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#1 2025-07-07 22:06:38

KillReal
Member
Registered: 2025-07-07
Posts: 2

[SOLVED] Kwin wayland cannot select the best monitor resolution

I have faced a couple of problems using my Gigabyte M32U:
1) I cannot select  3840x2160@144Hz. Now i can select modes up to 3840x2160@120Hz only.
2) GPU MCLK stuck at 96Mhz with freesync enabled.

The main problem I'm trying to solve is the mclk getting stuck.
I followed the guide to fix that but couldn't find my current resolution record for editing in edid:
https://gist.github.com/Rend0e/3bddac42 … 326f36f6cc

KDE Plasma 6.4.2
Kernel: 6.15.4-4-cachyos
Graphics Platform: Wayland
GPU: AMD Radeon RX6600M, driver: amdgpu

As I understand it, there is problem with resolution modes from the monitor's edid.
What can be done about this? Maybe someone has ideas?

xrandr --verbose:

Screen 0: minimum 16 x 16, current 3840 x 2160, maximum 32767 x 32767
HDMI-A-1 connected primary 3840x2160+0+0 (0x23) normal (normal left inverted right x axis y axis) 697mm x 392mm
        Identifier: 0x21
        Timestamp:  23913
        Subpixel:   unknown
        Gamma:      1.0:1.0:1.0
        Brightness: 0.0
        Clones:    
        CRTC:       0
        CRTCs:      0
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: 
        RANDR Emulation: 1 
        non-desktop: 0 
                supported: 0, 1
  3840x2160 (0x23) 1498.250MHz -HSync +VSync *current +preferred
        h: width  3840 start 4192 end 4616 total 5392 skew    0 clock 277.87KHz
        v: height 2160 start 2163 end 2168 total 2316           clock 119.98Hz
  2048x1536 (0x24) 563.000MHz -HSync +VSync
        h: width  2048 start 2224 end 2448 total 2848 skew    0 clock 197.68KHz
        v: height 1536 start 1539 end 1543 total 1648           clock 119.95Hz
  1920x1440 (0x25) 495.250MHz -HSync +VSync
        h: width  1920 start 2088 end 2296 total 2672 skew    0 clock 185.35KHz
        v: height 1440 start 1443 end 1447 total 1545           clock 119.97Hz
  1600x1200 (0x26) 343.500MHz -HSync +VSync
        h: width  1600 start 1736 end 1912 total 2224 skew    0 clock 154.45KHz
        v: height 1200 start 1203 end 1207 total 1289           clock 119.82Hz
  1440x1080 (0x27) 276.000MHz -HSync +VSync
        h: width  1440 start 1560 end 1712 total 1984 skew    0 clock 139.11KHz
        v: height 1080 start 1083 end 1087 total 1160           clock 119.92Hz
  1400x1050 (0x28) 260.750MHz -HSync +VSync
        h: width  1400 start 1512 end 1664 total 1928 skew    0 clock 135.24KHz
        v: height 1050 start 1053 end 1057 total 1128           clock 119.90Hz
  1280x1024 (0x29) 232.000MHz -HSync +VSync
        h: width  1280 start 1384 end 1520 total 1760 skew    0 clock 131.82KHz
        v: height 1024 start 1027 end 1034 total 1100           clock 119.83Hz
  1280x960 (0x2a) 217.750MHz -HSync +VSync
        h: width  1280 start 1384 end 1520 total 1760 skew    0 clock 123.72KHz
        v: height  960 start  963 end  967 total 1032           clock 119.89Hz
  1152x864 (0x2b) 176.250MHz -HSync +VSync
        h: width  1152 start 1248 end 1368 total 1584 skew    0 clock 111.27KHz
        v: height  864 start  867 end  871 total  929           clock 119.77Hz
  1024x768 (0x2c) 137.750MHz -HSync +VSync
        h: width  1024 start 1104 end 1208 total 1392 skew    0 clock  98.96KHz
        v: height  768 start  771 end  775 total  826           clock 119.80Hz
  800x600 (0x2d) 83.000MHz -HSync +VSync
        h: width   800 start  856 end  936 total 1072 skew    0 clock  77.43KHz
        v: height  600 start  603 end  607 total  646           clock 119.85Hz
  640x480 (0x2e) 52.500MHz -HSync +VSync
        h: width   640 start  680 end  744 total  848 skew    0 clock  61.91KHz
        v: height  480 start  483 end  487 total  518           clock 119.52Hz
  320x240 (0x2f) 12.250MHz -HSync +VSync
        h: width   320 start  328 end  360 total  400 skew    0 clock  30.62KHz
        v: height  240 start  243 end  247 total  261           clock 117.34Hz
  2560x1600 (0x30) 734.750MHz -HSync +VSync
        h: width  2560 start 2784 end 3064 total 3568 skew    0 clock 205.93KHz
        v: height 1600 start 1603 end 1609 total 1717           clock 119.93Hz
  1920x1200 (0x31) 410.500MHz -HSync +VSync
        h: width  1920 start 2080 end 2288 total 2656 skew    0 clock 154.56KHz
        v: height 1200 start 1203 end 1209 total 1289           clock 119.90Hz
  1680x1050 (0x32) 313.750MHz -HSync +VSync
        h: width  1680 start 1816 end 2000 total 2320 skew    0 clock 135.24KHz
