XGIMI Horizon Ultra 4K projector

QT-Pro · 11 August 2026 08:12

Hi,
I’m running CoreELEC 22.0 Piers beta1 set to automatically download nightly updates. CE is giving a DV error concerning the Android DV kernel module.

I asked Ugoos support about the firmware version and got this reply:
“Hello, We only have Android for our Ugoos devices. Maybe you asked CoreElec ROM, you need to go to CoreElec website to check. Our latest firmware version 0.5.4n2 is Android system only. Thanks.”

I thought this may be due to my plugging the AM6 into a PC monitor, so I plugged it directly into my XGIMI Horizon Ultra projector. I do not get that error with the projector, however when passing DV content through it, the projector’s DV settings says adjustments are only available when DV content is used and will not permit access to those settings.

I am trying to narrow down whether this is caused by CE, the AM6, or the projector.
CE is set to use adaptive HDR.
In CE expert mode, all 4 display settings are disabled.

YadaYada · 11 August 2026 09:50

Use Dovi for CE-NO (5.15_2.6_dovi_patched_fix_fel.ko)

QT-Pro · 11 August 2026 11:21

I have that one on my PC and copied it to the CE installation on the SD card, but I’m not 100% certain that this was the correct way to do it.

MauriceW67 · 11 August 2026 11:28

Did you also rename it to dovi.ko ?

QT-Pro · 11 August 2026 12:12

Yes, I did.

MauriceW67 · 11 August 2026 12:21

And when you go to Settings → System Information → Video, do you see the Dolby Vision capability listed there?

QT-Pro · 11 August 2026 13:30

No. It says something about available HDR sources: None.
So, I guess copy/pasting dovi.ko from my laptop to CE’s root was not the right way to go. The problem is I can’t understand how to use Putty and I assume that’s what is required?

Portisch · 11 August 2026 13:33

Next post from @QT-Pro without any useful and requested debug info will be deleted!

It’s not a hide and seek forum here!

QT-Pro · 13 August 2026 11:21

Issue: Dolby Vision and HDR inactive.
System log at: https://paste.coreelec.org/ProvideGestapo
Debug log at: https://paste.coreelec.org/TransmitIntimacy
Steps taken: downloaded 5.15_2.6_dovi_patched_fix_fel.ko, renamed it to dovi.ko, and copied it to CoreELEC root using copy/paste in Windows. I am guessing this is the cause of my issue.

Device: Ugoos AM6B Plus
SoC: Amlogic S922-X

Display type: XGIMI Horizon Ultra 4K projector with Dolby Vision and HDR-10+
Sound system: Bose Lifestyle V35 5.1 with Acoustimass EQ speakers
Cables: Premium high speed HDMI 2.1 + optical
Player process info: not enabled (Kodi Keymap Editor no longer supported)
Photo/screenshot: attached
Boot method: micro SD card (SanDisk Ultra 64 Gb)

Portisch · 13 August 2026 11:52

++++++++++++++++++++++++++++++++++++++++++++++++++
+ /sys/devices/virtual/amhdmitx/amhdmitx0/dv_cap +
++++++++++++++++++++++++++++++++++++++++++++++++++
The Rx don't support DolbyVision

and no HDR to:

+++++++++++++++++++++++++++++++++++++++++++++++++++
+ /sys/devices/virtual/amhdmitx/amhdmitx0/hdr_cap +
+++++++++++++++++++++++++++++++++++++++++++++++++++
HDR10Plus Supported: 0
HDR Static Metadata:
    Supported EOTF:
        Traditional SDR: 0
        Traditional HDR: 0
        SMPTE ST 2084: 0
        Hybrid Log-Gamma: 0
    Supported SMD type1: 0
    Luminance Data
        Max: 0
        Avg: 0
        Min: 0

HDR Dynamic Metadata:

colorimetry_data: 0

Its’ even not a 4k TV!?

edid-decode (hex):

00 ff ff ff ff ff ff 00 0a 65 01 01 00 00 00 00
ff 13 01 03 80 73 41 78 0a cf 74 a3 57 4c b0 23
09 48 4c 20 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
45 00 c4 8e 21 00 00 1e 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 fc 00 42
4f 53 45 20 4c 53 0a 20 20 20 20 20 00 00 00 fd
00 18 3c 0f 44 0f 00 0a 20 20 20 20 20 20 01 50

02 03 45 71 32 0f 7f 03 15 07 50 3e 1f c0 57 0f
00 5f 7f 01 67 7f 00 52 90 05 04 03 01 12 13 14
16 07 1f 20 22 02 06 11 15 21 83 7f 00 00 73 03
0c 00 12 00 80 1e e0 3d 3d 3d 3d c0 04 00 00 00
00 00 e2 00 7f 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 ac

