2019 MacBook Pro Touch Bar flickers after waking from sleep

A flickering Touch Bar on a 2019 MacBook Pro after waking from sleep often points to software glitches or hardware issues, fixable by resetting SMC/NVRAM, restarting Touch Bar processes via Terminal, updating macOS, or adjusting Control Strip settings, but if it persists, it may indicate a hardware fault like a loose cable or failing OLED requiring Apple Support. 

Software & System Resets (Try First)

1. Restart Touch Bar Processes: Open Terminal and run sudo pkill "TouchBarServer"; kill all "ControlStrip" to restart the management apps.
2. Reset SMC (System Management Controller): Shut down your Mac, then press and hold Shift + Control + Option + Power button for about 10 seconds, then release and start normally.
3. Reset NVRAM/PRAM: Shut down, turn on, and immediately hold Option + Command + P + R for about 20 seconds.
4. Check Control Strip Settings: In System Settings/Preferences, customize the Control Strip to remove Quick Actions or apps that might be causing conflicts.
5. Update macOS: Ensure your system is running the latest version of macOS. 

Potential Hardware Fixes (If Software Fails)

• Heat Fix (Temporary): Some users find warming the Touch Bar (e.g., using a hairdryer briefly) can temporarily stop flickering, suggesting a connection issue, .
• Boot in Safe Mode: Starting in Safe Mode can clear caches and rule out software conflicts. 

When to Contact Apple Support

• If resets and software tweaks don't work, the issue is likely a hardware fault (loose connector, failing display).
• Contact Apple Support for diagnosis and potential repair, as it's a known problem on the 2019 models.

Rollieo wrote:

Touchbar flickering on 2019 MBP, this happens mostly when waking up from sleep.

The cure for me was removing the dimmer icon from the Touch Bar...

Go to settings / Keyboard / Touch Bar settings / Customize Control Strip...

Good computing Rollieo ! Appreciate your post here.