[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 Maik Qualmann changed: What|Removed |Added Version Fixed In||7.2.0 Latest Commit|

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 graeme.rub...@gmail.com changed: What|Removed |Added CC||graeme.rub...@gmail.com -- You are

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 caulier.gil...@gmail.com changed: What|Removed |Added Version|5.4.0 |4.12.0 -- You are receiving this

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #30 from Kristian Karl --- I can confirm, that the issue still exists. I tried using digikam-6.1.0-git-20190321T102236-x86-64.appimage If there's anything I can do, to try to pin-point the problem, I'm happy to help out. -- You are

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #29 from caulier.gil...@gmail.com --- After 3 weeks of work, i finally completed the compilation of AppImage using Qt 5.11.3 + QWebkit 5.212. New 6.1.0 pre-release AppImage bundle can be found here (64 bits only for the moment) :

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #28 from Kristian Karl --- Complete printout of information regarding the VM machine $ VBoxManage showvminfo "Kubuntu 18.04" Name:Kubuntu 18.04 Groups: / Guest OS:Ubuntu (64-bit) UUID:

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #27 from Kristian Karl --- System === Processors: 1 CPU Base memory: 4610 MB Acceleration: VT-x/AMD-V, Nested Paging, KVM Paravirtualization Display === Video memory: 33 MB Acceleration: 3D -- You are receiving this mail because:

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #26 from caulier.gil...@gmail.com --- ok, What's about the cores assigned to the VM ? Same for the system memory and the video memory. This is important because it can influence to the rendering performances. Gilles Caulier -- You are

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #25 from Kristian Karl --- With 3D Acceleration enabled, I still get flickering on my VirtualBox installation, I'm afraid. -- You are receiving this mail because: You are watching all bug changes.

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #24 from caulier.gil...@gmail.com --- Well, try again with this option... Gilles Caulier -- You are receiving this mail because: You are watching all bug changes.

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #23 from Kristian Karl --- No. 3D Acceleration was disabled. -- You are receiving this mail because: You are watching all bug changes.

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #22 from caulier.gil...@gmail.com --- In virtualbox, did you enable 3D support (openGL) Gilles Caulier -- You are receiving this mail because: You are watching all bug changes.

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #21 from Kristian Karl --- I tested the latest appimage of Digikam (digikam-5.9.0-01-x86-64.appimage) on the latest KUbuntu (18-04.1) version on Virtualbox. 1) I used images from http://cswww.essex.ac.uk/mv/allfaces/faces94.html

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #20 from caulier.gil...@gmail.com --- Another way to experiment : In appimage, we use Qt 5.9.6 LTS. Perhaps a major update to Qt 5.11.x can solve this problem. Gilles Caulier -- You are receiving this mail because: You are watching all

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #19 from Kristian Karl --- Maybe a long shot, but could maybe this method be involved somehow? https://github.com/KDE/digikam/blob/c013f88088bf08e321e4da8be71a61b02b67af2c/core/libs/widgets/itemview/dcategorizedview.cpp#L70-L132 I'll add

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #18 from Kristian Karl --- I think that maybe the resolution might be involved somehow. If I use may 2560x1440, I don't get any flickering. When I use 3840x2160, I do get flickering. Please note, that the digikam window is maximized in

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #17 from Kristian Karl --- I use x11 echo $XDG_SESSION_TYPE x11 -- You are receiving this mail because: You are watching all bug changes.

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #16 from caulier.gil...@gmail.com --- Do you use X11 or Wayland ? I never tested AppImage with Wayland, and think it must miss some piece of Qt plugins in the bundle. Gilles Caulier -- You are receiving this mail because: You are

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #15 from Kristian Karl --- Oh sorry! Desktop: KDE Neon (Plasma 5.13.4,KDE frameworks 5.49.0, Qt 5.11.1 ) on Ubuntu 18.04 Display manager and extension: cat /etc/X11/default-display-manager /usr/bin/sddm Graphics card and driver?

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #14 from Maik Qualmann --- That's right, the thumbnails are "preloaded" by the Paint Event. The thumbnail task will send a signal to the image model that the thumbnail is available and it will be drawn. By you over and over again. The

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #13 from Kristian Karl --- Some more details observed while debugging. It seems like ThumbnailLoadingTask is getting called repeatably during flicker: libdigikamcore.so.6.0.0!Digikam::ThumbnailCreator::loadDetail(const

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #12 from Kristian Karl --- When debugging this morning, I paused during flicker, and paused execution. Every time I paused , the stack trace for Digikam code started at:

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #11 from Kristian Karl --- Absolutely! I'll try some debugging of my own in the meantime. I got a dual screen setup to hel me debug now. -- You are receiving this mail because: You are watching all bug changes.

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #10 from Maik Qualmann --- The first thing that is strange is that you constantly have a paint event. As I said, usually only when the mouse pointer or a window moves in front of it or the view is scrolled. The second question is where the

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #9 from Kristian Karl --- I tested this on a different 4k screen, and I get the same problem. Using the latest from git: 0890e2005cae874dd1fcf71c2d3642152c00eff0, digikam produces the following on the terminal during this flickering : :

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 Maik Qualmann changed: What|Removed |Added CC||metzping...@gmail.com --- Comment #8 from Maik

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #7 from caulier.gil...@gmail.com --- The AppImage Linux Bundle have been recompiled with last changes from source code and is available here for testing : https://files.kde.org/digikam/ Take a care : 6.0.0 is a beta release for the moment.

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #6 from Kristian Karl --- I have seen this problem on 2 different 4K screens. One connected to my midtower machine. And last, my laptop Lenovo Thinkpad X240 connected using Display Port to a BenQ BL3201PT

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #5 from caulier.gil...@gmail.com --- Here, i tried with digiKam 5.7.0 + Qt 5.9. + KF5 5.35, and OpenCV 3.1.0 with a 4K monitor under Mageia6. I cannot reproduce the problem. Which screen resolution do you use exactly ? Gilles Caulier --

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #4 from Kristian Karl --- The flickering still exists digikam 5.7.0, installed from neon CI repository: aptitude show digikam Package: digikam

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 caulier.gil...@gmail.com changed: What|Removed |Added Platform|Other |Appimage -- You are receiving this

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 caulier.gil...@gmail.com changed: What|Removed |Added Version|5.3.0 |5.4.0 -- You are receiving this

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #3 from Kristian Karl --- Yes, I could reproduce the problem on the pre-release 5.4.0 AppImage. -- You are receiving this mail because: You are watching all bug changes.

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 caulier.gil...@gmail.com changed: What|Removed |Added CC||caulier.gil...@gmail.com

[digikam] [Bug 373839] Continuously face thumbnails flicker/update

https://bugs.kde.org/show_bug.cgi?id=373839 --- Comment #1 from Kristian Karl --- I noticed this first, when using a maximized Digikam window on a 4K monitor, where enough faces/thumbnails were rendered to cause the flickering. Reducing the size of the Digikam