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

Block 0, Base EDID:
  EDID Structure Version & Revision: 1.3
  Vendor & Product Identification:
    Manufacturer: BSE
    Model: 257
    Model year: 2009
  Basic Display Parameters & Features:
    Digital display
    Maximum image size: 115 cm x 65 cm
    Gamma: 2.20
    RGB color display
    First detailed timing is the preferred timing
  Color Characteristics:
    Red  : 0.6396, 0.3398
    Green: 0.2998, 0.6904
    Blue : 0.1376, 0.0380
    White: 0.2822, 0.2968
  Established Timings I & II:
    DMT 0x04:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
  Standard Timings: none
  Detailed Timing Descriptors:
    DTD 1:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (708 mm x 398 mm)
                 Hfront   88 Hsync  44 Hback  148 Hpol P
                 Vfront    4 Vsync   5 Vback   36 Vpol P
    Empty Descriptor
    Display Product Name: 'BOSE LS'
    Display Range Limits:
      Monitor ranges (GTF): 24-60 Hz V, 15-68 kHz H, max dotclock 150 MHz
  Extension blocks: 1
Checksum: 0x50

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

Block 1, CTA-861 Extension Block:
  Revision: 3
  Basic audio support
  Supports YCbCr 4:4:4
  Supports YCbCr 4:2:2
  Native detailed modes: 1
  Audio Data Block:
    Linear PCM:
      Max channels: 8
      Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1 32
      Supported sample sizes (bits): 20 16
    AC-3:
      Max channels: 6
      Supported sample rates (kHz): 48 44.1 32
      Maximum bit rate: 640 kb/s
    DTS:
      Max channels: 7
      Supported sample rates (kHz): 96 88.2 48 44.1 32
      Maximum bit rate: 1536 kb/s
    Enhanced AC-3 (DD+):
      Max channels: 8
      Supported sample rates (kHz): 88.2 48 44.1 32
    DTS-HD:
      Max channels: 8
      Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1 32
      Audio Format Code dependent value: 0x01
    MAT (MLP):
      Max channels: 8
      Supported sample rates (kHz): 192 176.4 96 88.2 48 44.1 32
      Supports only Dolby TrueHD
  Video Data Block:
    VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (native)
    VIC   5:  1920x1080i  60.000000 Hz  16:9     33.750 kHz     74.250000 MHz
    VIC   4:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
    VIC   3:   720x480    59.940060 Hz  16:9     31.469 kHz     27.000000 MHz
    VIC   1:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 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  20:  1920x1080i  50.000000 Hz  16:9     28.125 kHz     74.250000 MHz
    VIC  22:  1440x576i   50.000000 Hz  16:9     15.625 kHz     27.000000 MHz
    VIC   7:  1440x480i   59.940060 Hz  16:9     15.734 kHz     27.000000 MHz
    VIC  31:  1920x1080   50.000000 Hz  16:9     56.250 kHz    148.500000 MHz
    VIC  32:  1920x1080   24.000000 Hz  16:9     27.000 kHz     74.250000 MHz
    VIC  34:  1920x1080   30.000000 Hz  16:9     33.750 kHz     74.250000 MHz
    VIC   2:   720x480    59.940060 Hz   4:3     31.469 kHz     27.000000 MHz
    VIC   6:  1440x480i   59.940060 Hz   4:3     15.734 kHz     27.000000 MHz
    VIC  17:   720x576    50.000000 Hz   4:3     31.250 kHz     27.000000 MHz
    VIC  21:  1440x576i   50.000000 Hz   4:3     15.625 kHz     27.000000 MHz
    VIC  33:  1920x1080   25.000000 Hz  16:9     28.125 kHz     74.250000 MHz
  Speaker Allocation Data Block:
    FL/FR - Front Left/Right
    LFE1 - Low Frequency Effects 1
    FC - Front Center
    BL/BR - Back Left/Right
    BC - Back Center
    FLc/FRc - Front Left/Right of Center
    RLC/RRC - Rear Left/Right of Center (Deprecated)
  Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
    Source physical address: 1.2.0.0
    Supports_AI
    Maximum TMDS clock: 150 MHz
    Video latency: 123 ms
    Audio latency: 123 ms
    Interlaced video latency: 123 ms
    Interlaced audio latency: 123 ms
    Extended HDMI video details:
      3D present
      3D-capable-VIC mask present
      3D VIC indices that support these capabilities:
  Video Capability Data Block:
    YCbCr quantization: No Data
    RGB quantization: Selectable (via AVI Q)
    PT scan behavior: Supports both over- and underscan
    IT scan behavior: Supports both over- and underscan
    CE scan behavior: Supports both over- and underscan
Checksum: 0xac

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

Preferred Video Timing if only Block 0 is parsed:
  DTD   1:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (708 mm x 398 mm)
                 Hfront   88 Hsync  44 Hback  148 Hpol P
                 Vfront    4 Vsync   5 Vback   36 Vpol P

