Hi
Thanks for this answer. In the meantime, I researched a bit, and found one information where it says: NVidia has asked Ubuntu to *not* use Wayland in 22.04 for NVidia cards. So probably, 22.04 + NVidia is still using X11.
You can find out by running
echo $XDG_SESSION_TYPEin a terminal. See also https://askubuntu.com/questions/904940/how-can-i-tell-if-i-am-running-waylandSo maybe your issues are not Wayland-related.Anyway, I have decided to stay with 20.04 for some time. I mean, I'm not using a long term support version to change it every other day ;-) Ok, seriously, I was interested in Wayland, if it was stable and working fine, I wanted to give it a try (although I know X since X10, it would be a hard time to say good-bye).But Wayland seems not to be usable today, so maybe I'll wait for 24.04.Best regards,Michael
Gesendet: Mittwoch, 13. Juli 2022 um 15:47 Uhr
Von: "Frank J." <[email protected]>
An: [email protected]
Betreff: Re: [darktable-user] Darktable on xubunbu 22.04 / wayland / nvidia: Recommended or not?Am 13.07.22 um 14:04 schrieb Šarūnas:
> ...
> I wish to be wrong, but color management in Wayland may still have a
> long way to go [1].
>
> ...
>
> 1. https://gitlab.freedesktop.org/wayland/weston/-/issues/467
>
Now I get an idea, what the reason for my problems may be.
Because Ubuntu 20.04 on my mashine had some problems on startup, last
week I decided to do the LTS-upgrade earlier then 22.04.1 is released on
4th August.
I got DT 4.0 from PPA "unbuntuhandbook".
After upgrade to some new nvidia-drivers, the openCL-Support in DT was
fixed.
But one of my displays (EIZO) seemed to be out of calibration, it looks
a bit too green after the upgrade.
I found, that DisplayCAL (3.8.x) is not longer in the sources in 22.04
because of the dependencies to python 2, with is not longer supported.
But there is a new projekt "DisplayCAL-PY3" porting the code to python
3. It can be installed with "pip install DisplayCAL" which gives you a
version 3.9.6, still in progress but works.
The calibration of my new ASUS-display was done in half an hour. But the
calibration of my older EIZO (has run more then 8000 hours), takes 2
days with many attempts. Each run with other results, some lookes green,
some looked magenta, some had bad messages.
Sometimes even the hardware-defined RGB-start-point drifted from one
attempt to the next.
Each time the result was different, the colors seemed to be "unstable".
I worried, the last days of my diplay has come.
At least (after a dozen tries) I got a icc-profile that seems to work.
May this problems result from an unstable implementation of
colormanagement in wayland in Ubuntu 22.04?
Or should I begin to save some money for a new display?
Why does Ubuntu do an upgrade to a system without a stable colormanagement?
Hardware: NVidia GeForce GTX 1060 6GB, ASUS VA24E, EIZO FORIS FS2333,
XRite colormunki Smile.
Frank
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