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.
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?
Solved! Go to Solution.
This caused by DCSS, it handled the no compressed framebuffer as a compressed format. please try the attached patch.
This issue can be reproduced on L4.19.35_1.1.0_MX8MQ Linux Binary Demo Files.
Now we are facing the exact same problem as you.
This problem does not occur with fbdev-backend, but seems to be a phenomenon specific to drm-backend.
If you have a clue to solving this problem, let us know.
Moving the USB mouse before pressing the (SUPER+s) shortcut will be easier to capture the screen.
After I back port this patch to L4.14.98_2.0.0-GA, it works.
Thanks for helps.
I am reviewing this internally.