        v: height 1050 start 1053 end 1059 total 1128           clock 119.89Hz
  1440x900 (0x33) 228.250MHz -HSync +VSync
        h: width  1440 start 1552 end 1704 total 1968 skew    0 clock 115.98KHz
        v: height  900 start  903 end  909 total  967           clock 119.94Hz
  1280x800 (0x34) 179.750MHz -HSync +VSync
        h: width  1280 start 1376 end 1512 total 1744 skew    0 clock 103.07KHz
        v: height  800 start  803 end  809 total  860           clock 119.85Hz
  1152x720 (0x35) 145.500MHz -HSync +VSync
        h: width  1152 start 1240 end 1360 total 1568 skew    0 clock  92.79KHz
        v: height  720 start  723 end  729 total  775           clock 119.73Hz
  960x600 (0x36) 100.250MHz -HSync +VSync
        h: width   960 start 1032 end 1128 total 1296 skew    0 clock  77.35KHz
        v: height  600 start  603 end  609 total  646           clock 119.74Hz
  928x580 (0x37) 93.250MHz -HSync +VSync
        h: width   928 start  992 end 1088 total 1248 skew    0 clock  74.72KHz
        v: height  580 start  583 end  589 total  625           clock 119.55Hz
  800x500 (0x38) 68.000MHz -HSync +VSync
        h: width   800 start  848 end  928 total 1056 skew    0 clock  64.39KHz
        v: height  500 start  503 end  509 total  539           clock 119.47Hz
  768x480 (0x39) 63.500MHz -HSync +VSync
        h: width   768 start  816 end  896 total 1024 skew    0 clock  62.01KHz
        v: height  480 start  483 end  489 total  518           clock 119.71Hz
  720x480 (0x3a) 59.500MHz -HSync +VSync
        h: width   720 start  768 end  840 total  960 skew    0 clock  61.98KHz
        v: height  480 start  483 end  493 total  518           clock 119.65Hz
  640x400 (0x3b) 43.000MHz -HSync +VSync
        h: width   640 start  672 end  736 total  832 skew    0 clock  51.68KHz
        v: height  400 start  403 end  409 total  432           clock 119.64Hz
  320x200 (0x3c) 10.250MHz -HSync +VSync
        h: width   320 start  328 end  360 total  400 skew    0 clock  25.62KHz
        v: height  200 start  203 end  209 total  218           clock 117.55Hz
  3200x1800 (0x3d) 1037.750MHz -HSync +VSync
        h: width  3200 start 3488 end 3840 total 4480 skew    0 clock 231.64KHz
        v: height 1800 start 1803 end 1808 total 1931           clock 119.96Hz
  2880x1620 (0x3e) 837.250MHz -HSync +VSync
        h: width  2880 start 3128 end 3448 total 4016 skew    0 clock 208.48KHz
        v: height 1620 start 1623 end 1628 total 1738           clock 119.95Hz
  2560x1440 (0x3f) 661.250MHz -HSync +VSync
        h: width  2560 start 2784 end 3064 total 3568 skew    0 clock 185.33KHz
        v: height 1440 start 1443 end 1448 total 1545           clock 119.95Hz
  2048x1152 (0x40) 420.250MHz -HSync +VSync
        h: width  2048 start 2216 end 2440 total 2832 skew    0 clock 148.39KHz
        v: height 1152 start 1155 end 1160 total 1237           clock 119.96Hz
  1920x1080 (0x41) 369.500MHz -HSync +VSync
        h: width  1920 start 2080 end 2288 total 2656 skew    0 clock 139.12KHz
        v: height 1080 start 1083 end 1088 total 1160           clock 119.93Hz
  1600x900 (0x42) 254.250MHz -HSync +VSync
        h: width  1600 start 1728 end 1896 total 2192 skew    0 clock 115.99KHz
        v: height  900 start  903 end  908 total  967           clock 119.95Hz
  1368x768 (0x43) 184.500MHz -HSync +VSync
        h: width  1368 start 1472 end 1616 total 1864 skew    0 clock  98.98KHz
        v: height  768 start  771 end  781 total  826           clock 119.83Hz
  1280x720 (0x44) 162.000MHz -HSync +VSync
        h: width  1280 start 1376 end 1512 total 1744 skew    0 clock  92.89KHz
        v: height  720 start  723 end  728 total  775           clock 119.86Hz
  1024x576 (0x45) 102.250MHz -HSync +VSync
        h: width  1024 start 1096 end 1200 total 1376 skew    0 clock  74.31KHz
        v: height  576 start  579 end  584 total  620           clock 119.85Hz
  864x486 (0x46) 72.250MHz -HSync +VSync
        h: width   864 start  920 end 1008 total 1152 skew    0 clock  62.72KHz
        v: height  486 start  489 end  494 total  524           clock 119.69Hz
  720x400 (0x47) 48.750MHz -HSync +VSync
        h: width   720 start  760 end  832 total  944 skew    0 clock  51.64KHz
        v: height  400 start  403 end  413 total  432           clock 119.54Hz
  640x350 (0x48) 37.500MHz -HSync +VSync
        h: width   640 start  672 end  736 total  832 skew    0 clock  45.07KHz
        v: height  350 start  353 end  363 total  378           clock 119.24Hz

