[Bug 1814599] [NEW] os-prober truncates initrd line, results in kernel panic

[Sancho]

Public bug reported:

With multiple initrd paths (e.g. for intel microcode) os-prober and linux-boot-prober report only the first part, the microcode. The /boot/initrd.img is missing.
A resulting grub.cfg is therefore incomplete and can’t boot the OS.

This issue is known since 2016 but still lurking in 2019:
https://savannah.gnu.org/bugs/index.php?47681
and
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=820838

It seems the problem is to substitute a caret by a blank?

** Affects: os-prober (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1814599

Title:
  os-prober truncates initrd line, results in kernel panic

Status in os-prober package in Ubuntu:
  New

Bug description:
  With multiple initrd paths (e.g. for intel microcode) os-prober and linux-boot-prober report only the first part, the microcode. The /boot/initrd.img is missing.
  A resulting grub.cfg is therefore incomplete and can’t boot the OS.

  This issue is known since 2016 but still lurking in 2019:
  https://savannah.gnu.org/bugs/index.php?47681
  and
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=820838

  It seems the problem is to substitute a caret by a blank?

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