Public bug reported:
Binary package hint: acpi-support
This bug is very similar to bug 82463, but it also happens on a rather
long lid close/open cycle. This is on a fresh Feisty Herd 3 install on a
Dell Latitude X1. This is also a regression to Dapper, which reliably
switched on the display after re-opening the lid (but also switched it
when moving the mouse while the lid remained closed).
In order to get the display back, I had to switch to a text console,
then back to X (Alt-F7).
** Affects: acpi-support (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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display remains blank after closing and re-opening the lid
https://launchpad.net/bugs/83320
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