decoded edid:

00 ff ff ff ff ff ff 00 1c 54 04 32 01 01 01 01
01 1e 01 03 80 46 27 78 3a e1 b5 ad 50 45 a0 25
0d 50 54 bf cf 00 71 4f 81 c0 81 40 81 80 d1 c0
d1 fc 95 00 b3 00 08 e8 00 30 f2 70 5a 80 b0 58
8a 00 b9 88 21 00 00 1a 56 5e 00 a0 a0 a0 29 50
30 20 35 00 b9 88 21 00 00 1a 00 00 00 fd 00 30
90 1e ff 83 00 0a 20 20 20 20 20 20 00 00 00 fc
00 47 69 67 61 62 79 74 65 20 4d 33 32 55 02 65

02 03 61 f2 57 5d 5e 5f 60 61 01 40 03 11 12 13
04 0e 0f 1d 1e 1f 90 3f 75 76 2f 20 23 09 07 07
83 01 00 00 6d 03 0c 00 10 00 38 3c 20 00 60 01
02 03 6d d8 5d c4 01 78 c0 33 0f 30 90 c3 34 0c
6d 1a 00 00 02 0b 30 90 e6 05 65 3c 65 3c e3 05
c3 01 e4 0f 18 00 18 e6 06 05 01 65 65 12 e2 00
d5 6f c2 00 a0 a0 a0 55 50 30 20 35 00 b9 88 21
00 00 1a 00 00 00 00 00 00 00 00 00 00 00 00 04

70 12 79 00 00 03 01 3c b9 fd 01 84 ff 0e 4f 00
07 00 1f 00 6f 08 99 00 45 00 07 00 eb a3 01 04
ff 0e 4f 00 07 00 1f 00 6f 08 7e 00 70 00 07 00
fb 7e 00 04 7f 07 87 00 17 80 1f 00 37 04 11 00
02 80 04 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 89 90

