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Acer chromebook 14 (cb3-431) HDMI doesn't work with any Chrome OS greater than version 68

lmcadamslmcadams Posts: 2Member New User
We have had a number of these devices that will no longer recognize when an HDMI cable is plugged in for projectors or monitors.  Has anyone else had this issue?  I have frozen updates on these devices at 68.  I have wiped these devices multiple times and tried Chrome OS versions up through 72 and the problem persists.  I don't know what else to try.  Any help would be appreciated.  

FAQ & Answers

  • thamahes2018thamahes2018 Posts: 175Member Skilled Fixer
    HI lmcadams, Please try connecting HDMI using developer mode in the chrome OS.
  • lmcadamslmcadams Posts: 2Member New User
    I un-enrolled the chromebook and enabled developer mode, the HDMI still does not recognize the second monitor or projector.  Are there any debugging commands I can try?  I ran the memory and storage test and everything was fine.
  • jack7jack7 Posts: 2Member New User
    What is developer mode. I have an Acer chromebook CB3-431 and the HDMI has been dropping the picture every 10 min. I have a new HDMI and it still happens. i have to restart it to get the picture, but it only last a few minutes then no picture.What should I do?
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