Script that attempts to force M1 macs into RGB mode when used with monitors that are defaulting to YPbPr.

Related tags

Deep Learning fix_m1_rgb
Overview

fix_m1_rgb

Script that attempts to force M1 macs into RGB mode when used with monitors that are defaulting to YPbPr.

No warranty provided for using this script. Use at your own risk.

Instructions

Prerequisites

  1. Make sure you are on Mac OS X 11.4 or higher. Upgrade if you haven't.
  2. Open System Preferences > Displays > Rotate the monitor that's in YPbPr mode in order to force it to write to the relevant plist file. You can unrotate it immediately or allow it to auto-revert.

Running the Script

From your Terminal, run:

# Download the script
curl -o ~/Downloads/fix_m1_rgb.py https://raw.githubusercontent.com/sudowork/fix_m1_rgb/main/fix_m1_rgb.py
# Run a dry run and validate the results
python3 ~/Downloads/fix_m1_rgb.py --dry-run
# Once the results are validated, apply the changes.
# Note: You may be prompted for your password in order to backup and modify files under /Library.
python3 ~/Downloads/fix_m1_rgb.py

Restart your computer after you're done, and if all worked out well, then your monitor should be in RGB mode.

Note: The script will backup your original plist files. In addition, the script does not try to discriminate between various displays, so it will write the PixelEncoding and Range values for all displays with a LinkDescription field.

Kudos

Kudos to @GetVladimir for identifying the plist changes that need to be made.

Comments
  • Errors: PixelEncoding and Range not as expected / No LinkDescription found in display config

    Errors: PixelEncoding and Range not as expected / No LinkDescription found in display config

    On a Macbook Pro M1 running Big Sur 11.4 The dryrun is giving errors. I edited plist with a binary editor and there is definitely a LinkDescription in there so I'm not sure what's going on?

    `

    [2021-07-15 15:26:03 INFO] Found /Library/Preferences/com.apple.windowserver.displays.plist. [2021-07-15 15:26:03 INFO] Backing up file /Library/Preferences/com.apple.windowserver.displays.plist -> /Library/Preferences/com.apple.windowserver.displays.plist.bak.1626377163 [2021-07-15 15:26:03 INFO] Fixing /Library/Preferences/com.apple.windowserver.displays.plist [2021-07-15 15:26:03 INFO] Fixing config for Display 37D8832A-2D66-02CA-B9F7-8F30A301B230 [2021-07-15 15:26:03 INFO] Did not fix Display 37D8832A-2D66-02CA-B9F7-8F30A301B230. Values for PixelEncoding and Range not as expected. [2021-07-15 15:26:03 INFO] Fixing config for Display 6521F0F7-E764-6900-0857-D6964E3302DB [2021-07-15 15:26:03 INFO] Fixed Display 6521F0F7-E764-6900-0857-D6964E3302DB [2021-07-15 15:26:03 INFO] Resulting XML output for /Library/Preferences/com.apple.windowserver.displays.plist:

    ....

    [2021-07-15 15:26:03 INFO] Writing output to /Library/Preferences/com.apple.windowserver.displays.plist [2021-07-15 15:26:03 INFO] Found /Users/paulmorris/Library/Preferences/ByHost/com.apple.windowserver.displays.03D04E29-7EB8-5025-A535-ACC0370EB337.plist. [2021-07-15 15:26:03 INFO] Backing up file /Users/paulmorris/Library/Preferences/ByHost/com.apple.windowserver.displays.03D04E29-7EB8-5025-A535-ACC0370EB337.plist -> /Users/paulmorris/Library/Preferences/ByHost/com.apple.windowserver.displays.03D04E29-7EB8-5025-A535-ACC0370EB337.plist.bak.1626377163 [2021-07-15 15:26:03 INFO] Fixing /Users/paulmorris/Library/Preferences/ByHost/com.apple.windowserver.displays.03D04E29-7EB8-5025-A535-ACC0370EB337.plist [2021-07-15 15:26:03 INFO] Skipping /Users/paulmorris/Library/Preferences/ByHost/com.apple.windowserver.displays.03D04E29-7EB8-5025-A535-ACC0370EB337.plist. No LinkDescription found in display config. Try rotating your display from Display settings to generate the field in the plist.`

    opened by Paul-Morris 10
  • No `LinkDescription` found in display config. Try rotating your display from Display settings to generate the field in the plist.

    No `LinkDescription` found in display config. Try rotating your display from Display settings to generate the field in the plist.

    Thank you for your work! Unfortunately, it does not seem to work in my setting, I get a

    No LinkDescription found in display config. Try rotating your display from Display settings to generate the field in the plist.

