The problem is that usb_storage is still scanning on the built-in SD card slot when tasks are frozen prior to restoring the hibernation image. The task that's doing the scanning is frozen, but khubd is processing a disconnect for the card reader that causes it to try and wait on the frozen task. Thus waiting for khubd to freeze times out, and as a result restoration of the hibernation image is aborted.
The attached patch makes the scanning task non-freezable. This has fixed the issue in light testing. I'm going to put it through a couple hundred S4 iterations now to further verify the fix. ** Patch added: "0001-usb_storage-make-usb-stor-scan-task-non-freezable.patch" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810020/+attachment/2207743/+files/0001-usb_storage-make-usb-stor-scan-task-non-freezable.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/810020 Title: Toshiba NB505: Failure to resume from hibernate To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810020/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
