LWN: Comments on "Plasma 5.24 released"

Plasma 5.24 released

flussence — Sun, 06 Mar 2022 22:07:13 +0000

Following up with this to say that I've just spent half an hour debugging someone else's unsuccessful attempt to run screen-recording software (obs-studio, ffmpeg -f kmsgrab in desperation) under Plasma 5.24, and it's a good thing this was fresh in my memory because it turned out to be exactly the problem — it probably saved them an entire day of escalating frustration. Not a great look either way :-/

Plasma 5.24 released (and color management)

mpr22 — Mon, 28 Feb 2022 18:00:48 +0000

It appears that I opened a settings widget called "Color Profiles" and set the unnecessarily skeuomorphic switch for my monitor to its "off" position, indicating "do not use a color management profile at all".

Plasma 5.24 released (and color management)

hummassa — Mon, 28 Feb 2022 12:24:51 +0000

Hi! Please care to elaborate how did you "spike" your color management in Debian? I am having trouble with one monitor *and* with an HP printer...

Plasma 5.24 released (and color management)

mpr22 — Fri, 11 Feb 2022 17:50:56 +0000

I completely spiked the colour management on my X11 Debian system because the default profile it was offering for my monitor was not merely suboptimal but flat-out incomprehensibly bad (it turns tux's feet and beak in the LWN logo magenta!), I don't have a colorimeter, and I run a piece of proprietary software that uses the colour management profile unconditionally if it exists (whereas Firefox can at least be told "don't use colour management").

Plasma 5.24 released (and color management)

Herve5 — Fri, 11 Feb 2022 15:38:48 +0000

> An increased colour depth is good, but it still leaves Wayland with a major deficit, namely colour management.

Thank you Epeeist!
I am on Debian because of wholly different reasons (basically, the independence of their Condorcet-voted management), but I discover with great surprise the .icc profiles I have been using for years to align monitors and printers are not the rule by far...

Thanks again!
Herve, also a 14-bit RAW user ;-)

Plasma 5.24 released

mroche — Thu, 10 Feb 2022 23:25:12 +0000

Red Hat also hired Sebastian Wick a few months ago as part of (IIRC) an HDR development push. Sebastian was the initial developer of the in-progress color management Wayland protocol:

https://gitlab.freedesktop.org/wayland/wayland-protocols/...

If you look through his other activity on Freedesktop's GitLab he's involved in other color related activities.

Plasma 5.24 released

farnz — Wed, 09 Feb 2022 16:06:57 +0000

This Collabora blog post from 2020 and the follow up this January suggest that it's not about not seeing it as an issue - rather it's that this is important to get right, and they'd rather a good design that works well, than two or three attempts that have to be discarded because of major flaws.

Plasma 5.24 released

epeeist_pitlochry — Wed, 09 Feb 2022 14:33:15 +0000

"Buried deep in the long changelog is something pretty daring: making 30bpp the default (at least on Wayland, don't know if that code affects X11 too)."

An increased colour depth is good, but it still leaves Wayland with a major deficit, namely colour management.

This really is a drawback to anyone processing images, yet the Wayland developers don't seem to see it as an issue.

(Oh, proud user of a Nikon D850 who shoots in RAW format at 14bpp.)

Plasma 5.24 released

zzag — Wed, 09 Feb 2022 08:58:32 +0000

No, that change affects only the DRM backend in kwin_wayland. So far we haven't received bug reports about broken apps.

Plasma 5.24 released

flussence — Wed, 09 Feb 2022 07:37:23 +0000

Buried deep in the long changelog is something pretty daring: making 30bpp the default (at least on Wayland, don't know if that code affects X11 too).

Hopefully there won't be a wave of surprised and angry people finding their legacy apps broken for nothing.