----------------

Block 0, Base EDID:
  EDID Structure Version & Revision: 1.3
  Vendor & Product Identification:
    Manufacturer: GBT
    Model: 12804
    Serial Number: 16843009 (0x01010101)
    Made in: week 1 of 2020
  Basic Display Parameters & Features:
    Digital display
    Maximum image size: 70 cm x 39 cm
    Gamma: 2.20
    DPMS levels: Off
    Undefined display color type
    First detailed timing is the preferred timing
  Color Characteristics:
    Red  : 0.6787, 0.3144
    Green: 0.2695, 0.6259
    Blue : 0.1464, 0.0537
    White: 0.3134, 0.3291
  Established Timings I & II:
    IBM     :   720x400    70.081663 Hz   9:5     31.467 kHz     28.320000 MHz
    DMT 0x04:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
    Apple   :   640x480    66.666667 Hz   4:3     35.000 kHz     30.240000 MHz
    DMT 0x05:   640x480    72.808802 Hz   4:3     37.861 kHz     31.500000 MHz
    DMT 0x06:   640x480    75.000000 Hz   4:3     37.500 kHz     31.500000 MHz
    DMT 0x08:   800x600    56.250000 Hz   4:3     35.156 kHz     36.000000 MHz
    DMT 0x09:   800x600    60.316541 Hz   4:3     37.879 kHz     40.000000 MHz
    DMT 0x0a:   800x600    72.187572 Hz   4:3     48.077 kHz     50.000000 MHz
    DMT 0x0b:   800x600    75.000000 Hz   4:3     46.875 kHz     49.500000 MHz
    DMT 0x10:  1024x768    60.003840 Hz   4:3     48.363 kHz     65.000000 MHz
    DMT 0x11:  1024x768    70.069359 Hz   4:3     56.476 kHz     75.000000 MHz
    DMT 0x12:  1024x768    75.028582 Hz   4:3     60.023 kHz     78.750000 MHz
    DMT 0x24:  1280x1024   75.024675 Hz   5:4     79.976 kHz    135.000000 MHz
  Standard Timings:
    DMT 0x15:  1152x864    75.000000 Hz   4:3     67.500 kHz    108.000000 MHz
    DMT 0x55:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
    DMT 0x20:  1280x960    60.000000 Hz   4:3     60.000 kHz    108.000000 MHz
    DMT 0x23:  1280x1024   60.019740 Hz   5:4     63.981 kHz    108.000000 MHz
    DMT 0x52:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz
    GTF     :  1920x1080  119.999987 Hz  16:9    138.840 kHz    368.759000 MHz
    DMT 0x2f:  1440x900    59.887445 Hz  16:10    55.935 kHz    106.500000 MHz
    DMT 0x3a:  1680x1050   59.954250 Hz  16:10    65.290 kHz    146.250000 MHz
  Detailed Timing Descriptors:
    DTD 1:  3840x2160   60.000000 Hz  16:9    135.000 kHz    594.000000 MHz (697 mm x 392 mm)
                 Hfront  176 Hsync  88 Hback  296 Hpol P
                 Vfront    8 Vsync  10 Vback   72 Vpol N
    DTD 2:  2560x1440   59.950550 Hz  16:9     88.787 kHz    241.500000 MHz (697 mm x 392 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol P
                 Vfront    3 Vsync   5 Vback   33 Vpol N
    Display Range Limits:
      Monitor ranges (GTF): 48-144 Hz V, 30-255 kHz H, max dotclock 1310 MHz
    Display Product Name: 'Gigabyte M32U'
  Extension blocks: 2
Checksum: 0x65

