> > Observations: > > > > - independent of activity/workload > > Are you sure about that? In your Intel pcap file, the problem occurred > only after long periods of inactivity: 40 seconds the first time, 150 > seconds the second time. Yes, because it can disconnect any time. Last time it managed to disconnect during a file transfer. And also tonight I managed to capture a disconnect while just browsing a directory structure on the HDD (see below). > The only way to turn off Link Power Management currently is to disable > CONFIG_PM entirely. I recompiled the 4.2.0 having disabled CONFIG_PM: # CONFIG_PM is not set This time there were no observable disconnects after just plugging in the device and not doing anything else (like mounting). However, a disconnect happened much later while browsing the directory structure on a mounted FS of the HDD. Surprisingly, the disconnects do not strictly correlate with the load: some heavy copying and seeking back and forth in a HD movie worked just fine. Therefore I think the disconnect would have happened on an idle connection as well. Below is a fresh trace. The reason for the disconnect is URB_INTERRUPT again (triggered in packet #2473): http://wikisend.com/download/150664/usb3_intel2.pcapng.gz Cheers, Eugen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
