[Bug 1456911] Re: Ubuntu installation/update-grub fail on specific BIOS

[Ivan Hu]

And I've also tested it,

modified the script on 30_uefi-firmware
   [ "$(( $(printf %x \'"$(cat $OsIndications | cut -b1)") & 1 ))" = 1 ]; then
to 
   [ "$(( $(printf %d \'"$(cat $OsIndications | cut -b1)") & 1 ))" = 1 ]; then

could fix this issue.

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https://bugs.launchpad.net/bugs/1456911

Title:
  Ubuntu installation/update-grub fail on specific BIOS

Status in grub package in Ubuntu:
  New

Bug description:
  Some new Bios would like to support the new feature,capsule update,  on UEFI spec. 2.4b.
  So the UEFI variable OsIndicationsSupported will be set as 0x1F on Bios, this causes the update-grub fail, also Ubuntu installation fail.

  $ sudo update-grub
  Generating grub configuration file ...
  Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
  Found linux image: /boot/vmlinuz-3.19.0-16-generic
  Found initrd image: /boot/initrd.img-3.19.0-16-generic
  Found linux image: /boot/vmlinuz-3.19.0-15-generic
  Found initrd image: /boot/initrd.img-3.19.0-15-generic
  /etc/grub.d/30_uefi-firmware: 34: /etc/grub.d/30_uefi-firmware: arithmetic expression: expecting EOF: " 1f & 1 "
  ~

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