Cannot get capabilities: Maximum DDC retries exceeded.

[SamuelBorn]

System Information:

• ddcutil Version: 2.1.2
• Processor: Intel® Core™ i5-4690K × 4
• Graphics: NVIDIA GeForce GTX 970
• Firmware Version: 2405
• OS Name: Fedora Linux 40 (Workstation Edition)
• GNOME Version: 46
• Windowing System: Wayland
• Kernel Version: Linux 6.9.5-200.fc40.x86_64

Problem Description

One of my monitors is recognized by ddcutil detect but everything else fails.

Is this a problem with my hardware not being supported or a software error?

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Output of ddcutil detect:

Display 1
   I2C bus:  /dev/i2c-3
   DRM connector:           card0-HDMI-A-1
   EDID synopsis:
      Mfg id:               VSC - ViewSonic Corporation
      Model:                VG2433Smh
      Product code:         4911  (0x132f)
      Serial number:        TXC143300082
      Binary serial number: 16843009 (0x01010101)
      Manufacture year:     2014,  Week: 33
   VCP version:         2.2

Display 2
   I2C bus:  /dev/i2c-4
   DRM connector:           card0-DP-1
   EDID synopsis:
      Mfg id:               VSC - ViewSonic Corporation
      Model:                VX2457
      Product code:         47409  (0xb931)
      Serial number:        
      Binary serial number: 16843009 (0x01010101)
      Manufacture year:     2016,  Week: 22
   VCP version:         2.1

Example output of ddcutil -d 2 capabilities (took 24s)

Unable to get capabilities for monitor on Display_Handle[i2c-4: fd=3].  Maximum DDC retries exceeded.