2017款15寸MBP（High Sierra 10.13.3）Touch Bar音量按键失效求助

Hey there, let’s tackle this frustrating Touch Bar volume button issue you’re dealing with. Since you’ve already worked through all the standard fixes—resetting NVRAM/SMC, restarting coreaudiod and Control Strip, adjusting Touch Bar controls—we’ll dive into some more targeted, less common steps that might get those buttons working again.

• Verify and update Touch Bar firmware
  macOS High Sierra 10.13.3 included specific Touch Bar firmware patches, but sometimes these don’t install smoothly in regular updates. To check your firmware version:

  1. Open About This Mac > click System Report
  2. Navigate to Hardware > Touch Bar and look for the firmware entry
     If it’s outdated, grab the macOS 10.13.3 combo updater (from Apple’s official support resources) and run it—this can force a firmware refresh that standard updates might miss.

• Reset Touch Bar preference files via Terminal
  Corrupted preference plists often cause selective Touch Bar button failures. Open Terminal and run these commands one at a time:

  defaults delete com.apple.touchbar.agent
  defaults delete com.apple.controlstrip
  killall ControlStrip
  killall TouchBarAgent
  

  After running these, restart your Mac and test the volume buttons again. This wipes out any misconfigured Touch Bar settings that might be blocking the buttons.

• Test in a fresh user account
  Create a new admin user (System Preferences > Users & Groups > +), log into it, and check if the Touch Bar volume buttons work. If they do, the problem is tied to your main user’s cached files or preferences. You can either migrate your data to the new account or dig into the old account’s Library/Caches folder to clear audio/Touch Bar related caches.

• Reinstall macOS High Sierra (without erasing data)
  If all else fails, a non-destructive OS reinstall can fix corrupted system files that might be interfering with the Touch Bar’s button functionality. Boot into Recovery Mode (hold Command + R on startup), select Reinstall macOS, and follow the prompts—this keeps all your data intact but replaces core system files. Just make sure to back up your data first as a precaution.

These steps focus on firmware integrity, preference corruption, user-specific issues, and system file health—areas that are frequent culprits for this exact Touch Bar problem on your model and OS version.

内容的提问来源于stack exchange，提问作者Cobra Kai Dojo