Two Thunderbolts, one computer

I have two Thunderbolts, one in the house and one in my workshop. I have one MacAir11. When I am plugged into the Thunderbolt in the house, it works fine, but when plugged into the one in the shop, the thunderbolt is problematic.
In the house, when I close the air cover, the thunderbolt becomes my display which is what I want. In the shop, when I close the lid, the thunderbolt either goes dark or flashes.
Any ideas?

These links should help:
Natalie Beresford: Multiple iPods/iTunes Installations
How to use multiple iPods with one computer
How to share music between different accounts on a single computer

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Two iPods - One computer

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Try the options in this article.
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Two ipods - one computer - Need help

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Terence Delvin,
What's your motivation? You reference my previous statement about it being a big problem.
Yet that post has, interestingly, been deleted. But you still know about it. I can only assume that you work for Apple and you deleted it.
To then suggest that it is my personal problem is rather counter-productive. It is no longer my personal problem b/c I no longer and will never use iTunes 7.0.
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If you intend to continue to deny the problem, then don't bother posting anymore. If you have some inside information on why it happens, after you read the referenced blog (which was erased along with my previous post but which I will re-list), then by all means - post that here, and there as well.
http://www.twistermc.com/blog/2006/09/12/itunes-7-erased-my-ipod
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If a plane SOMETIMES crashes, that's a HUGE problem for the people affected. (I'm using this as metaphor and mean no comparision between the two events)
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Hi Rin,
Instructions from Apple here How to use multiple iPods with one computer
Happy New Year,
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Check this out.
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http://docs.info.apple.com/article.html?artnum=300432
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These links should help:
Natalie Beresford: Multiple iPods/iTunes Installations
How to use multiple iPods with one computer
How to share music between different accounts on a single computer

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http://docs.info.apple.com/article.html?artnum=300432
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http://docs.info.apple.com/article.html?artnum=61675
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http://docs.info.apple.com/article.html?artnum=61148
Managing content manually on iPod and iPhone (alt link)
http://support.apple.com/kb/HT1535?viewlocale=en_US
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Hello and thanks for any help. We got a new computer for Christmas that has two user "accounts" on it. My husband loaded iTunes into "his" side with no problem. I have iTunes, but can't get any of the music to show up on it, even though the computer shows that the files are being shared between the two users. I can add music to it with no issue, but can't access what was already in the library. It seems silly to load all the music in twice, but I will if I have no other option. Any ideas? Thanks.

1 Quit iTunes.
2 Drag your entire iTunes folder from /My Documents/My Music/ to a Shared directory.
3 Log out.
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7 Delete the iTunes folder in /My Documents/My Music/.
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9 Quit iTunes and log out of the account.
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Two Thunderbolts, one computer

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