[ltp] Thunderbolt 3 docks?
jeff.taylor at ieee.org
Tue Mar 20 14:52:33 CET 2018
Quoting Rob Kendrick <rjek+linux-thinkpad.org at rjek.com>:
> On Mon, Mar 19, 2018 at 11:33:09AM -0700, Rubin Abdi wrote:
> > I just ordered one of these USB-C Lenovo docks for my new machine (
> > https://www.amazon.com/gp/product/B01N9RW2A3 ). I'm realizing this devices
> > differs from a Thunderbolt 3 dock that Lenovo also sells (though apparently
> > lower rated than the USB-C one). I'm wondering if anyone under Linux has
> > had any success or failures with either type of dock.
> I use one of these with a T470 (20HD000LUK), and it mostly works. I use
> the ethernet, USB 3 hub, dual DisplayPort out, power in. I have not
> tested the audio, but PulseAudio detects it. Very occationally docking
> or undocking confuses Linux enough that I need to restart, but doing
> this only when the system is on seems to resolve that.
> Also, rather annoyingly, when you unplug the C cable, the hub powers off
> meaning some things lose state. Other than that, no complaints.
This sounds very similar to my experience with the older USB Mini-dock I
bought with my T520. I've never tried the video. The audio works fine,
though sometimes I have to manually switch back from internal to USB audio
after resume from suspend.
Also sometimes it appears X11 hangs on resume, black screen and a lot of disk
activity. When it times out, I'm logged out and video is dimmer. A reboot
fixes the dimness. As an experiment, I've unplugged the Mini-doc to isolate
the problem. It's been a week with no problems. Suggestive, but not
definitive. This started about two months ago while I was on OpenSuSE Leap
42.2. It continues on 42.3.
More information about the Linux-Thinkpad