SUMMARY Selecting "landscape" mode in the printer properties (in the "Print" dialog") does nothing except print the image in portrait mode with a third of the image missing. This happens in all KDE applications that can print, not just Gwenview. STEPS TO REPRODUCE 1. Open the "Print image" dialog by pressing Ctrl+P or from the menu 2. Click the "properties" button and select "Landscape" in the "Orientation" box 3. Print OBSERVED RESULT Image is printed in portrait mode anyway EXPECTED RESULT Image printed in landscape mode as selected SOFTWARE/OS VERSIONSOperating System: Fedora Linux 39 KDE Plasma Version: 5.27.8 KDE Frameworks Version: 5.110.0 Qt Version: 5.15.10 Kernel Version: 6.5.7-300.fc39.x86_64 (64-bit) Graphics Platform: Wayland Processors: 4 × AMD A10-7860K Radeon R7, 12 Compute Cores 4C+8G Memory: 31.3 GiB of RAM Graphics Processor: AMD Radeon RX 590 Series ADDITIONAL INFORMATION Installed evince and gthumb to rule out a driver bug and yes, both can print in landscape mode just fine, so this is 99% a Qt/KDE exclusive bug. This seems to be a recurrent bug as well.
Can be related to CUPS update. I think I had driver "Brother DCP-T520W, driverless, 1.8" before, now it's "2.0". Printing from GIMP and Firefox seems fine.
I'm having the same issue since I last updated my system (Manjaro). It was a large update, many KDE components and also all CUPS related components (cups and filters, ppd). My Canon Pixma drivers were not updated but I reinstalled them and removed/readded the printer. No good. Printing with 'lp', Libreoffice Writer, Gimp, all ok. Last week I was sure I was having the same issue printing PDFs from Okular, but I tried it now and seems ok. Gwenview definitely has this issue, printing 'landscape layout' images.
I updated Gwenview to 23.08.3-2 but the problem remains. But it's interesting to notice that, although Okular prints PDFs correctly, it prints images incorrectly just like Gwenview.
I was able to confirm the misbehavior when printing from Gwenview, version 23.08.4. Printing from Chrome and Gimp are working fine. Below is my system information: Kernel: 6.6.10-1-MANJARO Uptime: 1 hour, 16 mins Packages: 1318 (pacman), 10 (flatpak), 6 (snap) Shell: bash 5.2.21 Resolution: 2560x1440 DE: Plasma 5.27.10 WM: KWin Theme: [Plasma], Breeze [GTK2/3] Icons: [Plasma], breeze [GTK2/3] Terminal: yakuake CPU: Intel i7-4790K (8) @ 4.400GHz GPU: NVIDIA GeForce GTX 1080 Memory: 4404MiB / 32042MiB