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Weird.

You can set the paper profile twice, once by hitting Page setup in the Print preview and once after hitting print. Do you get different results when setting the profile to 4x6 and borderless twice? There’s also scaling options in the Advanced tab in the printing dialog.

If that doesn’t help you could ask the experts at https://github.com/OpenPrinting/cups/issues .

Make sure to read their reporting guidelines here: https://github.com/OpenPrinting/cups/blob/master/REPORTING_ISSUES.md

The application you print with should not affect the borderless printing unless the application itself adds a margin around the image. Gwenview has a print preview which shows how it thinks it will look.

Stupid questions first: After selecting a borderless print profile, did you set the margins all the way to 0?

Can you check if the print is cut off by ~3mm or if is just rescaled?

Maybe an e-book reader like KOReader? https://flathub.org/apps/rocks.koreader.KOReader

Plenty of them support local HTML.

I assume you tried adding a new printer through KDE? There’s usually no driver needed if all you need to do is simply print/scan.

Does it fail with both options?

Which one, Bedrock or Java?

For Bedrock there is an unofficial launcher: https://flathub.org/apps/io.mrarm.mcpelauncher (Disclaimer: Never tried it)

For Java there is the offical launcher: https://flathub.org/apps/com.mojang.Minecraft

Alternatively, for Java, there are also the much better unofficial launchers like Prism: https://flathub.org/apps/org.prismlauncher.PrismLauncher

I use the Flatpak and here’s how to get VA-API working:

• Run the following command: ls -lah /dev/dri/render* and note down the number behind renderD
• Create a project
• Go to Project -> Render
• Select VAAPI AMD H264 and click Save current preset as new custom preset
• In the new preset, replace renderD129 with the result of the command in step 1, e.g. renderD128

You should now be able to hardware encode with the custom preset. Since you have an 7900 XTX you can also use H265 and AV1 to encode. For that you can copy the preset again and replace h264_vaapi with av1_vaapi or hevc_vaapi. When using AV1, you also have to switch the audio codec to opus instead of aac.