Hey folks, On Sat, Aug 06, 2022 at 10:30:10PM +0900, Sugu wrote: >Package: grub-efi-amd64 >Version: 2.04-20 >Severity: normal >X-Debbugs-Cc: none > >Dear Maintainer, > >*** Reporter, please consider answering these questions, where appropriate >*** > >I run grub-install --target=x86_64-efi --efi-directory=/boot/efi --removable >and reboot, it repeats POST forever and loops. >This bug does not occur on Arch Linux, so it appears to be Debian-specific. > >*** End of the template - remove these template lines ***
... On Sat, Dec 24, 2022 at 01:53:48PM +0100, Pascal Hambourg wrote: >Hello, > >I observe the same behaviour on my laptop. >My workaround is to remove EFI/BOOT/fbx64.efi from the EFI partition. >IMO --removable should not install this file. On Mon, Dec 26, 2022 at 03:28:10PM +0100, Pascal Hambourg wrote: >I wrote: >> >> I observe the same behaviour on my laptop. > >And on another x86 desktop PC too. When loaded from the removable media path >(/EFI/BOOT/BOOTX64.EFI), shim loads fbx64.efi which reboots the system if it >did not find any BOOTX64.CSV file in /EFI/BOOT, as expected on removable >media. > >Here is the console output after setting FALLBACK_VERBOSE with > > mokutil --set-fallback-verbosity true > >efi_main: System BootOrder not found. Initializing defaults. >efi_main: tpm not present, starting the first image >Verbose enabled, sleeping for 500000 mseconds... Press the Pause key now to >hold for longer. >Reset System >Verbose enabled, sleeping for 500000 mseconds... Press the Pause key now to >hold for longer. > >> My workaround is to remove EFI/BOOT/fbx64.efi from the EFI partition. >> IMO --removable should not install this file. > >This is confirmed in the shim source package. > >- In README.fallback: >When you boot removable media, it'll be in \EFI\BOOT , but fallback.efi >won't be there, so it goes ahead and boots the normal bootloader >(grubx64.efi). > >- In shim.c: > /* Do not print the error here - this is an acceptable case > * for removable media, where we genuinely don't want > * fallback.efi to exist. > >Also fbx64.efi is not present in the EFI partition of Debian installation >images. OK, I can see what's happening here. The logic in grub-install is *very* convoluted here, with lots of different patches applied. It's quite difficult to follow. :-( Yes, you're correct - fallback should *not* be installed here if you're specifying --removable. In fact, on a Debian system we should probably not be installing fallback unless we're doing the --force-removable thing. Testing stuff now... -- Steve McIntyre, Cambridge, UK. st...@einval.com You lock the door And throw away the key There's someone in my head but it's not me
