https://bugs.kde.org/show_bug.cgi?id=503688
Bug ID: 503688
Summary: Kscreen and Kscreen-doctor are unable to set 4K
resolution on 4K HDMI TV
Classification: Plasma
Product: KScreen
Version: 6.3.4
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: makoto.y...@gmail.com
Target Milestone: ---
Created attachment 180894
--> https://bugs.kde.org/attachment.cgi?id=180894&action=edit
Kscreen crash report
SUMMARY
Since the latest KDE Plasma version, kscreen and kscreen-doctor are unable to
set a 4k resolution @60hz to my HDMI 4k TV.
The setup never changed and worked in KDE Plasma 6.2.x
Other resolutions like 1080p @60hz or 1440p @60hz works fine.
STEPS TO REPRODUCE
1. Open kscreen and activate the TV HDMI output
2. Set a resolution of 3840x2160 at 60hz
Alternatively use kscreen-doctor with the following command:
kscreen-doctor output.HDMI-A-1.priority.1 output.HDMI-A-1.mode.3840x2160@60
OBSERVED RESULT
Under Kscreen: crash (kcrash file in attachement) and no display.
Under kscreen-doctor: the following message appears:
kscreen-doctor output.HDMI-A-1.priority.1 output.HDMI-A-1.mode.3840x2160@60
applying config failed! Driver rejected output configuration.
EXPECTED RESULT:
Display set at 3840x2160 @60hz resolution
SOFTWARE/OS VERSIONS
Linux/KDE Plasma:
Fedora 42 KDE Spin
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.13.0
Qt Version: 6.9.0
ADDITIONAL INFORMATION
Mesa drivers info:
Devices:
========
GPU0:
apiVersion = 1.4.305
driverVersion = 25.0.4
vendorID = 0x1002
deviceID = 0x744c
deviceType = PHYSICAL_DEVICE_TYPE_DISCRETE_GPU
deviceName = AMD Radeon RX 7900 XTX (RADV NAVI31)
driverID = DRIVER_ID_MESA_RADV
driverName = radv
driverInfo = Mesa 25.0.4
conformanceVersion = 1.4.0.0
deviceUUID = 00000000-0300-0000-0000-000000000000
driverUUID = 414d442d-4d45-5341-2d44-525600000000
GPU1:
apiVersion = 1.4.305
driverVersion = 0.0.1
vendorID = 0x10005
deviceID = 0x0000
deviceType = PHYSICAL_DEVICE_TYPE_CPU
deviceName = llvmpipe (LLVM 20.1.2, 256 bits)
driverID = DRIVER_ID_MESA_LLVMPIPE
driverName = llvmpipe
driverInfo = Mesa 25.0.4 (LLVM 20.1.2)
conformanceVersion = 1.3.1.1
deviceUUID = 6d657361-3235-2e30-2e34-000000000000
driverUUID = 6c6c766d-7069-7065-5555-494400000000
Kscreen-doctor infos:
Output: 1 DP-1
enabled
connected
priority 1
DisplayPort
Modes: 1:3440x1440@144! 2:3440x1440@60 3:3440x1440@160*
4:3440x1440@100 5:1920x1200@144 6:1920x1080@75 7:1920x1080@60
8:1920x1080@60 9:1920x1080@60 10:1920x1080@50 11:1600x1200@144
12:1680x1050@60 13:1600x900@60 14:1280x1024@75 15:1280x1024@60
16:1440x900@144 17:1280x800@60 18:1152x864@60 19:1280x720@60 20:1280x720@60
21:1280x720@60 22:1280x720@50 23:1024x768@60 24:800x600@60 25:720x576@50
26:720x480@60 27:720x480@60 28:640x480@60 29:640x480@60 30:640x480@60
31:1600x1200@60 32:1280x1024@60 33:1024x768@60 34:1920x1200@60
35:2560x1440@60 36:1920x1080@60 37:1600x900@60 38:1368x768@60
39:1280x720@60
Geometry: 0,0 3440x1440
Scale: 1
Rotation: 1
Overscan: 0
Vrr: Automatic
RgbRange: unknown
HDR: disabled
Wide Color Gamut: disabled
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: supported, set to 15% and dimming to 100%
Output: 2 DP-3
enabled
connected
priority 2
DisplayPort
Modes: 40:1920x1080@60*! 41:1920x1080@60 42:1920x1080@60
43:1920x1080@50 44:1680x1050@60 45:1280x1024@75 46:1280x1024@70
47:1280x1024@60 48:1440x900@60 49:1280x800@60 50:1152x864@75 51:1280x720@60
52:1280x720@60 53:1280x720@60 54:1280x720@50 55:1024x768@75 56:1024x768@70
57:1024x768@60 58:800x600@75 59:800x600@72 60:800x600@60 61:720x576@50
62:720x576@50 63:720x576@50 64:720x480@60 65:720x480@60 66:720x480@60
67:720x480@60 68:720x480@60 69:640x480@75 70:640x480@73 71:640x480@60
72:640x480@60 73:640x480@60 74:720x400@70 75:1280x1024@60 76:1024x768@60
77:1280x800@60 78:1920x1080@60 79:1600x900@60 80:1368x768@60 81:1280x720@60
Geometry: 3440,180 1920x1080
Scale: 1
Rotation: 1
Overscan: 0
Vrr: incapable
RgbRange: unknown
HDR: incapable
Wide Color Gamut: incapable
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: supported, set to 14% and dimming to 100%
Output: 3 HDMI-A-1
disabled
connected
priority 0
HDMI
Modes: 82:3840x2160@60*! 83:4096x2160@60 84:4096x2160@60
85:4096x2160@50 86:4096x2160@30 87:4096x2160@30 88:4096x2160@25
89:4096x2160@24 90:4096x2160@24 91:3840x2160@60 92:3840x2160@60
93:3840x2160@50 94:3840x2160@30 95:3840x2160@30 96:3840x2160@25
97:3840x2160@24 98:3840x2160@24 99:2560x1440@120 100:1920x1200@60
101:1920x1080@120 102:1920x1080@120 103:1920x1080@100 104:1920x1080@60
105:1920x1080@60 106:1920x1080@60 107:1920x1080@50 108:1920x1080@30
109:1920x1080@30 110:1920x1080@25 111:1920x1080@24 112:1920x1080@24
113:1600x1200@60 114:1680x1050@60 115:1280x1024@60 116:1440x900@60
117:1360x768@60 118:1280x800@60 119:1152x864@60 120:1280x720@60
121:1280x720@60 122:1280x720@50 123:1024x768@60 124:800x600@60
125:720x576@50 126:720x480@60 127:720x480@60 128:720x480@60 129:720x480@60
130:640x480@60 131:640x480@60 132:640x480@60 133:720x400@70
134:1600x1200@60 135:1280x1024@60 136:1024x768@60 137:2560x1600@60
138:1920x1200@60 139:1280x800@60 140:3840x2160@60 141:3200x1800@60
142:2880x1620@60 143:2560x1440@60 144:1920x1080@60 145:1600x900@60
146:1368x768@60 147:1280x720@60
Geometry: 5360,0 3840x2160
Scale: 1
Rotation: 1
Overscan: 0
Vrr: incapable
RgbRange: unknown
HDR: disabled
Wide Color Gamut: disabled
ICC profile: none
Color profile source: sRGB
Color power preference: prefer efficiency and performance
Brightness control: supported, set to 100% and dimming to 100%
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