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i.MX8MQ EVK HDMI outputs noises after the screen is captured

Question asked by James Wu on Feb 20, 2020
Latest reply on Mar 15, 2020 by James Wu

Device: i.MX 8MQuad EVK rev B3

Software: L4.14.98_2.0.0_MX8MQ Linux Binary Demo Files


Use the Weston keyboard shortcut (SUPER + s) to capture the screenshot.

  • Windows key and s key
  • It's not easy to trigger this shortcut so please try it more


When the screen is captured, the captured screenshot (PNG format) is automatically stored in /wayland-screenshot-YYY-MM-DD_HH-mm-ss.png and the HDMI output becomes noisy.


The captured PNG file is correct. Please see the attached file, wayland-screenshot-2020-02-17_16-17-15.png.

There are a lot of noises on the HDMI output. Please see the attached photo, imx8mq-hdmi-output-noise.jpg.


Any solution/patch to solve this issue?