I upgraded my 2015 top-of-the-line 13" MacBook Air to 10.12 yesterday, and after powering on this morning the external display won't get a signal. It worked after the upgrade yesterday - during which is rebooted and all that jazz it usually does during an upgrade. It's an HP 22cwa.
But today, I fired it up and the external monitor is dead. It's 720p, nothing fancy, and never had any issues before.
It's powered through a Thunderbolt-to-HDMI cable that's worked like a breeze until now.
Any ideas or troubleshooting? Thank you in advance!
EDIT: Maybe it's related to the fact that the Desktop Pref Pane wasn't loading until it rebooted? I dunno...
But today, I fired it up and the external monitor is dead. It's 720p, nothing fancy, and never had any issues before.
It's powered through a Thunderbolt-to-HDMI cable that's worked like a breeze until now.
Any ideas or troubleshooting? Thank you in advance!
EDIT: Maybe it's related to the fact that the Desktop Pref Pane wasn't loading until it rebooted? I dunno...
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