I have this issue too on a Thinkpad X200. I had Maverick 64-bit installed from Oct-2010 without issue, but I did a fresh install the other day and have been having the issue ever since. Both were 64-bit Maverick. Using current kernel (Linux x200 2.6.35-28-generic #49-Ubuntu SMP).
Contrary to others, no swap is being used and only an average 800 MB of RAM is being used (I have 4 GB total) when this happens. Initially I thought it had to do with CPU frequency scaling, but forcing the cores to run at max speed doesn't change anything. Also, when the issue is not occurring and I force the CPU cores to run at min speed (800 MHz), it's still much faster than when in this post-suspend slow state. top shows nothing out of the ordinary - no run-away processes or the like. Nothing noteworthy in syslog. But the cores are completely maxed out at the smallest effort - running gmail in Firefox for example. I'm wondering if this is the same issue: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/371212 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/236275 Title: System very slow after suspend-to-ram -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs