I've been running Arch on the following laptop since July 2012
I had it successfully hibernating on lid close via systemd up until this past weekend. After updates on 2/24, it would hibernate, but upon resume, the screen would go blank except for a single underscore character in the upper left and freeze there. After running updates on 2/25, the same behavior happens when attempting to hibernate in the first place. The same behavior occurs with suspending as well.
Many of the updates seemed to deal with mesa, could this be an Intel video driver issue? Any help resolving the issue would be appreciated.
Update: Still having this issue several updates later. I've found that my laptop will eventually hibernate, but it spits out the following text after a 30 second or so hang and just before powering off: