Linked by Thom Holwerda on Thu 26th Apr 2012 20:58 UTC, submitted by anonymous
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Member since:
2006-08-15
Tom UK
Try upgrading your kernel to the latest 3.3.x.
A lot of ACPI patches went to Linux 3.3 and it fixed some ACPI issues I had with my Lenovo ThinkPad T510. I've seen also that some other users reported success with 3.3 and ACPI on their ThinkPad laptops.
http://www.phoronix.com/scan.php?page=news_item&px=MTA0NDE
https://bugzilla.kernel.org/show_bug.cgi?id=36132
Please upgrade your kernel to the latest 3.3.x, test your suspend/hibernate and report back your results.
The latest kernel on Ubuntu 12.04 is 3.2.0 and this version seems to have some issues with ACPI on ThinkPads. At least from my experience.
Linux 3.3.x fixed all this for me.
Edited 2012-04-27 22:49 UTC