I updated my machine with the latest 12.04 updates in the past week, which included some compiz updates (to 0.9.7.8), and the problem is still occurring.
As mentioned by Christoph, around the time of the latest occurrence I got an "irq 16: nobody cared" in syslog: May 16 19:40:51 ntuckett-ubuntu kernel: [20742.749768] irq 16: nobody cared (try booting with the "irqpoll" option) May 16 19:40:51 ntuckett-ubuntu kernel: [20742.749779] <IRQ> [<ffffffff810db37d>] __report_bad_irq+0x3d/0xe0 May 16 19:40:51 ntuckett-ubuntu kernel: [20742.749795] [<ffffffff810d8e69>] handle_irq_event_percpu+0xa9/0x220 May 16 19:40:51 ntuckett-ubuntu kernel: [20742.749799] [<ffffffff810d9031>] handle_irq_event+0x51/0x80 May 16 19:40:51 ntuckett-ubuntu kernel: [20742.749803] [<ffffffff810dc05a>] handle_fasteoi_irq+0x6a/0x110 May 16 19:40:51 ntuckett-ubuntu kernel: [20742.749808] [<ffffffff81015282>] handle_irq+0x22/0x40 May 16 19:40:51 ntuckett-ubuntu kernel: [20742.749883] [<ffffffffa0064370>] irq_handler Unfortunately I was away from my machine at the time, so can't yet confirm if this was a coinciding event. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996008 Title: GUI slows down significantly after random period of time. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/996008/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
