07-08-2021, 03:09 PM
I saw this funny thing, when playing with my own UEFI OS Loader on a RK3399 board. But it was on the HDMI interface.
I break uboot flow manually and command it to load and jump into my UEFI OSL (fatload, bootefi). My OSL shows things as expected, no artifacts, then I press a key and my unfinished yet OSL returns to uboot, then I type bootdefault, forgot the exact command name and uboot types reporting about loading linux, and right after jump into linux, this stripy image appears on the screen. definitely looks like linux overwriting the GOP framebuffer.
I break uboot flow manually and command it to load and jump into my UEFI OSL (fatload, bootefi). My OSL shows things as expected, no artifacts, then I press a key and my unfinished yet OSL returns to uboot, then I type bootdefault, forgot the exact command name and uboot types reporting about loading linux, and right after jump into linux, this stripy image appears on the screen. definitely looks like linux overwriting the GOP framebuffer.
ANT - my hobby OS for x86 and ARM.