Working around Thinkpad + ThinkVision issues on Ubuntu
The centerpiece of our home office setup usually consists of a docking station which charges the notebook and acts as a proxy to various peripheral devices.
For reference, I am running Ubuntu 18.04 on a Thinkpad T480. You might not run into the same issues on other devices.
Lately I switched to using themonitor. The neat thing is that it made my docking station unessential:
- The monitor offers an USB-C Hub which can be connected to the the Thinkpad's USB-C or Thunderbolt socket.
- Peripheral devices (mouse, keyboard, webcam) can be connected to the monitor and are relayed to the notebook.
- The video signal is transmitted over the same cable.
- The notebook is being charged by the monitor over the same cable¹.
My goal is to bring the number of cables connected to my noteobok to a minimum. This makes it very easy to switch between multiple workplaces.
If you are using the monitor as the single power source, the Thinkpad will will loose its video signal multiple times a day. This is really unnerving as the signal unpredictably tends to jump a few times back and forth between your notebook and the monitor. I tried turning offor reducing the display's resolution/fps with no effect.
Don't charge your ThinkPad using the ThinkVision monitor. Charging the notebook with a traditional power cable (using the second USB-C/Thunderbold socket) is necessary for a stable long-term use.
I noticed a sine-shaped artifact when scrolling through text documents or large websites. My window manager "Marco" seems to have caused that issue, I solved it by switching to "Compiz" in Mate Tweak.
The monitor does not ship with an AUX socket. You may still connect a headset with your monitor by using an AUX to USB connector.