Originally posted by tegs
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And not only the Kernel is updated.
You cannot simply create a snapshot for LTS and don't update it for 2 years.
Given that it's the question whether monthly releases are useful or whether they produce more overhead than a 6-month release.
I think the real problem for most users isn't the rolling update factor for Ubuntu but more the non-update factor.
I am not sure if the latter is caused by relying on Debian.
The greatest problem is that Ubuntu creates a snapshot of kernel and userspace at a certain date and takes this as base for the next release.
But even though minor bugfix updates are released within the window of snapshot date and release date of the snapshot, they are not contained within the release.
Same goes for updates after release date.
Here are some examples for Ubuntu's latest release (17.10):
- Kernel version today is 4.13.0-16 (whatever this strange version system is, I guess and hope it's 4.13.16) --> Upstream: EOL (not maintained anymore by upstream) --> so bad choice of kernel version for a release
- Mesa 17.2.2 is in 17.10 --> Upstream: 17.2.8 (!) so Ubuntu missed 6 (!) releases of bugfixes for graphics.
You can complete the list on your own.
We even have a great use-case why this policy is bad. Ubuntu uses an outdated Kernel, forgot to backport important patches for intel-spi and activated a kernel module despite the warning, with the result that a lot of notebooks were bricked.
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