To everybody who has been affected by this problem: Attached is a kernel patch which (I hope) will solve the whole matter once and for all. The patch was written for a 3.1 kernel, but it should apply with only minimal changes to other recent kernels. It will affect the way the system handles OHCI controllers -- even systems that are working okay now.
Since different types of NVIDIA controllers and chipsets behave in different ways, I'd like to get as much testing over as wide a range of hardware as possible before submitting this for the official kernel. Please test the patch and let me know if there are any problems with it. Two particular things to look out for: Are USB devices powered down properly when the system shuts down? Does the controller continue to work after you do "rmmod ohci-hcd ; modprobe ohci-hcd"? Thanks. ** Attachment added: "Reset and suspend all idle OHCI controllers; remove NVIDIA shutdown quirk" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/42149/+attachment/2588553/+files/ohci-idle-suspend -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/42149 Title: USB devices are not powered off at shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/42149/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
