I have a weird issue. After the mac hard disk is selected for boot from picker. The apple logo with the progress bar appears, it tends to load say about 30-40% and then the display switches off. It switches back on at the login screen. The weird part is this was not happening on Catalina. Its occurring on BigSur though. I have an RX580. Any ideas what could be causing the display to switch off? haven't changed anything apart from adding dk.e1000=0 in boot-args for the Intel I225-V no other changes.
Cheers.
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