Thanks. That EDID seems to mention stereo audio support. So that's good.
But also I wonder if the DRM property needs tweaking. Please try running
this command:
xrandr --output HDMI-1 --set audio on
If it still doesn't work then try logging in again after that.
------------------------
Full EDID data:
EDID version: 1.3
Manufacturer: HXA Model 0 Serial Number 1
Made in week 38 of 2006
Digital display
Maximum image size: 71 cm x 40 cm
Gamma: 2.50
RGB color display
First detailed timing is preferred timing
Color Characteristics
Red: 0.6396, 0.3447
Green: 0.2910, 0.6347
Blue: 0.1630, 0.0927
White: 0.2880, 0.2958
Established Timings I & II: none
Standard Timings: none
Detailed mode: Clock 148.500 MHz, 708 mm x 398 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, 708 mm x 398 mm
1920 2008 2052 2640 ( 88 44 588)
1080 1084 1089 1125 ( 4 5 36)
+hsync +vsync
VertFreq: 50.000 Hz, HorFreq: 56.250 kHz
Display Product Name: BMD HDMI
Display Range Limits
Monitor ranges (GTF): 50-60 Hz V, 31-68 kHz H, max dotclock 80 MHz
Has 1 extension block
Checksum: 0xf7
----------------
CTA-861 Extension Block Revision 3
Basic audio support
Supports YCbCr 4:2:2
4 native detailed modes
27 bytes of CTA data blocks
Video Data Block
1920x1080i 60.000 Hz 16:9 33.750 kHz 74.250 MHz (VIC 5, native)
1280x720 60.000 Hz 16:9 45.000 kHz 74.250 MHz (VIC 4, native)
1920x1080i 50.000 Hz 16:9 28.125 kHz 74.250 MHz (VIC 20, native)
1280x720 50.000 Hz 16:9 37.500 kHz 74.250 MHz (VIC 19, native)
1920x1080 24.000 Hz 16:9 27.000 kHz 74.250 MHz (VIC 32, native)
1920x1080 25.000 Hz 16:9 28.125 kHz 74.250 MHz (VIC 33, native)
1920x1080 30.000 Hz 16:9 33.750 kHz 74.250 MHz (VIC 34, native)
1920x1080 50.000 Hz 16:9 56.250 kHz 148.500 MHz (VIC 31, native)
1920x1080 60.000 Hz 16:9 67.500 kHz 148.500 MHz (VIC 16, native)
Audio Data Block
Linear PCM, max channels 2
Supported sample rates (kHz): 48
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 3.0.0.0
Maximum TMDS clock: 150 MHz
Detailed mode: Clock 74.250 MHz, 708 mm x 398 mm
1280 1390 1430 1650 (110 40 220)
720 725 730 750 ( 5 5 20)
+hsync +vsync
VertFreq: 60.000 Hz, HorFreq: 45.000 kHz
Detailed mode: Clock 74.250 MHz, 708 mm x 398 mm
1280 1720 1760 1980 (440 40 220)
720 725 730 750 ( 5 5 20)
+hsync +vsync
VertFreq: 50.000 Hz, HorFreq: 37.500 kHz
Checksum: 0xd2
** Package changed: ubuntu => pulseaudio (Ubuntu)
** Summary changed:
- incorrect audio-EDID on HDMI, blocking audio transmission over HDMI
+ HDMI audio not working on Blackmagic Design ATEM Mini Pro ISO (video mixer)
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https://bugs.launchpad.net/bugs/1910537
Title:
HDMI audio not working on Blackmagic Design ATEM Mini Pro ISO (video
mixer)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1910537/+subscriptions
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