On 5/11/21 4:08 PM, John Blinka wrote: > Hello, Gentooers, > > I just acquired a new Asus board (b560m tuf gaming+wifi) to replace a failed > gigabyte board on my main Gentoo machine. Assembly went well, it powered up > flawlessly first time, it recognized all the hardware... and then nothing. > Cannot get it to boot. > > On all my other machines, there’s a bios setting that allows me to turn off > secure boot, which allows me to boot Sysrescue from usb, or Gentoo from a > hard drive. > > Not so (as far as I can tell) on this mobo/bios. There’s the usual bios boot > menu and a secure boot submenu. However, the secure boot submenu only allows > me to select between Windows UEFI (with, presumably, secure boot enabled) and > “other OS”. I have no clue what “other OS” implies about secure boot. It > also offers the ability to accept the standard Microsoft-supplied secure boot > keys, or to change or delete them. There are a few claims on the web that > clearing the PK key (and only that key) or clearing all of the keys is the > way to turn off secure boot. I’ve tried all the combinations; none of them > allow me to boot. > > The farthest I’ve gotten is to display the Sysrescue usb boot choices. > Selecting any of them seems to (briefly, for a second) start a boot and then > the screen goes blank. Nothing after that. > > I haven’t found any mention on the web that Asus boards are particularly > linux hostile, nor much discussion implying that turning off secure boot is > particularly tricky. Most of what I’ve seen is, say, Ubuntu oriented. I > gather that they have gone through the process of getting their secure boot > keys authorized by Microsoft. > > Anybody have success getting Gentoo to boot from a recent Asus mobo? > > Thanks! > > John Blinka
Try to watch this clip it might help. https://www.google.com/search?sxsrf=ALeKk039uHXT9NuDloVx1Rvp0Mw3kBzEXg:1620773038736&q=asus+board+%22b560m%22+turn+off+secure+boot&sa=X&ved=2ahUKEwjSsfCJ2sLwAhXCpJ4KHdr6Bz4Q5t4CMAx6BAgeEA0&biw=1263&bih=660#kpvalbx=_ygibYJexK87E-gT-gLaYDw55
