I'm on a new 2019 MacBook pro 13”. The TouchID fingerprint sensor is working. But my touch bar has gone completely blank. I tried restarting my MacBook Pro but it did not help.
I've also done a factory reset, SMC, NVRAM/PRAM and an Apple diagnostics, hoping to fix the problem but it did not work.
After re-install macOs, I was able to see touch bar configuration on System Preferences -> Keyboard menu:
I am not able to see touch bar option and it is completely dark black.
I tried resetting the touchbar through the terminal by using the below syntax:
sudo pkill “TouchBarServer”sudo pkill "Touch Bar Agent"sudo pkill ControlStripAgent
I have tried to verify whether they are running by using below command and could not find any process running.
ps -A | grep -i "touch bar agent"ps -A | grep -i "controlstrip”
I can see the control strip and touch bar server is running in activity monitor:
I could see this is a common issues across mac book pro and customer don’t have any proper fix for it.
Best Answer
Your Touch Bar has failed and you need to have it serviced.
This very statement has come up a lot, even here on Ask Different. The touch bar and the fingerprint sensor are two completely different things - a very thin display and a fingerprint sensor - covered by a single pane of glass. It’s a very common misconception to believe that the whole thing must be working because the fingerprint sensor is functional.
Think of the Touch Bar as a display, not unlike the display on an iPhone with the fingerprint sensor (i.e. iPhone 7+). Many times the LCD would malfunction in someway, but you were still able to unlock it with the fingerprint reader. The same thing is happening here.
You’ve done all the proper steps to diagnose it, but unfortunately, you’ve arrived at the only conclusion left - it’s dead.