SUMMARY STEPS TO REPRODUCE 1. Connect 2 External Displays to Laptop via DP Daisy Chain 2. Check settings to see that one is disabled 3. Enable on the settings page and press apply OBSERVED RESULT Screen doesn't turn on and seems to revert back to the original state where the screen is disabled. EXPECTED RESULT Second Screen turns on. --- *Note:* I've also tried to enable the screen via `kscreen-doctor output.DP-12.enable` with the following output: ``` kscreen-doctor output.DP-12.enable Enabling output 3 kscreen.doctor: setop exec returned KScreen::Config( KScreen::Output(1, "eDP-2", connected enabled priority 2, pos: QPoint(2560,263), res: QSize(2560, 1600), modeId: "0", scale: 1.75, clone: no, rotation: KScreen::Output::None, followPreferredMode: false) KScreen::Output(2, "DP-10", connected enabled priority 1, pos: QPoint(0,0), res: QSize(3840, 2160), modeId: "0", scale: 1.5, clone: no, rotation: KScreen::Output::None, followPreferredMode: false) KScreen::Output(3, "DP-12", connected enabled priority 3, pos: QPoint(6400,0), res: QSize(3840, 2160), modeId: "0", scale: 1.25, clone: no, rotation: KScreen::Output::None, followPreferredMode: false) ) ``` SOFTWARE/OS VERSIONS Windows: 11 Linux/KDE Plasma: 6.7.10-2-MANJARO KDE Plasma Version: 6.0.2 KDE Frameworks Version: 6.0.0 Qt Version: 6.6.2 ADDITIONAL INFORMATION Output of `kscreen-doctor -o` ``` Output: 1 eDP-2 enabled connected priority 2 Panel Modes: 0:2560x1600@120*! 1:2560x1600@96 2:2560x1600@72 3:2560x1600@60 4:2560x1600@60 5:2560x1600@50 6:2560x1600@48 7:1920x1200@120 8:1920x1080@120 9:1600x1200@120 10:1680x1050@120 11:1280x1024@120 12:1440x900@120 13:1280x800@120 14:1280x720@120 15:1024x768@120 16:800x600@120 17:640x480@120 18:1600x1200@60 19:1280x1024@60 20:1024x768@60 21:2560x1600@60 22:1920x1200@60 23:1280x800@60 24:2560x1440@60 25:1920x1080@60 26:1600x900@60 27:1368x768@60 28:1280x720@60 Geometry: 2560,263 1463x915 Scale: 1.75 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: unknown HDR: incapable Wide Color Gamut: incapable ICC profile: none Output: 2 DP-10 enabled connected priority 1 DisplayPort Modes: 0:3840x2160@60*! 1:3840x2160@60 2:3840x2160@60 3:3840x2160@50 4:3840x2160@30 5:3840x2160@30 6:3840x2160@30 7:3840x2160@25 8:3840x2160@24 9:3840x2160@24 10:2560x1440@60 11:1920x1080@60 12:1920x1080@60 13:1920x1080@60 14:1920x1080@50 15:1920x1080@30 16:1920x1080@30 17:1920x1080@25 18:1920x1080@24 19:1920x1080@24 20:1600x1200@60 21:1680x1050@60 22:1600x900@60 23:1280x1024@75 24:1280x1024@60 25:1280x800@60 26:1152x864@75 27:1280x720@60 28:1280x720@60 29:1280x720@60 30:1280x720@50 31:1024x768@75 32:1024x768@60 33:1440x480@60 34:1440x480@60 35:832x624@75 36:800x600@75 37:800x600@60 38:720x576@50 39:720x480@60 40:720x480@60 41:720x480@60 42:720x480@60 43:640x480@75 44:640x480@60 45:640x480@60 46:640x480@60 47:720x400@70 48:1600x1200@60 49:1280x1024@60 50:1024x768@60 51:2560x1600@60 52:1920x1200@60 53:3840x2160@60 54:3200x1800@60 55:2880x1620@60 56:2560x1440@60 57:1920x1080@60 58:1600x900@60 59:1368x768@60 60:1280x720@60 Geometry: 0,0 2560x1440 Scale: 1.5 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: unknown HDR: disabled Wide Color Gamut: incapable ICC profile: none Output: 3 DP-12 disabled connected priority 0 DisplayPort Modes: 0:3840x2160@60*! 