MacOS Sierra on macbook pro 2015 15'' retina

After upgrading to Sierra the font looks blurry and I tweaked AppleFontSmoothing and font looks very thin, then I googled for a solution

defaults write -g CGFontRenderingFontSmoothingDisabled -bool NO

and ticked 'Use LCD font smoothing' option in system settings, now everything looks normal again except the font of login menu:

before login

after login

as shown in pics the menu bar font looks thin before login but normal after login.

I've tried method in

All pages in Google Chrome are rendered with a very thin, bad looking serif font

but no luck, hope anyone could help thanks!

  • What version of macOS Sierra are you running? Have you updated all the way up to 10.12.6?
    – Monomeeth
    Commented Jun 9, 2019 at 8:18
  • @Monomeeth yes it's 10.12.6
    – mzoz
    Commented Jun 9, 2019 at 13:23

1 Answer 1


The issue is you're modifying two different global settings: AppleFontSmoothing and CGFontRenderingFontSmoothingDisabled.

AppleFontSmoothing is an integer, represented from 0-4, whereas CGFontRenderingFontSmoothingDisabled is boolean. I'd recommend starting by deleting both, both as your user and globally (sudo) defaults delete -g AppleFontSmoothing; same with CGFontRenderingFontSmoothingDisabled.

The Menu Bar's process is called SystemUIServer. So you can restart the Menu Bar (see what your tweaks do) with killall SystemUIServer.

  • Thanks for your advice unfortunately it doesn't work, when I try to delete them it shows defaults[39882:9257612] Domain (kCFPreferencesAnyApplication) not found. Defaults have not been changed. and defaults[39889:9257821] Domain (kCFPreferencesAnyApplication) not found. Defaults have not been changed. anyway I'll leave it as it is.
    – mzoz
    Commented Jun 14, 2019 at 14:26

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