Bug#1025909: systemd: "reboot" fails to boot into the grub-menu

[Michael Biebl]

Am 11.12.22 um 20:51 schrieb Martin Ziegler:
> Package: systemd
> Version: 252.3-1
> Severity: normal
> X-Debbugs-Cc: ziegler at uni-freiburg.de
> 
> Dear Maintainer,
> 
> "reboot" fails to boot into the grub-menu, as well as the command
> "systemctl reboot". The least kernel in the grub menu is booted
> instead.
> 
> "systemctl reboot --boot-loader-menu=5" gives an error
> 
> A reboot 1.12.2022 (with versions 252.1-1) worked as expected, the
> next boot 7.12.2022 (still with versions 252.1-1) showed the
> incriminated behaviour. With versions 252.2-1 and 252.3-1 still no
> boot into the grub menu.

The systemctl man page says that
        --boot-loader-entry=ID
"...Note that not all boot loaders support this functionality."

I'm not sure if grub supports this functionality or if you need 
systemd-boot. That said, if you claim that 252.1-1 was working with 
grub, it is possible, that there is a regression somewhere

> (v252-stable)$ git log v252.1..v252.3 --oneline | grep boot
> 1c9e7fc8f2 boot: Only do full driver initialization in VMs
> 79b97ec652 boot: improve support for qemu (helpers only)
> 87add68b39 boot: Make sure all partitions drivers are connected
> 989f0c52e1 boot: Use EFI_BOOT_MANAGER_POLICY_PROTOCOL to connect console devices
> b0b97848e8 bootspec: fix null-dereference-read
> b39f2ab98f boot: Use xstr8_to_16 for path conversion
> 6387a74d2c boot: Use xstr8_to_16
> ff7469af96 boot: Add xstrn8_to_16
> 2ddd7b5def bootctl: rework how we handle referenced but absent EFI boot entries
> 2daecc7179 bootctl: downgrade log message when firmware reports non-existent or invalid boot entry
> 9a7186e92a bootctl: make boot entry id logged in hex
> c1dd021d16 boot: Silence driver reconnect errors
> 9b6f12262f udev: make sure auto-root logic also works in UKIs booted from XBOOTLDR
> 5c34bc9bc3 boot/measure: fix oom check
> 6189505d79 boot: Correctly handle @saved default patterns
> aff1caf3fd boot: Replace firmware security hooks directly
> f9d9a68ecc boot: Rework security arch override
> c6d7b4014c boot: Manually convert filepaths if needed
> c8c5b79fb6 boot: Do not require a loaded image path
> 5894d4bd79 boot: Fix memory leak
> 5c0b918c02 boot: Fix error message

As you see, there are some boot related changes between .1 and .3

Your best bet is probably to file this issue upstream at
https://github.com/systemd/systemd/issues/new
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