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<div class="moz-cite-prefix">On 10/9/24 06:14, Josef Wolf wrote:<br>
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<blockquote type="cite"
cite="mid:20240909201418.GD30202@raven.inka.de">
<pre wrap="" class="moz-quote-pre">Intro:
======
I was using ubuntu (and suse) with full disk encryption and working power
management for many years now. Never have had any problems up to 18.04.
Starting with the subiquity based installer (which was introduced in 20.04
server install image, AFAIR) all of this stopped working.
For sure, none of the developers have actually tried to use the subiquity
based installer to rearrage partitioning of the disk or for creating luks
based partitions.
Long story:
===========
First, they broke the installer, so that it is no longer possible to delete
partitions, so there is no way to repartition the disks (check thread starting
with <a class="moz-txt-link-freetext" href="https://lists.ubuntu.com/archives/ubuntu-users/2023-April/310142.html">https://lists.ubuntu.com/archives/ubuntu-users/2023-April/310142.html</a>)
In 24.04, it is STILL not possible to delete existing partitions. So there is
no sane way to repartition a disk.
Then, they removed the ability to create (luks) encrypted partitions. Still no
way to create luks encrypted partitons in the (interactive) installer. It is
not even possible to re-use existing luks partitions (at least not for / or
/boot)
So I went the hard way to create cloud-config based autoinstall images with
storage layout to allow luks based full disk encryption</pre>
</blockquote>
I used the installer for 24.04 to create Luks Encrypted using the
interactive installer I cannot work out what you are talking about.<br>
<blockquote type="cite"
cite="mid:20240909201418.GD30202@raven.inka.de">
<pre wrap="" class="moz-quote-pre">
Then I noticed, that power management would no longer work (check out thread
starting at <a class="moz-txt-link-freetext" href="https://lists.ubuntu.com/archives/ubuntu-users/2023-April/310142.html">https://lists.ubuntu.com/archives/ubuntu-users/2023-April/310142.html</a>)
Display backlight and CPU always running at 100%. Not even special keys to dim
LCD backlight are working any more, emptying laptop battery as fast as possible.
In this thread I was even told BIOS is outdated and laptop is broken. Nothing
could be further from the truth: using LVM based UNENCRYPTED install, powe
management works fine (three different laptops from different vendors!)
Lots of investigation later, I found that power management works ONLY with LVM
based UNENCRYPTED install. Once any sort of disk encryption is involved, ANY
SORT OF POWER MANAGEMENT STOPS WORKNG. LCD and CPU both constantly running at
100% Even the special keys to dim LCD backlight stop working.
Maybe somebody should tell the ubuntu developers that the days to go without
disk encryption are gone... Even windows comes with full disk encryption
and working power management nowadays.
As I wrote above: despite the drawbacks of the interactive installer, I
actually CAN do installs with full disk encryption using subiquity based
autoinstall feature..
BUT there is still the problem, that any sort of power management stops
working whenever any kind of disk encryption is used.
WHY is that? THis worked fine up to 18.04.
</pre>
</blockquote>
<div class="moz-signature">-- <br>
<pre> .~. In my life God comes first....
/V\ but Linux is pretty high after that :-D
/( )\ Francis (Grizzly) Smit
^^-^^ <a class="moz-txt-link-freetext" href="http://www.smit.id.au/">http://www.smit.id.au/</a>
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