La Profe S wrote:
WIth IOS8, I believe it was because I had turned the physical knob to MUTE on the iPad. For some reason, the two are connected. Turn mute off and it should work.
They are not connected.
Mute and rotation lock are independent. However, as I said above, they can be controlled by the same side switch, but it depends on what said switch is set to in Settings->General->Use Side Switch For.
I wrote:
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You can change the behavior in Settings->General->Use side switch for
Whatever is not checked there will appear in control center.
The checked option will be controlled by the side Switch above the volume control buttons.
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Of course this only applies to iPads up to the iPad Air. Since the iPad Air 2 did away with the side switch, everything is controlled via the control center on the iPad 2.
Turn on Mute and Orientation Lock on iPad Air 2 - Apple Support