== SRU Justification == A class of new machines from Lenovo (such as the U300) and some ASUS laptops are hanging on suspend.
== Fix == This patch is already an upstream fix that makes acpi_pm_device_sleep_state() conform to the ACPI specification. == Impact == Machines like Lenovo U300 and some ASUS laptops fail to suspend. The only viable workaround is xHCI bind/unbind hack which is really ugly and can potentially lose data with connected devices. == Test Case == Simply suspend the laptop, without the fix it will just hang on suspend. This has been tested on a Lenovo U300 and also sanity checked on a Lenovo X220i (which didn't have the bug) to check it doesn't cause problems on hardware without this bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/904261 Title: Lenovo U300s does not suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/904261/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