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

Preferred Video Timings if Block 0 and CTA-861 Blocks are parsed:
  DTD   1:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (708 mm x 398 mm)
                 Hfront   88 Hsync  44 Hback  148 Hpol P
                 Vfront    4 Vsync   5 Vback   36 Vpol P
  VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (native)
                 Hfront   88 Hsync  44 Hback  148 Hpol P
                 Vfront    4 Vsync   5 Vback   36 Vpol P

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

Native Video Resolution:
  1920x1080

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

edid-decode SHA: 84ddf9155376 2021-10-03 10:37:45

Warnings:

Block 1, CTA-861 Extension Block:
  IT Video Formats are overscanned by default, but normally this should be underscanned.
  Vendor-Specific Data Block (HDMI), OUI 00-0C-03: Progressive and Interlaced latency values are identical, no need for both.
  Video Capability Data Block: Set Selectable YCbCr Quantization to avoid interop issues.
  Video Capability Data Block: S_PT is equal to S_IT and S_CE, so should be set to 0 instead.
EDID:
  CTA-861: Multiple native progressive timings are defined.

Failures:

Block 0, Base EDID:
  Vendor & Product Identification: EDID 1.3 does not support week 0xff.
  Detailed Timing Descriptor #1: Mismatch of image size 708x398 mm vs display size 1150x650 mm.
  Empty Descriptor: Use Dummy Descriptor instead of all zeroes.

EDID conformity: FAIL

QT-Pro · 13 August 2026 11:57

It is a 4K projector.
See https://us.xgimi.com/pages/horizon-ultra

Portisch · 13 August 2026 12:01

CE box is directly connected to projector?
If not try again with direct connection.
Maybe it’s your soundbar.

Or you got a fake projector with maximum up to 1080p, no HDR.

QT-Pro · 13 August 2026 12:13

Connected direct to the projector. No soundbar.
It’s not a fake projector. I bought it direct from XGIMI.
CoreELEC is set to 1080p because no higher settings were proposed.
XGIMI support said that even if CoreELEC sends the signal as 1080p, the projector will upscale it to 4K, but I note the projector says DV settings are only available for DV content, even when passing a video specified as Dolby Vision through it.
The point is, my DV content goes through the AM6B+ before being passed onto the projector. Perhaps the 1080p setting is the cause of DV settings being unavailable on the projector? After all, unless I am mistaken, upscaling is not the same as true 4K.

Portisch · 13 August 2026 12:22

The EDID shows something other: Display Product Name: 'BOSE LS'

EDID says the opposite, max 1080p, no HDR.

We can’t help you any further. You can get a DV capable TV and compare your system.
If DV is than working return the projector.

QT-Pro · 13 August 2026 12:31

I am not going to buy a TV to test this with.
I tried through the Bose system and then direct to the projector. The result was the same.
I know you don’t want to help me any more, but do you think the HDMI cable may be the cause? I ask because it is 10 metres long and not a powered version.

The only thing that bothers me is that the AM6 feeds into the amp or the projector and in either case, CoreELEC and Kodi on the AM6 will not offer higher than 1080p. I would have thought that it would be possible to select 2160p even if the amp or projector downscaled it. Is the dovi.ko file I am using the correct one? Remember, I had doubts about that as I copy/pasted it to CoreELEC root via Windows.

vortex · 13 August 2026 12:36

Block 0, Base EDID:

EDID Structure Version & Revision: 1.3

Vendor & Product Identification:

Manufacturer: BSE

Bose System Electronics!!!

QT-Pro · 13 August 2026 12:37

Allow me to double check that. It looks like I may have connected the wrong cable to the AM6.
One other question: I had the Bose system with my previous AM6 Plus and that did not have 4K functionality so the cable used between the AM6 and the Bose was HDMI 1.4. I am still using that cable. I thought that HDMI 1.4 would still transmit 4K although at only 30 MHz. Do I need to change that cable as well?

MauriceW67 · 13 August 2026 12:38

That could definitely be an issue. Maybe you can test with a shorter cable by temporarily moving the box closer to the projector? Also, check if the projector has any settings for the HDMI ports to enable higher bandwidth (often called Ultra or something similar).

If a shorter cable works, you might consider buying an optical HDMI cable.

QT-Pro · 13 August 2026 12:51

Debug log at: https://paste.coreelec.org/TaintedMenace
It was a cable issue. In summary, first I need to upgrade my HDMI cables to optical. If that doesn’t solve the problem, the Bose system will have to go, although Bose claim it is 4K compatible but limited to 30 Mhz output.

MauriceW67 · 13 August 2026 13:00

Be careful which cable you buy. I’ve tried some questionable optical HDMI cables from AliExpress in the past and they didn’t work well for my purpose (4K 120 Hz gaming from my desktop PC to my OLED TV). In the end I bought a (very expensive) Rupro cable which has worked fine ever since.