    In my case, I'm connecting an M1 MacBook Pro via USB-C to a CableMatters USB-C to Display Port Hub to a Dell U2711 on 11.4. Tried multiple times and yes, display was rotated.

    opened by Je-Ho 4
  • Add support for macOS Monterey

    Add support for macOS Monterey

    Yes, I know it's only just been made available to developers, but at this point the script just says 'OS not supported' so I can't even try to see if it works. I actually upgraded to the beta to see if it might fix this issue once and for all. Not yet.

    opened by AmpCat 4
  • Back up and delete `com.apple.windowserver*` plist files in other directories

    Back up and delete `com.apple.windowserver*` plist files in other directories

    From my comment here, this script did not work for me until I manually deleted the display plist in ~/Library/Preferences/ByHost.

    Is this something that you feel should be added to the script?

    opened by jamescmartinez 2
  • Monterey =(

    Monterey =(

    This script worked perfectly the first time I ran it long ago.

    I upgraded to Monterey and recently verified the monitor was still RGB and it was not. I re-ran the script, restarted, and it was still in YPbPr.

    I ended up switching to a thunderbolt port on the mac and USB-C input on the monitor and now I'm back in RGB.

    opened by idontusenumbers 1
  • Error: No LinkDescription found in display config. Try rotating your display from Display settings to generate the field in the plist.

    Error: No LinkDescription found in display config. Try rotating your display from Display settings to generate the field in the plist.

    @sudowork thank you for this lovely attempt.

    Unfortunately, it seems this issue persists.

    MacOC 12.0.1 M1 Pro 14" Display DELL S2721Q

    I've rotated the monitor, run code in the terminal, restart, and the monitor stays in YPbPr, with the only RGB option showing the magenta wash as others have described.

    The script results follow, showing the same error as above:

    [USER REDACT] ~ % python3 ~/Downloads/fix_m1_rgb.py [2021-12-22 17:24:04 WARNING] This script has not fully been tested on OS X 12 Monterey. Do you want to continue? [yN] y [2021-12-22 17:24:29 INFO] Looking for preferences in: /Library/Preferences/com.apple.windowserver.displays.plist /Users/hal-9001/Library/Preferences/com.apple.windowserver.displays.plist [2021-12-22 17:24:29 INFO] Found /Library/Preferences/com.apple.windowserver.displays.plist. [2021-12-22 17:24:29 INFO] Backing up file /Library/Preferences/com.apple.windowserver.displays.plist -> /Library/Preferences/com.apple.windowserver.displays.plist.bak.1640211869 Password: /Library/Preferences/com.apple.windowserver.displays.plist -> /Library/Preferences/com.apple.windowserver.displays.plist.bak.1640211869 [2021-12-22 17:24:39 INFO] Fixing /Library/Preferences/com.apple.windowserver.displays.plist [2021-12-22 17:24:39 INFO] Skipping /Library/Preferences/com.apple.windowserver.displays.plist. No LinkDescription found in display config. Try rotating your display from Display settings to generate the field in the plist. [2021-12-22 17:24:39 INFO] Found ByHost preferences at /Users/hal-9001/Library/Preferences/ByHost/com.apple.windowserver.displays.6A723102-96D2-556B-8BBC-361AD165BF52.plist - removing [2021-12-22 17:24:39 INFO] Backing up file /Users/hal-9001/Library/Preferences/ByHost/com.apple.windowserver.displays.6A723102-96D2-556B-8BBC-361AD165BF52.plist -> /Users/hal-9001/Library/Preferences/ByHost/com.apple.windowserver.displays.6A723102-96D2-556B-8BBC-361AD165BF52.plist.bak.1640211879 /Users/hal-9001/Library/Preferences/ByHost/com.apple.windowserver.displays.6A723102-96D2-556B-8BBC-361AD165BF52.plist -> /Users/hal-9001/Library/Preferences/ByHost/com.apple.windowserver.displays.6A723102-96D2-556B-8BBC-361AD165BF52.plist.bak.1640211879 [2021-12-22 17:24:39 INFO] Removing file /Users/hal-9001/Library/Preferences/ByHost/com.apple.windowserver.displays.6A723102-96D2-556B-8BBC-361AD165BF52.plist /Users/hal-9001/Library/Preferences/ByHost/com.apple.windowserver.displays.6A723102-96D2-556B-8BBC-361AD165BF52.plist

    opened by gryphtl 1
  • [Feature] Add functionality to interactively restore from backups

    [Feature] Add functionality to interactively restore from backups

    Provide a separate command fix_m1_rgb.py restore that creates a curses-based interface for being able to explore backups and restore from them.

    • [ ] Implement separate command for restore
    • [ ] Implement curses interface
    • [ ] Show available backups
    • [ ] Implement basic navigation using curses
    • [ ] Screens
      • [ ] Select file to restore
      • [ ] Show backups for file
      • [ ] Implement display
        • [ ] Scrolling / navigation
        • [ ] Line numbers
      • [ ] Views to display
        • [ ] View XML of a backup
        • [ ] View JSON of a backup
      • [ ] Diff current version vs backup
    • [ ] Restore (first create a new backup, then restore)
    opened by sudowork 0
Owner
Kevin Gao
Kevin Gao
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