----------------

Block 1, CTA-861 Extension Block:
  Revision: 3
  Underscans IT Video Formats by default
  Basic audio support
  Supports YCbCr 4:4:4
  Supports YCbCr 4:2:2
  Native detailed modes: 2
  Video Data Block:
    VIC  93:  3840x2160   24.000000 Hz  16:9     54.000 kHz    297.000000 MHz
    VIC  94:  3840x2160   25.000000 Hz  16:9     56.250 kHz    297.000000 MHz
    VIC  95:  3840x2160   30.000000 Hz  16:9     67.500 kHz    297.000000 MHz
    VIC  96:  3840x2160   50.000000 Hz  16:9    112.500 kHz    594.000000 MHz
    VIC  97:  3840x2160   60.000000 Hz  16:9    135.000 kHz    594.000000 MHz
    VIC   1:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
    VIC  64:  1920x1080  100.000000 Hz  16:9    112.500 kHz    297.000000 MHz
    VIC   3:   720x480    59.940060 Hz  16:9     31.469 kHz     27.000000 MHz
    VIC  17:   720x576    50.000000 Hz   4:3     31.250 kHz     27.000000 MHz
    VIC  18:   720x576    50.000000 Hz  16:9     31.250 kHz     27.000000 MHz
    VIC  19:  1280x720    50.000000 Hz  16:9     37.500 kHz     74.250000 MHz
    VIC   4:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
    VIC  14:  1440x480    59.940060 Hz   4:3     31.469 kHz     54.000000 MHz
    VIC  15:  1440x480    59.940060 Hz  16:9     31.469 kHz     54.000000 MHz
    VIC  29:  1440x576    50.000000 Hz   4:3     31.250 kHz     54.000000 MHz
    VIC  30:  1440x576    50.000000 Hz  16:9     31.250 kHz     54.000000 MHz
    VIC  31:  1920x1080   50.000000 Hz  16:9     56.250 kHz    148.500000 MHz
    VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (native)
    VIC  63:  1920x1080  120.000000 Hz  16:9    135.000 kHz    297.000000 MHz
    VIC 117:  3840x2160  100.000000 Hz  16:9    225.000 kHz   1188.000000 MHz
    VIC 118:  3840x2160  120.000000 Hz  16:9    270.000 kHz   1188.000000 MHz
    VIC  47:  1280x720   120.000000 Hz  16:9     90.000 kHz    148.500000 MHz
    VIC  32:  1920x1080   24.000000 Hz  16:9     27.000 kHz     74.250000 MHz
  Audio Data Block:
    Linear PCM:
      Max channels: 2
      Supported sample rates (kHz): 48 44.1 32
      Supported sample sizes (bits): 24 20 16
  Speaker Allocation Data Block:
    FL/FR - Front Left/Right
  Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
    Source physical address: 1.0.0.0
    DC_36bit
    DC_30bit
    DC_Y444
    Maximum TMDS clock: 300 MHz
    Extended HDMI video details:
      HDMI VICs:
        HDMI VIC 1:  3840x2160   30.000000 Hz  16:9     67.500 kHz    297.000000 MHz
        HDMI VIC 2:  3840x2160   25.000000 Hz  16:9     56.250 kHz    297.000000 MHz
        HDMI VIC 3:  3840x2160   24.000000 Hz  16:9     54.000 kHz    297.000000 MHz
  Vendor-Specific Data Block (HDMI Forum), OUI C4-5D-D8:
    Version: 1
