https://bugs.kde.org/show_bug.cgi?id=462264
Bug ID: 462264
Summary: Plymouth Theme cut off on multi monitor setup
Classification: Plasma
Product: Breeze
Version: 5.26.3
Platform: Neon
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Plymouth
Assignee: plasma-b...@kde.org
Reporter: m...@apache.org
CC: sit...@kde.org
Target Milestone: ---
SUMMARY
When I boot up my laptop while it is connected to my secondary screen I can't
see the LUKS password input field.
This happened to Kubuntu as well and was fixed there. See
https://bugs.launchpad.net/ubuntu/+source/kubuntu-settings/+bug/1969984
> [Impact]
>
> * Users of mixed-resolution screens, particularily those with mixed 4K and
> 1080p resolutions, are reporting issues with the Kubuntu plymouth theme
> being off-center, and in some ways unusable as the password entry box
> for encrypted disks appears off-screen on the primary built-in display
> on some laptops.
>
> * This is a usability issue that did not appear on previous versions of
> plymouth, but are easily fixed by an updated theme. As Ubuntu Studio
> and Ubuntu Desktop were not impacted as they used child themes of
> plymouth-theme-spinner, this seemed to be a clear solution as this
> theme uses the computer's internal framebuffer to render the screen
> properly.
>
> [Test Plan]
>
> * Install Kubuntu to an LVM encrypted system.
> * Connect system to monitors with multiple default resolutions
> * EXPECTED: plymouth theme will show as centered on all monitors,
> including password entry box
> * ACTUAL: plymouth theme will be in the lower-left of higher
> resolutions, and off-screen on lower resolutions.
>
> [Where problems could occur]
>
> * This new plymouth theme is a fork of the already existing Ubuntu and
> Ubuntu Studio themes and is highly tested, but it is possible it will
> just not work on some screens. If this does happen, we will determine
> additional course of action.
>
> [Other Info]
>
> * Original bug report follows:
>
> ----
>
> Summary:
>
> The Kubuntu Plymouth theme for startup and disk decryption is off-center
> on multi-monitor setups with varying resolutions.
>
> Steps to Reproduce:
>
> - Connect a 4k external display to a 1080p system.
> - Start Kubuntu 22.04 LTS
>
> Actual Results
>
> The Plymouth startup and disk encryption graphic are shifted down and to the
> right. This do NOT occur when using a single screen.
>
> Expected Results:
>
> The theme and disk encryption graphic should either be centered on all
> screens,
> or, as in Focal, should only be shown on the laptop screen.
>
> TODO
>
> - Test with more monitor resolutions
>
> See the attached images.
>
> Assessment:
>
> This is likely due to a non-responsive (old-style) Plymouth theme. We could
> likely create a responsive if it is acceptable.
STEPS TO REPRODUCE
See above
OBSERVED RESULT
See above
EXPECTED RESULT
See above
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Neon 22.04
(available in About System)
KDE Plasma Version: 5.26.3
KDE Frameworks Version: 5.100.0
Qt Version: 5.15.7
ADDITIONAL INFORMATION
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