30Hz only on Intel UHD on LE 8.90.008

  • Hi,


    CPU/GPU is Pentium Gold G5600 (Coffee Lake with Intel UHD 630 graphics).

    Mainboard: ASUS H370-I (DP and HDMI 1.4 ports), Yamaha AV receiver connecter via DP port through Club 3D CAC-1070 DP to HDMI 2.0 adapter.


    Issue:

    At 4K resolution refresh rate is limited to max. 30Hz only. On Windows using DP port and this P to HDMI adapter I'm getting 4K/60Hz even in 4:4:4 (RGB) mode with no issues.

    I borrowed this adapter to a collegue that has Penttium G4560 (Kaby Lake with HD 610) - he's getting 4K/60Hz with LE 9 (unsure which build though).


    So I guess this is driver limitation in LE 9 on UHD graphics ?

  • Hmm... Since I'm looking into those things too (upgrading my PCs) it's always useful to find things like this. According to Intel white paper (page 13) HDR compatibility on 7th or 8-th gen is guaranteed with min. DP 1.3 or HDMI 2.0a with HDCP 2.2 support . Your adapter is DP 1.2->HDMI 2.0 (I couldn't find is it plain HDMI 2.0 or a/b revision).


    As I painfully learned, It's really, really important to get compatibility right in HDR PC world.


    Did you try setup without AVR?

  • Hi,


    Club 3D CAC-1070 is DP 1.2+HDMI 2.0 only, so it does not support HDR (2.0a required) or even 3D (DP 1.4 required). But it does the job of 4K/60Hz under Windows, sadly not under LE.

    Previously I was trying AMD's RX 550 which has native HDMI 2.0a (or b, unsure) and again under LE9 4K output was limited to 30 Hz....


    However I realized Club 3D has a newer version of this DP-HDMI adapter called CAC-1080 that supports DP1.4 on input and HDMI 2.0b on output. It's then both 3D and HDR compatible. I ordered it already and going to give it a try.


    But what concerns me is that CAC-1070 in my colleague's HTPC (with Kaby Lake HD610) does give 4K/60Hz output but not with my Coffee Lake/UHD 630.

  • Hahaha, just now when you replied I was going to ask you do you have experience with CAC-1080 adapter.

    Now I'm sutck too with my experimental setup. I just installed latest LE alpha (8) and put in RX 580. I have [email protected], but not HDR! No matter what I try I am stuck at SDR. Under Windows I'm getting HDR and it's working properly. But under LE - no.


    Check this AMD link and look under Connectivity. It's written Display Port 1.4 HDR, but on HDMI it's not written HDR. Maybe, just maybe this has some relevance (don't laugh - I'm desperate here)... Uhhh, I don't know anymore. After 3 days I'm really ready to give up.

  • Yes, I'm aware of that too, HDR under LE is not my expectation (at least for now). My TV is 4K non-HDR. My my mkv's are 4K HDR though so I'm more interested in getting HDR to SDR conversion which seems to work in Kodi 18 !?

    And in getting 4K/60Hz.


    If someone wants to see my logs (logging enabled and LE rebooted, then logs sent):

    http://ix.io/1uzg


    CAC-1070 does not sem to handle passthorugh audio to receiver correctly either (under LE8). Under latest firmware 7.55 it's total crap (almost no sound at all), under some older DTS/AC3 work fine but not DTS-HD nor TrueHD. No issues under Windows though... It seems the adapter seems to be more Windows-friendly.

  • I think it's a kind of a bug.


    What xrandr is returning:


    KODI:~ # xrandr

    Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 32767 x 32767

    DP1 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 1210mm x 680mm

    1920x1080 60.00 + 50.00 59.94 30.00 25.00 24.00 29.97 23.98

    4096x2160 30.00 25.00 24.00 29.97 23.98

    3840x2160 30.00* 25.00 24.00 29.97 23.98

    1920x1080i 60.00 50.00 59.94

    1680x1050 59.88

    1600x900 60.00

    1280x1024 75.02 60.02

    1440x900 59.90

    1366x768 59.79

    1280x800 59.91

    1152x864 75.00

    1280x720 60.00 50.00 59.94

    1024x768 75.03 70.07 60.00

    832x624 74.55

    800x600 72.19 75.00 60.32

    720x576 50.00

    720x480 60.00 59.94

    640x480 75.00 72.81 66.67 60.00 59.94

    720x400 70.08

    HDMI1 disconnected (normal left inverted right x axis y axis)

    HDMI2 disconnected (normal left inverted right x axis y axis)

    VIRTUAL1 disconnected (normal left inverted right x axis y axis)


    So horizontal resolution of 4096 (my TV does support that but cuts side edges of the picture) and 3840 are indeed limited to 30Hz.



    But let's see this:


    KODI:~ # cat /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1/edid | edid-decode

    Extracted contents:

    header: 00 ff ff ff ff ff ff 00

    serial number: 4c 2d 90 0b 01 00 00 00 02 18

    version: 01 03

    basic params: 80 79 44 78 0a

    chroma info: ee 91 a3 54 4c 99 26 0f 50 54

    established: bd ef 80

    standard: 71 4f 81 c0 81 00 81 80 95 00 a9 c0 b3 00 01 01

    descriptor 1: 02 3a 80 18 71 38 2d 40 58 2c 45 00 50 1d 74 00 00 1e

    descriptor 2: 01 1d 80 d0 72 1c 16 20 10 2c 25 80 50 1d 74 00 00 9e

    descriptor 3: 00 00 00 fd 00 18 4b 0f 79 1e 00 0a 20 20 20 20 20 20

    descriptor 4: 00 00 00 fc 00 53 41 4d 53 55 4e 47 0a 20 20 20 20 20

    extensions: 01

    checksum: a5


    EDID version: 1.3

    Manufacturer: SAM Model b90 Serial Number 1

    Made in week 2 of 2014

    Digital display

    Maximum image size: 121 cm x 68 cm

    Gamma: 2.20

    RGB color display

    First detailed timing is preferred timing

    Display x,y Chromaticity:

    Red: 0.6396, 0.3300

    Green: 0.2998, 0.5996

    Blue: 0.1503, 0.0595

    White: 0.3125, 0.3291

    Established timings supported:

    [email protected] 9:5 HorFreq: 31469 Hz Clock: 28.320 MHz

    [email protected] 4:3 HorFreq: 31469 Hz Clock: 25.175 MHz

    [email protected] 4:3 HorFreq: 35000 Hz Clock: 30.240 MHz

    [email protected] 4:3 HorFreq: 37900 Hz Clock: 31.500 MHz

    [email protected] 4:3 HorFreq: 37500 Hz Clock: 31.500 MHz

    [email protected] 4:3 HorFreq: 37900 Hz Clock: 40.000 MHz

    [email protected] 4:3 HorFreq: 48100 Hz Clock: 50.000 MHz

    [email protected] 4:3 HorFreq: 46900 Hz Clock: 49.500 MHz

    [email protected] 4:3 HorFreq: 49726 Hz Clock: 57.284 MHz

    [email protected] 4:3 HorFreq: 48400 Hz Clock: 65.000 MHz

    [email protected] 4:3 HorFreq: 56500 Hz Clock: 75.000 MHz

    [email protected] 4:3 HorFreq: 60000 Hz Clock: 78.750 MHz

    [email protected] 5:4 HorFreq: 80000 Hz Clock: 135.000 MHz

    [email protected] 192:145 HorFreq: 67500 Hz Clock: 108.000 MHz

    Standard timings supported:

    [email protected] 4:3 HorFreq: 67500 Hz Clock: 108.000 MHz

    [email protected] 16:9

    [email protected] 16:10

    [email protected] 5:4 HorFreq: 64000 Hz Clock: 108.000 MHz

    [email protected] 16:10 HorFreq: 55500 Hz Clock: 88.750 MHz

    [email protected] 16:9

    [email protected] 16:10 HorFreq: 64700 Hz Clock: 119.000 MHz

    Detailed mode: Clock 148.500 MHz, 1872 mm x 1053 mm

    1920 2008 2052 2200 hborder 0

    1080 1084 1089 1125 vborder 0

    +hsync +vsync

    VertFreq: 60 Hz, HorFreq: 67500 Hz

    Detailed mode: Clock 74.250 MHz, 1872 mm x 1053 mm

    1920 2448 2492 2640 hborder 0

    540 542 547 562 vborder 0

    +hsync +vsync interlaced

    VertFreq: 50 Hz, HorFreq: 28125 Hz

    Monitor ranges (GTF): 24-75Hz V, 15-121kHz H, max dotclock 300MHz

    Monitor name: SAMSUNG

    Has 1 extension blocks

    Checksum: 0xa5 (valid)


