Freebook N150 - Issues with external monitor

Serial number: JFreeBCY1I250500762
Place I bought it from: Aliexpress
Date of buy: Jul/20/2025
My location: Chile

Issues

  1. When an external monitor is connected (via an USB-C adapter with an HDMI output), if the lid is closed, the touch screen randomly activates and makes presses, opening menus and clicking on stuff. The erratic behaviour stops when the lid is opened.
  2. When an external monitor is connected and it is used as a sound output, the audio cuts off or interrupts in a seemingly random way for some seconds. This does not happen with the onboard audio.

EDIT: Upon further analysis, I’ve found that the phantom touches described in point (1) also happen without the computer connected to an external monitor. I configured my device not to sleep when closing the lid, but after closing it and waiting some time, I find random stuff opened when I open the lid again.