1:3840x2160@60 2:3840x2160@60 3:3840x2160@50 4:3840x2160@30 5:3840x2160@30 6:3840x2160@30 7:3840x2160@25 8:3840x2160@24 9:3840x2160@24 10:2560x1440@60 11:1920x1080@60 12:1920x1080@60 13:1920x1080@60 14:1920x1080@50 15:1920x1080@30 16:1920x1080@30 17:1920x1080@25 18:1920x1080@24 19:1920x1080@24 20:1600x1200@60 21:1680x1050@60 22:1600x900@60 23:1280x1024@75 24:1280x1024@60 25:1280x800@60 26:1152x864@75 27:1280x720@60 28:1280x720@60 29:1280x720@60 30:1280x720@50 31:1024x768@75 32:1024x768@60 33:1440x480@60 34:1440x480@60 35:832x624@75 36:800x600@75 37:800x600@60 38:720x576@50 39:720x480@60 40:720x480@60 41:720x480@60 42:720x480@60 43:640x480@75 44:640x480@60 45:640x480@60 46:640x480@60 47:720x400@70 48:1600x1200@60 49:1280x1024@60 50:1024x768@60 51:2560x1600@60 52:1920x1200@60 53:3840x2160@60 54:3200x1800@60 55:2880x1620@60 56:2560x1440@60 57:1920x1080@60 58:1600x900@60 59:1368x768@60 60:1280x720@60 Geometry: 6400,0 3072x1728 Scale: 1.25 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: unknown HDR: disabled Wide Color Gamut: incapable ICC profile: none ```
Just updated to the latest 6.0.3
Is this on Wayland or Xorg?
This is on wayland but I've also just tried it on X11 and the issue is the same. Just to be sure that it works I've tried it with a Windows PC and there the setup works so the cables and monitor settings should be fine.
Okay, then this will be a driver bug. What GPU does your laptop have?
TLDR: - 6700S or 6800S - AMD Ryzen 9 6900HS ---- > inxi -Fxz gives me the following (I've removed some parts that are obviously unnecessary...) CPU: Info: 8-core model: AMD Ryzen 9 6900HS with Radeon Graphics Graphics: Device-1: AMD Navi 23 [Radeon RX 6650 XT / 6700S 6800S] vendor: ASUSTeK driver: amdgpu v: kernel arch: RDNA-2 bus-ID: 03:00.0 Device-2: AMD Rembrandt [Radeon 680M] vendor: ASUSTeK driver: amdgpu v: kernel arch: RDNA-2 bus-ID: 07:00.0 temp: 52.0 C Display: wayland server: X.org v: 1.21.1.12 with: Xwayland v: 23.2.5 compositor: kwin_wayland driver: X: loaded: amdgpu unloaded: modesetting,radeon dri: radeonsi gpu: amdgpu,amdgpu resolution: 1707x1067 API: EGL v: 1.5 drivers: radeonsi,swrast platforms: active: wayland,x11,surfaceless,device inactive: gbm API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 24.0.4-manjaro1.2 glx-v: 1.4 direct-render: yes renderer: AMD Radeon Graphics (radeonsi rembrandt LLVM 17.0.6 DRM 3.57 6.8.4-1-MANJARO)
Would you know any logs that I can have a look at to see what's going wrong? Then I could go and create an issue somewhere else I guess :D
https://invent.kde.org/plasma/kwin/-/wikis/Debugging-DRM-issues describes how to get detailed logs about what the kernel is doing with displays. You can capture the dmesg output with that debugging enabled, and open an issue at https://gitlab.freedesktop.org/drm/amd/-/issues about it
The story continues here: https://gitlab.freedesktop.org/drm/amd/-/issues/3319