I connected my mid-2009 MacBook Pro to my HDMI TV until recently by selecting it as a monitor screen in System Preferences' Display Arrangement tab. When the connection failed, I was no longer able to get the Arrangement tab. Acting on advice to zap the PRAM. I found I had to do so several times to bring back the Arrangement tab and re-establish the connection which has now failed once more. Despite zapping the PRAM repeatedly, I can no longer get the Arrangement tab. Any help would be much appreciated.
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How to get Display Arrangement tab
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One shouldn't reset the PRAM very often. I'm not sure of the technical reason but I do recall that from training several years ago.
Have you tried pressing Command+F1, the shortcut to switch from mirrored to extended desktop? Typically thats the first thing I try when troubleshooting external display connections. Beyond that I'll power cycle the external display, disconnect/reconnect it and possibly power cycle the Mac. You might also attempt an SMC reset.
Resetting the System Management Controller - HT3964
Have you tried pressing Command+F1, the shortcut to switch from mirrored to extended desktop? Typically thats the first thing I try when troubleshooting external display connections. Beyond that I'll power cycle the external display, disconnect/reconnect it and possibly power cycle the Mac. You might also attempt an SMC reset.
Resetting the System Management Controller - HT3964
How to get Display Arrangement tab
Thanks for all the suggestions. I tried the Cmd+F1 and other function keys, the SMC reset and power recycling all without success.
QUOTE=Mr Rabbit;17794821]One shouldn't reset the PRAM very often. I'm not sure of the technical reason but I do recall that from training several years ago.
Have you tried pressing Command+F1, the shortcut to switch from mirrored to extended desktop? Typically thats the first thing I try when troubleshooting external display connections. Beyond that I'll power cycle the external display, disconnect/reconnect it and possibly power cycle the Mac. You might also attempt an SMC reset.
Resetting the System Management Controller - HT3964[/QUOTE]
Thanks for all the suggestions. I tried the Cmd+F1 and other function keys, the SMC reset and power recycling all without success.
QUOTE=Mr Rabbit;17794821]One shouldn't reset the PRAM very often. I'm not sure of the technical reason but I do recall that from training several years ago.
Have you tried pressing Command+F1, the shortcut to switch from mirrored to extended desktop? Typically thats the first thing I try when troubleshooting external display connections. Beyond that I'll power cycle the external display, disconnect/reconnect it and possibly power cycle the Mac. You might also attempt an SMC reset.
Resetting the System Management Controller - HT3964[/QUOTE]