https://bugs.kde.org/show_bug.cgi?id=470629
Bug ID: 470629
Summary: Unable to configure HDMI Content Type bit
Classification: Plasma
Product: kwin
Version: 5.27.5
Platform: unspecified
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: nw9165-jjnfov5...@yahoo.com
Target Milestone: ---
Hi,
On KDE Plasma 5.27.5 on Linux (both with Wayland and X), when going to "System
Settings -> Display and Monitor -> Display Configuration", there is no setting
to adjust the HDMI Content Type bit.
Such an option already exists in the Intel graphics control panel on MS
Windows.
And the Intel graphics driver on Linux also supports configuring the Content
Type bit (AMD and NVIDIA still pending):
* https://bugs.freedesktop.org/show_bug.cgi?id=104506
* https://gitlab.freedesktop.org/drm/amd/-/issues/830
* https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/-/issues/399
* https://bugs.freedesktop.org/show_bug.cgi?id=104510
But KDE Plasma does not have a UI setting to adjust it.
To elaborate:
Many HDMI TVs can be switched into a "PC Mode". This usually requires
adjustments via the TVs OSD (on screen display) Menu and remote control.
In PC Mode, most of the TVs built-in image processing is being disabled and the
TV no longer applies chroma subsampling (YCbCr 4:2:0 or 4:2:2).
This allows to display an unaltered RGB image with 4:4:4 chroma, which is
desirable for use as a computer monitor.
Having to adjust the setting via the TV's OSD Menu every time when using a
computer is cumbersome though.
This can be automated by sending the IT content type bit via HDMI. This will
automatically make the TV go into PC Mode when the computer is sending the HDMI
signal to the TV.
Submitting this into the "kwin" queue. If it needs to be moved to a different
queue, please feel free to move it to the appropriate queue.
Regards
--
You are receiving this mail because:
You are watching all bug changes.