    CTA extension block

    Extension version: 3

    94 bytes of CTA data

    Video data block

    VIC 97 [email protected] 16:9 HorFreq: 135000 Hz Clock: 594.000 MHz

    VIC 16 [email protected] 16:9 HorFreq: 67500 Hz Clock: 148.500 MHz

    VIC 31 [email protected] 16:9 HorFreq: 56250 Hz Clock: 148.500 MHz

    VIC 4 [email protected] 16:9 HorFreq: 45000 Hz Clock: 74.250 MHz

    VIC 19 [email protected] 16:9 HorFreq: 37500 Hz Clock: 74.250 MHz

    VIC 5 [email protected] 16:9 HorFreq: 33750 Hz Clock: 74.250 MHz

    VIC 20 [email protected] 16:9 HorFreq: 28125 Hz Clock: 74.250 MHz

    VIC 32 [email protected] 16:9 HorFreq: 27000 Hz Clock: 74.250 MHz

    VIC 33 [email protected] 16:9 HorFreq: 28125 Hz Clock: 74.250 MHz

    VIC 34 [email protected] 16:9 HorFreq: 33750 Hz Clock: 74.250 MHz

    VIC 93 [email protected] 16:9 HorFreq: 54000 Hz Clock: 297.000 MHz

    VIC 94 [email protected] 16:9 HorFreq: 56250 Hz Clock: 297.000 MHz

    VIC 95 [email protected] 16:9 HorFreq: 67500 Hz Clock: 297.000 MHz

    VIC 96 [email protected] 16:9 HorFreq: 112500 Hz Clock: 594.000 MHz

    VIC 101 [email protected] 256:135 HorFreq: 112500 Hz Clock: 594.000 MHz

    VIC 102 [email protected] 256:135 HorFreq: 135000 Hz Clock: 594.000 MHz

    VIC 98 [email protected] 256:135 HorFreq: 54000 Hz Clock: 297.000 MHz

    VIC 99 [email protected] 256:135 HorFreq: 56250 Hz Clock: 297.000 MHz

    VIC 100 [email protected] 256:135 HorFreq: 67500 Hz Clock: 297.000 MHz

    VIC 7 [email protected] 16:9 HorFreq: 15734 Hz Clock: 27.000 MHz

    VIC 22 [email protected] 16:9 HorFreq: 15625 Hz Clock: 27.000 MHz

    VIC 3 [email protected] 16:9 HorFreq: 31469 Hz Clock: 27.000 MHz

    VIC 18 [email protected] 16:9 HorFreq: 31250 Hz Clock: 27.000 MHz

    Audio data block

    Linear PCM, max channels 2

    Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1 32

    Supported sample sizes (bits): 24 20 16

    Linear PCM, max channels 8

    Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1 32

    Supported sample sizes (bits): 24 20 16

    AC-3, max channels 6

    Supported sample rates (kHz): 48 44.1 32

    Maximum bit rate: 640 kHz

    DTS, max channels 7

    Supported sample rates (kHz): 96 88.2 48 44.1 32

    Maximum bit rate: 1536 kHz

    One Bit Audio, max channels 6

    Supported sample rates (kHz): 44.1

    Dolby Digital+, max channels 8

    Supported sample rates (kHz): 48 44.1

    MAT (MLP), max channels 8

    Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1

    DTS-HD, max channels 8

    Supported sample rates (kHz): 192 96 48

    Speaker allocation data block

    Speaker map:

    FL/FR - Front Left/Right

    LFE - Low Frequency Effects

    FC - Front Center

    BL/BR - Back Left/Right

    BC - Back Center

    RLC/RRC - Rear Left/Right of Center

    Extended tag: Video capability data block

    YCbCr quantization: No Data (0)

    RGB quantization: No Data (0)

    PT scan behaviour: No Data (0)

    IT scan behaviour: Support both over- and underscan (3)

    CE scan behaviour: Support both over- and underscan (3)

    Vendor-specific data block, OUI 000c03 (HDMI)

