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Discussion in 'MacBook Pro' started by Lightnin Rick, Apr 16, 2017.
Hey all My MacBook Pro works fine until i open mail and it freezes with wide black horizontal lines.
Did I miss something? No responses?
Is it only when you open Mail? When did it start happening, relative to software updates?
A few days before the last sierra update. I am only using about half of the SS HD too
Does it always happen when you open Mail?
How many times has it happened?
yes it only happens when I open mail.
If it reliably happens only when you open Mail, it may help to back up your SSD and do a clean install of the OS. Either something is corrupted, which would hopefully be fixed with a clean install, or you have a conflict with some other program, which would be discovered if you don't immediately add back unusual software you may be running. It doesn't seem likely to be a hardware issue of only Mail triggers it, assuming you're also running other normal stuff.
It's possible that Sierra isn't working as well on older machines too, in which case moving back to an older OS might work. But you're the only one I've seen with this particular complaint.