On Tue, Dec 04, 2018 at 04:45:33PM +0200, Mathias Nyman wrote: > On 03.12.2018 12:36, Richard van der Hoff wrote: > > Does anybody have any suggestions as to how I could set about debugging this? I'm seeing the same symptoms on a 4.19 kernel. > > > > > > On 19/11/2018 15:27, Richard van der Hoff wrote: > > > I have a USB-3.1 dock, which I use for video (via displayport alt mode) and power delivery, as well as keyboard, mouse, etc. > > > > > > From time to time, all connectivity with the dock drops out for a few seconds, before resetting itself. I'm trying to pin down if this is a problem with the usb drivers, pci drivers, laptop hardware, or the dock. It looks to me from the dmesg output like it could be a problem at the PCI layer, but I am only speculating really. > > > > > > Attached are the dmesg output during the problem, lsusb -v, and lspci -v. They are all recorded with a 4.15.0 kernel; I've seen exactly the same symptoms with a number of kernels between 4.8 and 4.15. > > > > > > Advice appreciated! > > > > > Mika (cc) would be the right person to contact about these kind of thunderbolt related issues. > I'm sure he would appreciate logs with a 4.19 - 4.20-rcx kernel. Right, those would help and also some knowledge about which system and dock we are dealing with :) Also if you have dual boot or similar, do you experience similar issue in Windows side?
