storage: total: 938.93 GiB used: 15.41 GiB (1.6%)
  ID-1: /dev/nvme0n1 vendor: Western Digital model: WD Blue SN570 1TB
    size: 931.51 GiB speed: 31.6 Gb/s lanes: 4 serial: <filter> temp: 27.9 C
  ID-2: /dev/sda vendor: Kingston model: DataTraveler 160 size: 7.42 GiB
    type: USB rev: 2.0 spd: 480 Mb/s lanes: 1 serial: <filter>
Partition:
  ID-1: / size: 199 GiB used: 15.05 GiB (7.6%) fs: btrfs dev: /dev/nvme0n1p7
  ID-2: /boot size: 973.4 MiB used: 321.7 MiB (33.0%) fs: ext4
    dev: /dev/nvme0n1p6
  ID-3: /boot/efi size: 1020 MiB used: 46.6 MiB (4.6%) fs: vfat
    dev: /dev/nvme0n1p1
  ID-4: /home size: 199 GiB used: 15.05 GiB (7.6%) fs: btrfs
    dev: /dev/nvme0n1p7
Swap:
  ID-1: swap-1 type: zram size: 8 GiB used: 846 MiB (10.3%) priority: 100
    dev: /dev/zram0
Sensors:
  System Temperatures: cpu: 35.1 C mobo: 27.0 C gpu: amdgpu temp: 58.0 C
    mem: 58.0 C
  Fan Speeds (rpm): N/A gpu: amdgpu fan: 0
Info:
  Memory: total: 16 GiB available: 15.47 GiB used: 4.51 GiB (29.1%)
  Processes: 400 Power: uptime: 11h 19m wakeups: 0 Init: systemd v: 255
    target: graphical (5) default: graphical
  Packages: pm: flatpak pkgs: 23 Compilers: N/A Shell: Bash v: 5.2.26
    running-in: konsole inxi: 3.3.34

AMD 6650 xt for the gpu

4

More info : with 120 Hz, using an app in full screen mode will trigger the problem