Hi, having the same issue as others on here with CAC-1010 and occasional fuzzy screen at 1440p.
Wondered if support could please send me the other firmware to try out. I’ve emailed support, twice, and no response in 5 days now.
Thanks!
CAC-1010 fuzzy screen issues
Updated on 08-03-2025 in
Adapters and Cables
To be clear, your issue is like that which is pictured at
https://insights.club-3d.com/thread/flickering-problem-with-cac-1510-a-and-apple-cinema-display-30-on-mac-mini-m1/
?
I don’t think that’s an issue that can be corrected with firmware.
Club-3d has not acknowledged the issue because they have no way to fix it.
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Oh, ok. I thought fuzzy meant everything was basically usable except for some fuzziness.
I think the snow described in that thread is more like random noise like a TV tuned between channels where nothing is visible. And the snow is coloured – not just black and white – which means all the RGB values are randomized? Like this? https://i.sstatic.net/fpBgo.gif
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Is the snow only in some open windows or all open windows? Which windows? Is It only inside windows that are supposed to contain videos from streaming apps like netflix?
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The snow is translucent so you can sort of see the desktop and windows through the snow?
That’s a complicated effect. I would like to see a photo of that. I suppose the OS has a HDCP requirement that the adapter doesn’t meet so the OS obscures everything with that static/snow.
What display do you have? Did you check the EDID to see if it supports HDCP?
Exactly right.
I’ll see if I can take a photo next time it happens… it usually takes a few hard resets of the adapter to fix the issue (every boot) and at the minute it’s working okay so I’m loathe to make it happen again right now lol.
Not sure about EDID, that’s a new one for me. Screen is a QNIX Q2710LED (first edition) that only has DVI input. 1440p / 60Hz, not overclocked the monitor.
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CRU is a utility that can extract EDID. It is mentioned in https://insights.club-3d.com/thread/cac-1088-support-for-2560×2880-resolution/
Maybe you can post the hex of the EDID here and I can use edid-decode to parse the result.
Since the display is DVI, you might try a passive HDMI to DVI adapter or cable to connect the display if your PC has a HDMI output. Get the EDID for that connection type as well so they can be compared.
Do you remember if you got the HDCP-ON or HDCP-OFF version of the CAC-1010? Maybe try e-mail [email protected] again and specify that you want the latest firmware for both versions.
I purchased the “HDCP ON” version because the other version was for Apple Displays.
Link here : https://www.club-3d.com/en/detail/2479/displayport_to_dual_link_dvi_d_hdcp_on_version_active_adapter_m-f/
Okay, got the utility… I can’t see anything that says EDID though ?
Screenshots below.
Clipboard 1 and 2 are for the QNIX monitor with the snow issue.
Clipboard 3 is for my main monitor – an LG 1440p 144hz, just for reference.
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Sorry. I forgot we were dealing with dual link DVI. Yes, a dual link DVI adapter is required for 1440p60.
However, single link DVI should be sufficient to ensure an EDID that is not modified by the adapter.
Use the Export button to export the EDIDs from CRU for each connection type.
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Post it somewhere and I can decode it using edid-decode from v4l-utils (it’s a Linux open source project which I can compile for macOS).
Or you can convert it to hex and copy the hex bytes to here. the first 8 bytes should be
00FFFFFFFFFFFF00
then I can decode that.
Thanks…. here’s a link to the .bin file
http://www.spaceboy.co.uk/Spaceboy-monitors.bin
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That EDID doesn’t have HDCP info. The extension block is invalid. Is the EDID the same if you use a HDMI connection instead?
Although this forum does have the [ code ] / [ /code ] commands, it doesn’t seem to be able to preserve indenting when pasting text:
edid-decode (hex): 00 ff ff ff ff ff ff 00 23 2f 9b 04 00 00 00 00 28 15 01 04 a5 3c 22 78 2a 6f b1 a7 55 4c 9e 25 0c 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 56 5e 00 a0 a0 a0 29 50 30 20 35 00 55 50 21 00 00 1a 00 00 00 fc 00 44 55 41 4c 2d 44 56 49 0a 20 20 20 20 00 00 00 fc 00 0a 20 20 20 20 20 20 20 20 20 20 20 20 00 00 00 fc 00 0a 20 20 20 20 20 20 20 20 20 20 20 20 01 08 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 7f ---------------- Block 0, Base EDID: EDID Structure Version & Revision: 1.4 Vendor & Product Identification: Manufacturer: HYO Model: 1179 Made in: week 40 of 2011 Basic Display Parameters & Features: Digital display Bits per primary color channel: 8 DisplayPort interface Maximum image size: 60 cm x 34 cm Gamma: 2.20 DPMS levels: Off Supported color formats: RGB 4:4:4, YCrCb 4:4:4 First detailed timing includes the native pixel format and preferred refresh rate Color Characteristics: Red : 0.6533, 0.3339 Green: 0.2998, 0.6201 Blue : 0.1464, 0.0498 White: 0.3125, 0.3291 Established Timings I & II: none Standard Timings: none Detailed Timing Descriptors: DTD 1: 2560x1440 59.950550 Hz 16:9 88.787 kHz 241.500000 MHz (597 mm x 336 mm) Hfront 48 Hsync 32 Hback 80 Hpol P Vfront 3 Vsync 5 Vback 33 Vpol N Display Product Name: 'DUAL-DVI' FAIL: Empty string. Display Product Name: '' FAIL: Empty string. Display Product Name: '' Extension blocks: 1 Checksum: 0x08 ---------------- Block 1, Manufacturer-Specific Extension Block: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff '................' ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff '................' ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff '................' ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff '................' ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff '................' ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff '................' ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff '................' ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 7f '................' FAIL: Unknown Extension Block. Checksum: 0x7f ---------------- Failures: Block 0, Base EDID: Display Product Name: Empty string. Display Product Name: Empty string. Block 1, Manufacturer-Specific Extension Block: Unknown Extension Block. EDID conformity: FAIL
That EDID doesn’t have HDCP info. The extension block is invalid. Is the EDID the same if you use a HDMI connection instead?
I can’t use HDMI – monitor only has DVI 😉
As for the rest of it, I’ve no idea what to do with that information… what does it mean if there is no HDCP info ?
DVI is basically HDMI. Just need a passive HDMI to DVI adapter or cable. HDMI is single link so it will be limited to 1920×1200 or less.
No HDCP info means the EDID does not specify whether HDCP is supported or not. This info if it exists would be in the extension block. Your extension block is all 0xFF bytes which is not valid.
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How does HDCP OFF change the behavior?
I guess fuzzy happens when the display is assumed to be HDCP but doesn’t handle HDCP?
If it’s HDCP OFF, then it means Netflix won’t play videos on that display, but at least it won’t do fuzzy?
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