I have a laptop with USB type-C monitor connected. It works OK with linux and windows, however the rEFInd boot screen is only shown on the laptop screen (which I do not use while the monitor is connected). Is there some configuration option I am not able to find to enable external monitor while booting?
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rEFInd relies entirely on EFI drivers for its display. Chances are your laptop lacks drivers for your USB-C monitor, so rEFInd won't be able to use it; however, if the laptop does include drivers in its firmware, you might be able to use it by adjusting the resolution option in refind.conf. Try setting this to a ridiculous value, like resolution 1 1. rEFInd should complain and present a list of valid resolutions. You can then try each one in turn. Try using the mode number (one number) rather than the resolution size (two numbers); sometimes two displays or modes have identical sizes but different mode numbers, so using the mode number lets you switch between displays.
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I have a laptop with USB type-C monitor connected. It works OK with linux and windows, however the rEFInd boot screen is only shown on the laptop screen (which I do not use while the monitor is connected). Is there some configuration option I am not able to find to enable external monitor while booting?
rEFInd relies entirely on EFI drivers for its display. Chances are your laptop lacks drivers for your USB-C monitor, so rEFInd won't be able to use it; however, if the laptop does include drivers in its firmware, you might be able to use it by adjusting the
resolutionoption inrefind.conf. Try setting this to a ridiculous value, likeresolution 1 1. rEFInd should complain and present a list of valid resolutions. You can then try each one in turn. Try using the mode number (one number) rather than the resolution size (two numbers); sometimes two displays or modes have identical sizes but different mode numbers, so using the mode number lets you switch between displays.