    Source physical address 1.1.0.0

    Supports_AI

    DC_36bit

    DC_30bit

    DC_Y444

    Maximum TMDS clock: 300MHz

    Extended HDMI video details:

    3D present

    3D-capable-VIC mask present

    Base EDID image size is in units of 1cm

    HDMI VIC 1 [email protected] 16:9 HorFreq: 67500 Hz Clock: 297.000 MHz

    HDMI VIC 2 [email protected] 16:9 HorFreq: 56250 Hz Clock: 297.000 MHz

    HDMI VIC 3 [email protected] 16:9 HorFreq: 54000 Hz Clock: 297.000 MHz

    HDMI VIC 4 [email protected] 256:135 HorFreq: 54000 Hz Clock: 297.000 MHz

    3D: Side-by-side (half, horizontal)

    3D VIC indices: 1 2 3 4 7 8 9

    VIC index 1 supports top-and-bottom

    VIC index 2 supports top-and-bottom

    VIC index 8 supports top-and-bottom

    VIC index 9 supports top-and-bottom

    VIC index 5 supports frame packing

    VIC index 6 supports frame packing

    Vendor-specific data block, OUI c45dd8 (HDMI Forum)

    Version: 1

    Maximum TMDS Character Rate: 600MHz

    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

    VSD Index 0

    VSD Index 13

    VSD Index 14

    VSD Index 15

    Underscans PC formats by default

    Basic audio support

    Supports YCbCr 4:4:4

    Supports YCbCr 4:2:2

    3 native detailed modes

    Detailed mode: Clock 85.500 MHz, 1872 mm x 1053 mm

    1366 1436 1579 1792 hborder 0

    768 771 774 798 vborder 0

    +hsync +vsync

    VertFreq: 59 Hz, HorFreq: 47712 Hz

    Checksum: 0x75 (valid)


    One or more of the timings is out of range of the Monitor Ranges:

    Vertical Freq: 24 - 75 Hz

    Horizontal Freq: 15625 - 135000 Hz

    Maximum Clock: 594.000 MHz




    You can clearly see that 4K is supported by my TV at 50 and 60Hz too. Why is this ignored by xrandr - no idea.

    Long story short I added this to /storage/.config/autostart.sh:


    #!/bin/sh

    xrandr --newmode "3840x2160p60" 594.00 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 3840x2160p60


    And now I can select 60Hz for 4K in Kodi. But this is manual workaround.

  • I asked colleague with similar H-series Samsung 4K TV and Pentium G4560 (connected via DP port and my CAC-1070) to provide outputs from xrandr --verbose and was able to add ALL missing modes (4K and "true" 4K, 60Hz, 59,94Hz and 50Hz). Here are the definitions if someone is interested. I guess this can be good for Samsung TV's I guess ?


    Add this to /storage/.config/autostart.sh:


    #!/bin/sh

    xrandr --newmode "3840x2160p60" 594.00 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 3840x2160p60


    xrandr --newmode "4096x2160p60" 594.00 4096 4184 4272 4400 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 4096x2160p60


    xrandr --newmode "4096x2160p50" 594.00 4096 5064 5152 5280 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 4096x2160p50


    xrandr --newmode "4096x2160p59" 593.41 4096 4184 4272 4400 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 4096x2160p59


    xrandr --newmode "3840x2160p50" 594.00 3840 4896 4984 5280 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 3840x2160p50


    xrandr --newmode "3840x2160p59" 593.41 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 3840x2160p59


    Then reboot. After reboot, all missing modes are visible in Kodi, tested and working fine.


    Still it's an open question why on Coffee Lake UHD 630 graphics I have to add it manually and on Kaby Lake HD 610 it's working out of the box.

    EDID is providing required data but XServer is ignoring some modes. Intel driver bug ?

  • Someone asked about CAC-1080. It arrived and does work better than CAC-1070.

    Still some modes are missing but 3840/2160/60Hz is there out of the box, without adding any custom modes.


    And finally all audio passthorugh formats are working under LE ! Even DTS-HD and TrueHD.


    The only downside is that under Windows I'm only getting reduced HDMI range, no matter is set in Intel Windows drivers. So in TV I had to set HDMI range to reduced as well to have correct black level.

    With CAC-1070 both full and reduced worked fine and I was able to get correct black levle on TV by setting TV option to corresponding setting.