Edge2 Doesn't display via HDMI on Ubuntu 24

Edge2
1

Which system do you use? Android, Ubuntu, OOWOW or others?

Ubuntu

Which version of system do you use? Please provide the version of the system here:

Distributor ID: Ubuntu
Description: Ubuntu 24.04 LTS
Release: 24.04
Codename: noble

Please describe your issue below:

Edge2 does not seem to display to HDMI display:

The display itself is known working on my windows device.

If I plug the display into a usb c dock it does display but seemingly not correctly. I’ve tried loading the EDID used in windows but it doesn’t work and seems to fail to load at boot./

2

Does your screen resolution is 1080x1200 ? Maybe this resolution is not supported by default. Could you provide the EDID infomation to us?

edid-decode < /sys/class/drm/card0-HDMI-A-1/edid

@Jacobe please follow up.

3 
edid-decode (hex):

00 ff ff ff ff ff ff 00 33 54 01 00 00 00 00 00
0c 1b 01 03 80 00 00 78 0a 07 f5 9a 56 4e 86 26
1e 50 54 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 bc 39 38 13 41 b0 0c 40 64 05
63 00 5a a0 00 00 00 18 00 00 00 fc 00 33 38 31
20 20 20 20 20 20 20 20 20 20 00 00 00 ff 00 30
30 30 30 30 30 30 30 20 20 20 20 20 00 00 00 fd
00 17 4b 0f f0 1e 00 0a 20 20 20 20 20 20 01 10

02 03 17 74 47 00 00 00 00 00 00 00 23 09 7f 07
66 03 0c 00 30 00 80 bc 39 38 13 41 b0 0c 40 64
05 63 00 5a a0 00 00 00 18 bc 39 38 13 41 b0 0c
40 64 05 63 00 5a a0 00 00 00 18 bc 39 38 13 41
b0 0c 40 64 05 63 00 5a a0 00 00 00 18 bc 39 38
13 41 b0 0c 40 64 05 63 00 5a a0 00 00 00 18 bc
39 38 13 41 b0 0c 40 64 05 63 00 5a a0 00 00 00
18 00 00 00 00 00 00 00 00 00 00 00 00 00 00 8b

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

Block 0, Base EDID:
  EDID Structure Version & Revision: 1.3
  Vendor & Product Identification:
    Manufacturer: LZT
    Model: 1
    Made in: week 12 of 2017
  Basic Display Parameters & Features:
    Digital display
    Image size is variable
    Gamma: 2.20
    RGB color display
    First detailed timing is the preferred timing
  Color Characteristics:
    Red  : 0.6015, 0.3359
    Green: 0.3056, 0.5263
    Blue : 0.1513, 0.1201
    White: 0.3134, 0.3291
  Established Timings I & II: none
  Standard Timings:
  Detailed Timing Descriptors:
    DTD 1:  1080x1200   89.997930 Hz   9:10   109.077 kHz    147.800000 MHz (90 mm x 160 mm)
                 Hfront  100 Hsync   5 Hback  170 Hpol N
                 Vfront    6 Vsync   3 Vback    3 Vpol N
    Display Product Name: '381          '
    Display Product Serial Number: '00000000     '
    Display Range Limits:
      Monitor ranges (GTF): 23-75 Hz V, 15-240 kHz H, max dotclock 300 MHz
  Extension blocks: 1
Checksum: 0x10

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

Block 1, CTA-861 Extension Block:
  Revision: 3
  Basic audio support
  Supports YCbCr 4:4:4
  Supports YCbCr 4:2:2
  Native detailed modes: 4
  Video Data Block:
  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
  Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
    Source physical address: 3.0.0.0
    Supports_AI
  Detailed Timing Descriptors:
    DTD 2:  1080x1200   89.997930 Hz   9:10   109.077 kHz    147.800000 MHz (90 mm x 160 mm)
                 Hfront  100 Hsync   5 Hback  170 Hpol N
                 Vfront    6 Vsync   3 Vback    3 Vpol N
    DTD 3:  1080x1200   89.997930 Hz   9:10   109.077 kHz    147.800000 MHz (90 mm x 160 mm)
                 Hfront  100 Hsync   5 Hback  170 Hpol N
                 Vfront    6 Vsync   3 Vback    3 Vpol N
    DTD 4:  1080x1200   89.997930 Hz   9:10   109.077 kHz    147.800000 MHz (90 mm x 160 mm)
                 Hfront  100 Hsync   5 Hback  170 Hpol N
                 Vfront    6 Vsync   3 Vback    3 Vpol N
    DTD 5:  1080x1200   89.997930 Hz   9:10   109.077 kHz    147.800000 MHz (90 mm x 160 mm)
                 Hfront  100 Hsync   5 Hback  170 Hpol N
                 Vfront    6 Vsync   3 Vback    3 Vpol N
    DTD 6:  1080x1200   89.997930 Hz   9:10   109.077 kHz    147.800000 MHz (90 mm x 160 mm)
                 Hfront  100 Hsync   5 Hback  170 Hpol N
                 Vfront    6 Vsync   3 Vback    3 Vpol N
Checksum: 0x8b

Sorry for the delay its late for me.

Also: managed to get it to display using one of the developer ubuntu installs but all blacks/grays are magenta.

Also it seems its not recognized by things like oowow for example regardless. Would love to hear any ideas.

4

Hello @Jonas_Noll
You can install the test image via OOWOW online.

The upload date of image is 20240822.

Because of I haven’t added this edid to uboot, so if you boot Edge2 with HDMI connected, still crash.

So you can boot first and then connect the HDMI.

5

The display is being recognized with the new image as well which is good but the display is still Magenta where it should be gray/black. Seems all other colors are correct somehow.

If I boot with the HDMI inserted the device boots into a login screen which uses the correct colors but the wrong resolution but when I log in it’s magenta again with the correct resolution.

6

Hello,

Thanks for the help so far. I managed to fix this on my own using this:

Steps to reproduce:
Install wxEDID

sudo apt-get install wxedid

Find the current EDID file:

find /sys/ -name "*HDMI*"

Returns this:

/sys/devices/platform/display-subsystem/drm/card0/card0-HDMI-A-1

copy the EDID to another folder:

cp /sys/devices/platform/display-subsystem/drm/card0/card0-HDMI-A-1/edid ~/edid.bin

open in wxedit and follow the above link:
vsig_format → replace 0b01 wih 0b00
CEA-861 header → change the value of YCbCr420 and YCbCr444 to 0
options → recalc checksum
file → save as whatever you’d like
then create an edid directory in the /lib/firmware folder:

sudo mkdir /lib/firmware/edid

then move your new edid.bin over:

sudo mv <edid.bin> /lib/firmware/edid/edid.bin

now, you need to edit your uboot config,
there’s multiple ways to do this. Khadas recommends in their documentation to adjust /boot/uEnv.txt and add to the boot_user_args but I added it to the end of /boot/extlinux/extlinux.conf instead. Both should work theoretically.

sudo nano /boot/uEnv.txt

add this to the boot args:

drm.edid_firmware=HDMI-A-1:edid/edid.bin

then just

sudo update-initramfs -u

reboot and it should be normal colored.

3 Likes
7

Hello @Jonas_Noll

Thanks for sharing your solutions. :wink:

Cheers.