DisplayCAL don’t have access to the VideoLUT

Hi, guys.

I’m posting this here because my topic on DisplayCAL forum is waiting moderation for almost 3 weeks now. If someone can help me solve the following problem, I would appreciate.

I tried to apply a profile in my external monitor and I had the following error: “ArgyllCMS: Dispwin: Error – We don’t have access to the VideoLUT for clearing”.

OS: Fedora 34 with KDE Plasma

Graphics Card: AMD Radeon™ Graphics Vega 7

Monitor plugged via: HDMI


displaycal 2019-12-14T12:16:22.165507Z
Python 2.7.18 (default, Mar 31 2021, 08:53:31)
[GCC 10.2.0]
Faulthandler 3.2
wxPython 4.0.7.post2 gtk3 (phoenix) wxWidgets 3.0.5
Encoding: UTF-8
File system encoding: UTF-8
Lockfile /home/a42578/.var/app/net.displaycal.DisplayCAL/config/DisplayCAL/DisplayCAL.lock
Starting up…
SDL2: libSDL2-2.0.so.0
SDL2_mixer: libSDL2_mixer-2.0.so.0
Audio module: SDL 2.0
Enumerating display devices and communication ports…
ArgyllCMS 2.1.2
Argyll has virtual display support
Checking video card gamma table access for display 1…
Initializing GUI…

Setting up scripting host at
Check for application update…
DisplayCAL is up-to-date.
Loading calibration curves from file…
/home/a42578/.var/app/net.displaycal.DisplayCAL/data/DisplayCAL/storage/XWAYLAND3 #1 2021-05-25 15-06 2.2 F-S XYZLUT+MTX/XWAYLAND3 #1 2021-05-25 15-06 2.2 F-S XYZLUT+MTX.icc
ArgyllCMS is up-to-date.
Install profile
Session log: XWAYLAND3 #1 2021-05-25 15-06 2.2 F-S XYZLUT+MTX

Working directory:

Command line:
‘XWAYLAND3 #1 2021-05-25 15-06 2.2 F-S XYZLUT+MTX.icc’

Created dummy window
Dispwin: Error – We don’t have access to the VideoLUT for clearing
dispwin exitcode: 1

│ The profile could not be installed/activated. │

Thanks in advance.

Looks like you’re running wayland-- there is no working color management in Wayland.

If you want color management, use X11.

1 Like

Thanks for the help. I switched to X11 and everything worked just fine.

Any perspective for when color management will be available in Wayland?

I don’t know. There is a thread here that is quite long about it, but didn’t seem to go anywhere.

1 Like

Ok, thanks for the info.