Hi, Josh Triplett <josh@xxxxxxxxxxxxxxxx> writes: > I have a USB Lenovo ThinkPad Keyboard with TrackPoint (vendor:product > 17ef:6009), and a ThinkPad Yoga 12 (Broadwell version) with OneLink Pro > dock. If I plug the keyboard/mouse directly into the laptop, > it works fine. If I plug it into the dock, the keyboard works fine; > however, the mouse works for a fraction of a second and then stops > working. (Both the TrackPoint and its mouse buttons do not work through > the dock.) > > The dock shows up as four of: > 2109:0812 VIA Labs, Inc. VL812 Hub this dock probably doesn't like autosuspend. Can you disable autosuspend for it and see if it sorts it out ? > At first, I wondered if USB autosuspend might have something to do with > this. However, I confirmed that the keyboard/mouse itself didn't have > autosuspend turned on in the first place, and while the hubs did, > turning off autosuspend for *all* USB devices did not fix the problem. > > Looking at the sysfs path for the input device as shown in dmesg, > /sys/devices/pci0000\:00/0000\:00\:14.0/usb2/2-3/2-3.1/2-3.1.2/2-3.1.2\:1.1/supports_autosuspend > did say "1". However, the device didn't actually appear to have > autosuspend *enabled*. > > I'd appreciate any suggestions for how to debug this issue. what does 'control' on the power directory show ? -- balbi
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