Created attachment 116387 [details] screenshot STEPS TO REPRODUCE 1. set display scaling factor (I use 1.2) in system settings > display and monitor > scale display. Restart plasma. 2. enable preview for text files in Dolphin settings ("general" section, "previews" tab) 3. enable preview feature in Dolphin 4. open some location containing text files OBSERVED RESULT previews of the text files are blurry, see the screenshot please. EXPECTED RESULT crisp previews SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.14.3 Qt Version: 5.11.2 KDE Frameworks Version: 5.52.0
Is this true for text files with previews on the desktop and the file open/save dialogs too, or only in Dolphin?
Same thing in file open/save dialogs. Preview of text files does not work on the desktop.
it seems fixed now Operating System: Arch Linux KDE Plasma Version: 5.15.3 KDE Frameworks Version: 5.56.0 Qt Version: 5.12.2
Yep, this was probably fixed with https://cgit.kde.org/kiconthemes.git/commit/?id=89344923c00b7bc502f5c24be50027b457d82177
Created attachment 120695 [details] screenshot, kio-extras 19.04.2 This bug is back. Operating System: Arch Linux KDE Plasma Version: 5.15.90 KDE Frameworks Version: 5.59.0 Qt Version: 5.13.0 RC
Created attachment 120698 [details] screenshot, kio-extras 19.04.2
Not sure if this is fixable. Thumbnails are just images that are created and cached independed from the display.
Have you tried deleting your thumbnail cache ? rm -r ~/.cache/thumbnails Perhaps the blurry thumbnails were generated before you got the fix and have been kept since. I don't reproduce currently with DPR = 2.
Created attachment 128542 [details] screenshot on X11, scale factor 200% Apparently this issue is fixed on X11, see the attached screenshot please. But it persists on Wayland. Thank you for your interest on this issue Méven. :) Operating System: Arch Linux KDE Plasma Version: 5.18.90 KDE Frameworks Version: 5.70.0 Qt Version: 5.15.0 rc2
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
Under Wayland, this is a different issue. I have a patch serie to fix this at https://phabricator.kde.org/D29397
A possibly relevant merge request was started @ https://invent.kde.org/system/dolphin/-/merge_requests/147
Git commit 6f632283d022aaf9d8e2bda81a5409aa36242d4d by Méven Car. Committed on 16/07/2021 at 06:53. Pushed by meven into branch 'master'. Allow to have HiDpi previews M +3 -0 src/main.cpp M +2 -2 src/panels/information/informationpanelcontent.cpp https://invent.kde.org/system/dolphin/commit/6f632283d022aaf9d8e2bda81a5409aa36242d4d
Created attachment 146923 [details] screenshot as we can see in the attached screenshot, this bug persists. Operating System: Arch Linux KDE Plasma Version: 5.24.1 KDE Frameworks Version: 5.91.0 Qt Version: 5.15.2 Graphics Platform: X11
For X11 this is fixed For wayland this does not work but is a consequence/duplicate of https://bugs.kde.org/show_bug.cgi?id=446674
(In reply to Méven Car from comment #15) > For X11 this is fixed > I was wrong apparently, thank you Patrick.
Cannot reproduce on Plasma 6 RC2. Operating System: Arch Linux KDE Plasma Version: 5.93.0 KDE Frameworks Version: 5.249.0 Qt Version: 6.7.0 Graphics Platform: X11