On Fri, Dec 10, 2021 at 07:54:34PM -0500, Felix Kuehling wrote: > Do you actually need to restore the exact boot-up mode? If you have the same > framebuffer memory layout (width, height, bpp, stride) the precise display > timing doesn't really matter. So we "just" need to switch to a mode that's > compatible with the efifb framebuffer parameters and point the display > engine at the efifb as the scan-out buffer. That'll probably doable for a normal kexec but in case of a crashdump kexec I don't think it is a good idea to touch the gpu using the driver of the kernel which just crashed ... take care, Gerd
