[Bug 489688] Re: update-grub writes in wrong settings for example memmap=54M\$970M

[Bryan Quigley]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. We are sorry that we do not always have the capacity to
look at all reported bugs in a timely manner.

This was reported against a very old release so I'm going to close it.
If you still have the issue please reopen.

** Changed in: grub2 (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/489688

Title:
  update-grub writes in wrong settings for example  memmap=54M\$970M

Status in grub2 package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: grub2

  I have a memory module that memtest86 says the last 54MB is bad.
  total memory  is 1024mb.
  So, using memmap you can tell the kernel to ignore and not use a specified memory range.
  In my case memap=54M\$970, so the kernel wont use starting from 970MB the next 54Mb's.

  since it is bash script, you have to escape the $.??
  you want the linux kernel  line after splash, in /boot/grub/grub.cfg to have appended on the end, memmap=54M\$970 but
  when you edit the /etc/default/grub file to add in a kernel parameter memmap=54M\$970, grub-update 
  writes in memmap=54M$\970 which wont work.

  I dont know if my syntax for escaping the '$' is correct but if it is,
  then this is a bug.

  this is my line in /etc/default/grub
  GRUB_CMDLINE_LINUX_DEFAULT="quiet splash memmap=54M\$970"

  and running update-grub yields

  linux   /boot/vmlinuz-2.6.31-14-generic-pae root=UUID=4923760a-
  6e34-4678-b0ab-d06b151a2998 ro single memmap=54M$\970

  The '$' and '\' are reversed. That means i will have to hand edit the
  grub.cfg file everytime a new kernel comes thru or update-grub is run

  ProblemType: Bug
  Architecture: i386
  Date: Sat Nov 28 14:08:09 2009
  DistroRelease: Ubuntu 9.10
  NonfreeKernelModules: nvidia
  Package: grub2 (not installed)
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
  SourcePackage: grub2
  Uname: Linux 2.6.31-14-generic i686

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