Public bug reported:
I need to modify the kernel command line, such as to work around bug
1573095. I edit GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub and
rerun update-grub but this has no effect.
The reason is that this is redefined in /etc/default/grub.d/50-cloudimg-
settings.cfg and that one overrides /etc/default/grub. I was misled by
the comment in /etc/default/grub and information widely available on the
Internet that editing /etc/default/grub is sufficient, and looked no
further.
I understand the reason for not modifying /etc/default/grub in cloud
image builds (to avoid future conffile prompts) and I'm not suggesting
that it should be modified. To fix this UX issue properly I think the
grub package needs to provide a mechanism that allows cloud image builds
to override the default without dropping in an overriding file (or for
that override file to be the sole place that users need to look).
This affects grub2 2.02-2ubuntu8.9 from Bionic cloud image build
20190114 for example.
** Affects: cloud-images
Importance: Undecided
Status: New
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
I need to modify the kernel command line, such as to work around bug
- 1573095. I edit /etc/default/grub and rerun update-grub but this has no
- effect.
+ 1573095. I edit GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub and
+ rerun update-grub but this has no effect.
The reason is that this is redefined in /etc/default/grub.d/50-cloudimg-
settings.cfg and that one overrides /etc/default/grub. I was misled by
the comment in /etc/default/grub and information widely available on the
Internet that editing /etc/default/grub is sufficient, and looked no
further.
I understand the reason for not modifying /etc/default/grub in cloud
image builds (to avoid future conffile prompts) and I'm not suggesting
that it should be modified. To fix this UX issue properly I think the
grub package needs to provide a mechanism that allows cloud image builds
to override the default without dropping in an overriding file.
This affects grub2 2.02-2ubuntu8.9 from Bionic cloud image build
20190114 for example.
** Description changed:
I need to modify the kernel command line, such as to work around bug
1573095. I edit GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub and
rerun update-grub but this has no effect.
The reason is that this is redefined in /etc/default/grub.d/50-cloudimg-
settings.cfg and that one overrides /etc/default/grub. I was misled by
the comment in /etc/default/grub and information widely available on the
Internet that editing /etc/default/grub is sufficient, and looked no
further.
I understand the reason for not modifying /etc/default/grub in cloud
image builds (to avoid future conffile prompts) and I'm not suggesting
that it should be modified. To fix this UX issue properly I think the
grub package needs to provide a mechanism that allows cloud image builds
- to override the default without dropping in an overriding file.
+ to override the default without dropping in an overriding file (or for
+ that override file to be the sole place that users need to look).
This affects grub2 2.02-2ubuntu8.9 from Bionic cloud image build
20190114 for example.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1812752
Title:
UX: changing GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub has no
effect in cloud images
To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-images/+bug/1812752/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
