I was having these on an irregular basis until I installed a test kernel based on the upcoming -11 kernel. There is an ACPI flood detection fix for non-interrupt access which looks likely the base of the fix. If those who were seeing this extensively could try the kernel at the URL below and report back:
http://people.ubuntu.com/~apw/webcams1/ -- ACPI: EC: missing confirmations, switch off interrupt mode. https://bugs.launchpad.net/bugs/284263 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs