Yes it looks like either the kernel driver or Xorg driver is failing to
expose 4K modes, which definitely should be available:
EDID version: 1.3
Manufacturer: SAM Model 3988 Serial Number 0
Made in week 41 of 2018
Digital display
Maximum image size: 70 cm x 39 cm
Gamma: 2.20
DPMS levels: Off
RGB color display
First detailed timing is preferred timing
Color Characteristics
Red: 0.6513, 0.3398
Green: 0.2998, 0.6230
Blue: 0.1494, 0.0712
White: 0.3125, 0.3291
Established Timings I & II
720x400 70.082 Hz 9:5 31.467 kHz 28.320 MHz (IBM)
640x480 59.940 Hz 4:3 31.469 kHz 25.175 MHz (DMT)
640x480 66.667 Hz 4:3 35.000 kHz 30.240 MHz (Apple)
640x480 72.809 Hz 4:3 37.861 kHz 31.500 MHz (DMT)
640x480 75.000 Hz 4:3 37.500 kHz 31.500 MHz (DMT)
800x600 56.250 Hz 4:3 35.156 kHz 36.000 MHz (DMT)
800x600 60.317 Hz 4:3 37.879 kHz 40.000 MHz (DMT)
800x600 72.188 Hz 4:3 48.077 kHz 50.000 MHz (DMT)
800x600 75.000 Hz 4:3 46.875 kHz 49.500 MHz (DMT)
832x624 74.551 Hz 4:3 49.726 kHz 57.284 MHz (Apple)
1024x768 60.004 Hz 4:3 48.363 kHz 65.000 MHz (DMT)
1024x768 70.069 Hz 4:3 56.476 kHz 75.000 MHz (DMT)
1024x768 75.029 Hz 4:3 60.023 kHz 78.750 MHz (DMT)
1280x1024 75.025 Hz 5:4 79.976 kHz 135.000 MHz (DMT)
1152x870 75.062 Hz 192:145 68.681 kHz 100.000 MHz (Apple)
Standard Timings
1152x864 75.000 Hz 4:3 67.500 kHz 108.000 MHz (DMT)
1280x800 59.810 Hz 16:10 49.702 kHz 83.500 MHz (DMT)
1280x720 60.000 Hz 16:9 45.000 kHz 74.250 MHz (DMT)
1280x1024 60.020 Hz 5:4 63.981 kHz 108.000 MHz (DMT)
1440x900 59.887 Hz 16:10 55.935 kHz 106.500 MHz (DMT)
1600x900 60.000 Hz 16:9 60.000 kHz 108.000 MHz (DMT, RB)
1680x1050 59.954 Hz 16:10 65.290 kHz 146.250 MHz (DMT)
Detailed mode: Clock 594.000 MHz, 697 mm x 392 mm
3840 4016 4104 4400 (176 88 296)
2160 2168 2178 2250 ( 8 10 72)
+hsync +vsync
VertFreq: 60.000 Hz, HorFreq: 135.000 kHz
Display Range Limits
Monitor ranges (GTF): 24-75 Hz V, 30-135 kHz H, max dotclock 600 MHz
Display Product Name: U32R59x
Display Product Serial Number: H1AK500000
Has 1 extension block
Checksum: 0x46
----------------
CTA-861 Extension Block Revision 3
Underscans PC formats by default
Basic audio support
Supports YCbCr 4:4:4
Supports YCbCr 4:2:2
0 native detailed modes
48 bytes of CTA data blocks
Video Data Block
3840x2160 60.000 Hz 16:9 135.000 kHz 594.000 MHz (VIC 97)
720x576 50.000 Hz 16:9 31.250 kHz 27.000 MHz (VIC 18)
720x480 59.940 Hz 16:9 31.469 kHz 27.000 MHz (VIC 3)
1280x720 50.000 Hz 16:9 37.500 kHz 74.250 MHz (VIC 19)
1280x720 60.000 Hz 16:9 45.000 kHz 74.250 MHz (VIC 4)
1920x1080 24.000 Hz 16:9 27.000 kHz 74.250 MHz (VIC 32)
1920x1080 30.000 Hz 16:9 33.750 kHz 74.250 MHz (VIC 34)
1920x1080 50.000 Hz 16:9 56.250 kHz 148.500 MHz (VIC 31)
1920x1080 60.000 Hz 16:9 67.500 kHz 148.500 MHz (VIC 16)
3840x2160 30.000 Hz 16:9 67.500 kHz 297.000 MHz (VIC 95)
3840x2160 50.000 Hz 16:9 112.500 kHz 594.000 MHz (VIC 96)
3840x2160 24.000 Hz 16:9 54.000 kHz 297.000 MHz (VIC 93)
3840x2160 25.000 Hz 16:9 56.250 kHz 297.000 MHz (VIC 94)
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
Speaker map:
FL/FR - Front Left/Right
Vendor-Specific Data Block, OUI 0x000c03 (HDMI)
Source physical address 1.0.0.0
Supports_AI
DC_36bit
DC_30bit
DC_Y444
Maximum TMDS clock: 300 MHz
Extended HDMI video details:
HDMI VICs:
3840x2160 30.000 Hz 16:9 67.500 kHz 297.000 MHz (HDMI VIC 1)
3840x2160 25.000 Hz 16:9 56.250 kHz 297.000 MHz (HDMI VIC 2)
3840x2160 24.000 Hz 16:9 54.000 kHz 297.000 MHz (HDMI VIC 3)
Vendor-Specific Data Block, OUI 0xc45dd8 (HDMI Forum)
Version: 1
Maximum TMDS Character Rate: 600 MHz
SCDC Present
Supports 12-bits/component Deep Color 4:2:0 Pixel Encoding
Supports 10-bits/component Deep Color 4:2:0 Pixel Encoding
Extended tag: YCbCr 4:2:0 Capability Map Data Block
3840x2160 60.000 Hz 16:9 135.000 kHz 594.000 MHz (VIC 97)
3840x2160 50.000 Hz 16:9 112.500 kHz 594.000 MHz (VIC 96)
Detailed mode: Clock 148.500 MHz, 697 mm x 392 mm
1920 2008 2052 2200 ( 88 44 148)
1080 1084 1089 1125 ( 4 5 36)
+hsync +vsync
VertFreq: 60.000 Hz, HorFreq: 67.500 kHz
Detailed mode: Clock 148.500 MHz, 697 mm x 392 mm
1920 2448 2492 2640 (528 44 148)
1080 1084 1089 1125 ( 4 5 36)
+hsync +vsync
VertFreq: 50.000 Hz, HorFreq: 56.250 kHz
Detailed mode: Clock 297.000 MHz, 697 mm x 392 mm
3840 4016 4104 4400 (176 88 296)
2160 2168 2178 2250 ( 8 10 72)
+hsync +vsync
VertFreq: 30.000 Hz, HorFreq: 67.500 kHz
Detailed mode: Clock 241.500 MHz, 697 mm x 392 mm
2560 2608 2640 2720 ( 48 32 80)
1440 1443 1448 1481 ( 3 5 33)
+hsync -vsync
VertFreq: 59.951 Hz, HorFreq: 88.787 kHz
Checksum: 0xa0
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https://bugs.launchpad.net/bugs/1893601
Title:
4k not working
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