Bug 513578

Summary: Unmet dependencies during Discover update - qt6-webengine: Depends: liblcms2-2
Product: [KDE Neon] neon Reporter: Nick <nick.craig.law>
Component: Packages User EditionAssignee: Neon Bugs <neon-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: jr, neon-bugs-null, nick.craig.law
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Nick 2025-12-19 12:27:41 UTC 
STEPS TO REPRODUCE
1. Just doing a normal upgrade via Discover
2. 
3. 

OBSERVED RESULT
<html>Dependency resolution failed:<br/><br/>The following packages have unmet dependencies:
  qt6-webengine: Depends: liblcms2-2 (&gt;= 2.16) but 2.14-2build1 is to be installed
</html>

EXPECTED RESULT
No errors.

SOFTWARE/OS VERSIONS
Operating System: KDE neon User Edition
KDE Plasma Version: 6.5.2
KDE Frameworks Version: 6.19.0
Qt Version: 6.9.3
Kernel Version: 6.14.0-35-generic (64-bit)
Graphics Platform: X11
Processors: 20 × 12th Gen Intel® Core™ i7-12700H
Memory: 16 GiB of RAM (15.3 GiB usable)
Graphics Processor 1: Intel® Graphics
Graphics Processor 2: NVIDIA GeForce RTX 3060 Laptop GPU

ADDITIONAL INFORMATION
Comment 1 Nick 2025-12-19 12:40:00 UTC 
Due to this error "The following packages have unmet dependencies: qt6-webengine: Depends: liblcms2-2 (&gt;= 2.16) but 2.14-2build1 is to be installed" I cannot update my system via discover. Is there a fix or workaround for this? I've had no problems in the past with applying upgrades to KDE neon via discover. I now have two systems complaining about unmet dependencies.
Comment 2 Nick 2025-12-19 12:42:48 UTC 
I also have just the standard entries in /etc/apt/sources.list, e.g.

deb http://archive.ubuntu.com/ubuntu/ noble main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ noble-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ noble-updates main restricted universe multiverse
Comment 3 Nick 2025-12-19 13:39:54 UTC 
I think this may be the solution


sudo apt install neon-settings-2
sudo apt update
sudo apt dist-upgrade

See https://bugs.kde.org/show_bug.cgi?id=512669
Comment 4 Nick 2025-12-19 13:47:38 UTC 
Confirmed, the following solved the problem.

sudo apt install neon-settings-2
sudo apt update
sudo apt dist-upgrade
Comment 5 Nick 2025-12-19 13:48:25 UTC 

*** This bug has been marked as a duplicate of bug 512669 ***