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noreset

Member

Registered: 2018-09-19

Posts: 53

Wayland warnings using Calibre

Hi everyone, I just installed calibre using pacman (since it is the same version provided as binary within the Calibre's website) I'm able to use it with my Tolino, but I got some warnings which I'd like to fix, but I found nothing specific for Calibre.

I use the Gnome/Wayland set, and these are the messages:

Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
libpng warning: iCCP: known incorrect sRGB profile

If someone already dealt with it, I would like to understand what is happening and how to properly fix it.

HH

Last edited by noreset (2019-01-19 20:00:51)

arojas

Developer

From: Spain

Registered: 2011-10-09

Posts: 2,294

Re: Wayland warnings using Calibre

There is nothing to fix. Qt is simply informing you that it's not using the wayland platform plugin

eschwartz

Fellow

Registered: 2014-08-08

Posts: 4,097

Re: Wayland warnings using Calibre

The second message is just useless information from libpng telling you its sense of aesthetics is affronted by the metadata in one of the PNG images from calibre's resources.

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noreset

Member

Registered: 2018-09-19

Posts: 53

Re: Wayland warnings using Calibre

There is nothing to fix. Qt is simply informing you that it's not using the wayland platform plugin

Use QT_QPA_PLATFORM=wayland

This message gave me the impression I had to set some Kernel parameter, by the way, thanks for your answer.

The second message is just useless information from libpng telling you its sense of aesthetics is affronted by the metadata in one of the PNG images from calibre's resources.

Get it! Not a big deal, thanks for pointing that out.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,290

Re: Wayland warnings using Calibre

Those are environment variables you could of course try to set that and check if everything still behaves as you'd expect, however there's likely a reason Qt is being conservative here.