HMDI display shutdown when wayland loaded

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HMDI display shutdown when wayland loaded

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Contributor V

Hardware: iMX8MM-EVK + MIPI-DSI to HDMI

Platform: uboot2017 + Linux-4.14.98_2.0.0 from yocto 2.0

Description:

Display is okay with uboot up, and display setting through commandline (video=1280x720-32@60e) is fine during kernel loading. The "OpenEmbedded" loading screen can been seen, and then display is shutdown without wayland desktop. 

More than three LCD monitors are used for testing, only one monitor can display wayland desktop. 

It's appreciated for any comments and hits. Thanks in advance

Best Regards

Cheng Shi

www.emtronix.com

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Contributor V

Problem fixed,it should add the following commandline

drm_kms_helper.edid_firmware=edid/your_edid.bin

instead of "video=..." to force display resolution.