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<font size="+1">I have installed ubuntu 18.04, it was working fine
for a day, but now when I start up, I log in ok, it appears normal
for about a minute, then rotates 90 degrees left, making it nearly
impossible to use.<br>
What happened?<br>
HP pavilion laptop - I've been running various distros fine on
this machine for a couple of years, I don't know how to get it to
stay horizontal. What can I do?<br>
-cd<br>
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