Problem description:
Connected to a Sharp 8TC60DWTX (8K) display, but unable to select 4K resolution
Setup Condition
Apple MacBook Pro 16-inch M4 Max
Sharp 8TC60DWTX (8K)
3.Duplicate Procedure
After connecting to 8K MNT and select 4K solution, it still display as 8K.
Vendor analysis:
8K60 shows no image; switching to 30 Hz works normally
→ After analysis, we found that the 8K60 timing output from the MacBook is incorrect.
The horizontal blanking (H-CBlanking) is too small to accommodate the audio data, so the RTD2191E does not output video to the monitor.
→ This issue does not occur on Windows platforms, confirming that this is a host-side issue.
Topic:
Community
SubTopic:
Apple Developers