Public bug reported:
I am using Ubuntu 15.04 with Mainline Kernel 4.2 RC7 on a Lenovo B5400
laptop.
When I plug an USB3 flash drive into either of the USB3 ports, then
remove the flash drive and try to suspend (using the GUI), the computer
will resume automatically from suspend in a second.
The problem is not present when using a USB2 device in USB3 ports or when using
a USB3 device in the USB2 port.
If I do not remove the flash drive from the USB3 port suspend will work as
expected.
I've googled for this bug and found some guides in fixing a similar
problem, but none of them worked.
I'm not _sure_ what package is the cause of this problem, so acpid might
be the wrong choice.
Below is attached /proc/acpi/wakeup as suggested by the
DebuggingKernelSuspend, please tell me if more information or logs are
needed.
** Affects: acpid (Ubuntu)
Importance: Undecided
Status: New
** Tags: suspend usb
** Attachment added: "wakeup"
https://bugs.launchpad.net/bugs/1486581/+attachment/4448671/+files/wakeup
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https://bugs.launchpad.net/bugs/1486581
Title:
Automatic resume from suspend
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