    Maximum TMDS Character Rate: 600 MHz
    SCDC Present
    SCDC Read Request Capable
    Max Fixed Rate Link: 3 and 6 Gbps per lane on 3 lanes, 6 Gbps on 4 lanes
    Supports 12-bits/component Deep Color 4:2:0 Pixel Encoding
    Supports 10-bits/component Deep Color 4:2:0 Pixel Encoding
    Supports negative Mvrr values
    Supports Fast Vactive
    Supports Auto Low-Latency Mode
    Supports a FAPA in blanking after first active video line
    VRRmin: 48 Hz
    VRRmax: 144 Hz
    Supports VESA DSC 1.2a compression
    Supports Compressed Video Transport for 4:2:0 Pixel Encoding
    Supports 12 bpc Compressed Video Transport
    Supports 10 bpc Compressed Video Transport
    DSC Max Slices: up to 8 slices and up to (340 MHz/Ksliceadjust) pixel clock per slice
    DSC Max Fixed Rate Link: 3 and 6 Gbps per lane on 3 lanes, 6 Gbps on 4 lanes
    Maximum number of bytes in a line of chunks: 13312
  Vendor-Specific Data Block (AMD), OUI 00-00-1A:
    Version: 2
    Feature Caps: 0x0b
    Minimum Refresh Rate: 48 Hz
    Maximum Refresh Rate: 144 Hz
    Flags 1.x: 0xe6 (MCCS)
    Flags 2.x: 0x05
    Maximum luminance: 101 (445.755 cd/m^2)
    Minimum luminance: 60 (0.247 cd/m^2)
    Maximum luminance (without local dimming): 101 (445.755 cd/m^2)
    Minimum luminance (without local dimming): 60 (0.247 cd/m^2)
  Colorimetry Data Block:
    xvYCC601
    xvYCC709
    BT2020YCC
    BT2020RGB
    Gamut Boundary Description Metadata Profile P0
  YCbCr 4:2:0 Capability Map Data Block:
    VIC  96:  3840x2160   50.000000 Hz  16:9    112.500 kHz    594.000000 MHz
    VIC  97:  3840x2160   60.000000 Hz  16:9    135.000 kHz    594.000000 MHz
    VIC 117:  3840x2160  100.000000 Hz  16:9    225.000 kHz   1188.000000 MHz
    VIC 118:  3840x2160  120.000000 Hz  16:9    270.000 kHz   1188.000000 MHz
  HDR Static Metadata Data Block:
    Electro optical transfer functions:
      Traditional gamma - SDR luminance range
      SMPTE ST2084
    Supported static metadata descriptors:
      Static metadata type 1
    Desired content max luminance: 101 (445.755 cd/m^2)
    Desired content max frame-average luminance: 101 (445.755 cd/m^2)
    Desired content min luminance: 18 (0.022 cd/m^2)
  Video Capability Data Block:
    YCbCr quantization: Selectable (via AVI YQ)
    RGB quantization: Selectable (via AVI Q)
    PT scan behavior: Always Overscanned
    IT scan behavior: Always Overscanned
    CE scan behavior: Always Overscanned
  Detailed Timing Descriptors:
    DTD 3:  2560x1440  119.997589 Hz  16:9    182.996 kHz    497.750000 MHz (697 mm x 392 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol P
                 Vfront    3 Vsync   5 Vback   77 Vpol N
Checksum: 0x04  Unused space in Extension Block: 12 bytes

