[Bug 1043163] Re: [Regression] GRUB fails to boot ("Input Not Supported") on HP

[YannUbuntu]

*** This bug is a duplicate of bug 1044596 ***
    https://bugs.launchpad.net/bugs/1044596

** This bug has been marked a duplicate of bug 1044596
   GRUB fails to boot ("Input Not Supported") on HP

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https://bugs.launchpad.net/bugs/1043163

Title:
  [Regression] GRUB fails to boot ("Input Not Supported") on HP

Status in “grub2” package in Ubuntu:
  New

Bug description:
  Reported by Helmut via email:

  I have been running 10.04 LTS for the last 2 years. GRUB would showed
  a list of my bootable partitions: Win7, HP recovery and Ubuntu
  partitions. During the upgrade there was an error message about GRUB
  not finding the disk it was installed on and it recommended to
  manually select the disks where to install it. I selected /dev/sda,
  because /dev/sda contains all my bootable partitions. Now when i boot
  my system and about the time when GRUB should display the menu my
  monitor shows the message "Input Not Supported". When I hit "Enter"
  the system starts up fine. Since i can't see the GRUB boot menu I have
  no access to my other bootable partitions. I tried to run "Boot
  Repair" (Recommended Repair, which reinstalls GRUB with no specific
  option),  and it did not change my boot problem. Here is the log from
  "Boot Repair": http://paste.ubuntu.com/1168894

  Problem was solved by using the "Uncomment GFXMODE" option of Boot-
  Repair, which simply uncommented the GFXMODE line in
  /etc/default/grub, then update-grub. Boot-Repair log of the repair:
  http://paste.ubuntu.com/1173027

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