Bug 500701 - Display Chroma Information
Summary: Display Chroma Information
Status: RESOLVED DUPLICATE of bug 454445
Alias: None
Product: systemsettings
Classification: Applications
Component: kcm_kscreen (other bugs)
Version First Reported In: 6.3.1
Platform: Fedora RPMs Linux
: NOR wishlist
Target Milestone: ---
Assignee: kscreen-bugs-null@kde.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-02-24 23:30 UTC by Stew
Modified: 2025-02-28 08:34 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:


Attachments

Note You need to log in before you can comment on or make changes to this bug.
Description Stew 2025-02-24 23:30:57 UTC
SUMMARY
Request the inclusion of chroma information when viewing "Display Configuration". Currently, there is a toggle to set the RGB range to [Automatic,Full, Limited], but no additional detail on the chroma sampling is provided (RGB 444, Y'CrCb444, Y'CrCb422, etc).

STEPS TO REPRODUCE
1. Navigate to System Settings > Display Configuration
2. Select monitor of interest

OBSERVED RESULT
No chroma information is displayed

EXPECTED RESULT
Chroma information of active configuration is displayed.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 41
KDE Plasma Version: 6.3.1
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.12.15-200.fc41.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i7-1185G7 @ 3.00GHz
Memory: 15.3 GiB of RAM
Graphics Processor: Mesa Intel® Iris® Xe Graphics
Comment 1 John 2025-02-26 21:09:59 UTC
I'm not sure that Intel's driver in the Linux kernel supports that.
See this comment on an old bug report of mine:
https://bugs.kde.org/show_bug.cgi?id=454445#c1

I don't think Intel cared / cares that much to fix / improve its driver.
In case I'm wrong and it actually cares, maybe some bug reports for the Intel's driver on Linux bug reporting platform would help, if you know where that is.

AMD for examples exposes a lot of information with their driver:
https://github.com/Umio-Yasuno/amdgpu_top
Even though I think the bit depth and the chroma subsampling is missing there too.
Comment 2 Stew 2025-02-26 22:59:16 UTC
I searched for existing reports but did not see 454445. This is mostly a duplicate of your entry, happy to have this marked as duplicate.
Comment 3 Nate Graham 2025-02-27 23:12:21 UTC

*** This bug has been marked as a duplicate of bug 454445 ***
Comment 4 John 2025-02-28 08:34:21 UTC
(In reply to Stew from comment #2)
> I searched for existing reports but did not see 454445. This is mostly a
> duplicate of your entry, happy to have this marked as duplicate.

No problem, don't worry about!
I think I didn't choose a proper title for that one, but it was the best I could think at that time.
Feel free to change it / improve it to be more findable if you want to do that.
I just updated the System Settings and the OS versions to be more clear that the problem still exists.