----------------

Block 2, DisplayID Extension Block:
  Version: 1.2
  Extension Count: 0
  Display Product Type: Extension Section
  Video Timing Modes Type 1 - Detailed Timings Data Block:
    DTD:  3840x2160  143.855943 Hz  16:9    332.883 kHz   1304.900000 MHz (aspect 16:9, no 3D stereo, preferred)
               Hfront    8 Hsync  32 Hback   40 Hpol N
               Vfront   70 Vsync   8 Vback   76 Vpol N
    DTD:  3840x2160  119.910229 Hz  16:9    274.235 kHz   1075.000000 MHz (aspect 16:9, no 3D stereo)
               Hfront    8 Hsync  32 Hback   40 Hpol N
               Vfront  113 Vsync   8 Vback    6 Vpol N
    DTD:  1920x1080  144.000765 Hz  16:9    158.113 kHz    325.080000 MHz (aspect 16:9, no 3D stereo)
               Hfront   24 Hsync  32 Hback   80 Hpol P
               Vfront    3 Vsync   5 Vback   10 Vpol P
  Checksum: 0x89
Checksum: 0x90

drm logs:

cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:3840  height:2160
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 3840x2160 (clk 1304900) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 3840x2160 (clk 1304900) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] create_validate_stream_for_sink:7504 Retry forcing yuv420 encoding
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:3840  height:2160
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 3840x2160 (clk 1304900) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:3840  height:2160
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 3840x2160 (clk 1304900) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:3840  height:2160
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 3840x2160 (clk 1075000) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:3840  height:2160
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 3840x2160 (clk 1075000) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] create_validate_stream_for_sink:7504 Retry forcing yuv420 encoding
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:3840  height:2160
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 3840x2160 (clk 1075000) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:3840  height:2160
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 3840x2160 (clk 1075000) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1280  height:800
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1280x800 (clk 1304900) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1280  height:800
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1280x800 (clk 1304900) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] create_validate_stream_for_sink:7504 Retry forcing yuv420 encoding
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1280  height:800
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1280x800 (clk 1304900) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1280  height:800
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1280x800 (clk 1304900) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1600  height:1200
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1600x1200 (clk 1304900) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1600  height:1200
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1600x1200 (clk 1304900) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] create_validate_stream_for_sink:7504 Retry forcing yuv420 encoding
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1600  height:1200
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1600x1200 (clk 1304900) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1600  height:1200
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1600x1200 (clk 1304900) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1920  height:1200
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1920x1200 (clk 1304900) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1920  height:1200
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1920x1200 (clk 1304900) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] create_validate_stream_for_sink:7504 Retry forcing yuv420 encoding
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1920  height:1200
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1920x1200 (clk 1304900) pixel_encoding:YUV444 color_depth:10-bpc failed validation -- Encoder validation failure
cachy kernel: [drm:update_stream_scaling_settings [amdgpu]] Destination Rectangle x:0  y:0  width:1920  height:1200
cachy kernel: [drm:create_validate_stream_for_sink [amdgpu]] Mode 1920x1200 (clk 1304900) pixel_encoding:YUV444 color_depth:8-bpc failed validation -- Encoder validation failure
cachy kernel: amdgpu 0000:03:00.0: [drm:drm_mode_prune_invalid] Rejected mode: "3840x2160": 144 1304900 3840 3848 3880 3920 2160 2230 2238 2314 0x48 0xa (ERROR)
cachy kernel: amdgpu 0000:03:00.0: [drm:drm_mode_prune_invalid] Rejected mode: "3840x2160": 120 1075000 3840 3848 3880 3920 2160 2273 2281 2287 0x40 0xa (ERROR)
cachy kernel: amdgpu 0000:03:00.0: [drm:drm_mode_prune_invalid] Rejected mode: "1280x800": 144 1304900 1280 3848 3880 3920 800 2230 2238 2314 0x40 0xa (ERROR)
cachy kernel: amdgpu 0000:03:00.0: [drm:drm_mode_prune_invalid] Rejected mode: "1600x1200": 144 1304900 1600 3848 3880 3920 1200 2230 2238 2314 0x40 0xa (ERROR)
cachy kernel: amdgpu 0000:03:00.0: [drm:drm_mode_prune_invalid] Rejected mode: "1920x1200": 144 1304900 1920 3848 3880 3920 1200 2230 2238 2314 0x40 0xa (ERROR)

Last edited by KillReal (2025-07-08 17:02:09)

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#2 2025-07-08 09:40:50

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 24,593

Re: [SOLVED] Kwin wayland cannot select the best monitor resolution

AMD has been forbidden from implementing HDMI 2.1 in the open drivers. You might not be able to get around this at all. For 3840x2160@144Hz you'd need 2.1 HDMI protocol cabability on the cable and on the operating system: https://en.wikipedia.org/wiki/HDMI#Refr … dard_video . You can't get the latter on amdgpu. Yes it's stupid politics and greedy license disputes. Your best bet is switching to displayport if possible.

As for the clocking issue, there are currently some general bugs there in the kernel since 6.15. Instead of fiddling with the EDID, does setting the power profile to high help? https://wiki.archlinux.org/title/AMDGPU … nce_levels

Last edited by V1del (2025-07-08 09:47:44)

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#3 2025-07-08 16:58:17

KillReal
Member
Registered: 2025-07-07
Posts: 2

Re: [SOLVED] Kwin wayland cannot select the best monitor resolution

Unfortunately, I can only switch to USB4 which is iGPU output. I tested it, and yep, 3840x2160@144Hz + freesync works. However, this had a 20% performance hit and noticeable input lag.

I tested different things, video outputs, and power profiles. I'm not sure what exactly did the trick, but now 3840x2160@120Hz + freesync works flawlessly through HDMI and auto profile.
So I'll stick with this setup. Thanks a lot for the info!

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