[Tony, Erik]
CDS Laptops have been locking up when the lid was closed then reopened.
There is a fix, but it has to be applied by individual users.
From the "Applications" menu (upper left) go to "Settings" -> "Power Management" -> "System".
Screen shot attached.
With "On Battery" selected, change the Laptop Lid action action to "Suspend", then change the System sleep mode to "Suspend".
Select "Plugged In" and make the same changes.
The laptop will now go into suspend mode when the lid is shut. When you reopen it, the screen will be blank for a bit, but if you press the space bar, it will wake up after several seconds.
Also, you may now use your personal account when logging in to the laptop. The controls user can still be used. The settings described above are per-user. If you make the changes as controls, that won't affect your personal account.
If you use the controls user, you may want to check these settings each time you logged in since somebody else may have changed them.