We have the described problem with several of our machines in the lab. However, some of the machines (identical in hardware to those freezing) did not have the freezing issue.
Installing the 3.3.x kernel did not help at all. So, we've started analysing what might be the cause of the problem. At the beginning everything was suggesting that if the RAM was fully loaded and there was an intensive use of the swap the machine would freeze. This was a repeatable experiment, but only for the machines that were freezing in the first place. The only obvious difference in software on those machines was the user of Chromium on those that freezed and Firefox on those that did not. The memory stress tests we've performed where using Chromium with multiple tabs (each tab process consuming ~50Mb). Once we repeated the tests without Chromium and using Firefox instead no freezing occurred! In order to further pinpoint the issue we've used one of our JavaFX applications that utilises WebKit for working with Google Maps and the freezing manifested again. Thus, all our tests point to the cause of the freezing to be related to WebKit engine. Hope this information is useful and someone would be able to repeat the experiments in other settings to confirm the result. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996989 Title: Ubuntu 12.04 Freezes Frequently To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/996989/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
