SUMMARY Window thumbnails don't work for me, tested on Wayland. STEPS TO REPRODUCE 1. Open applications 2. Hover over them to get the thumbnail OBSERVED RESULT No thumbnail is displayed EXPECTED RESULT A thumbnail is displayed SOFTWARE/OS VERSIONS Operating System: Manjaro Linux KDE Plasma Version: 5.20.0 KDE Frameworks Version: 5.75.0 Qt Version: 5.15.1 Kernel Version: 5.8.14-1-MANJARO OS Type: 64-bit Processors: 4 × Intel® Xeon® CPU E3-1225 v3 @ 3.20GHz Memory: 11.6 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics P4600/P4700 ADDITIONAL INFORMATION I think I read somewhere that this bug has been recently fixed (with 5.20?), but could not find a bug report for it, so might be mistaken.
Created attachment 132437 [details] Screenshot of the problem
I've just tested this on KDE Neon Unstable wayland session and I cannot reproduce. Is it any particular windows or all of them. Can you please test and confirm if this issue is still occurring or if this bug report can be marked as resolved, thanks.
Thanks for getting back. It seems to happen for all windows, at least I did not experience any instance where it was working. What I can confirm is that when I tested it on KDE Neon unstable in a VM it worked. However, if I recall correctly, it does not work on a compiled session from master. Maybe the problem is specific to my distribution (lacking required packages?). I am happy for advice to further track the reasons of this down. Window thumbnails appear to work fine for the task switcher (Alt + Tab).
(In reply to Claudius Ellsel from comment #3) > Thanks for getting back. > > It seems to happen for all windows, at least I did not experience any > instance where it was working. > > What I can confirm is that when I tested it on KDE Neon unstable in a VM it > worked. However, if I recall correctly, it does not work on a compiled > session from master. > > Maybe the problem is specific to my distribution (lacking required > packages?). > > I am happy for advice to further track the reasons of this down. > > Window thumbnails appear to work fine for the task switcher (Alt + Tab). I'm wondering if it's something Manjaro related as I've just downloaded and booted the Manjaro KDE ISO (latest) in a virtual machine and it won't show the thumbnails either.
Interesting. Thanks for testing. I'll mark this bug as confirmed, since you could reproduce. Additionally I'll add Vlad to CC, maybe he has an idea what could cause this.
I can confirm the issue on Gentoo with plasma 5.20.3 / mesa 20.1.10. It is always reproducible (no matter of qt, gtk, xwayland). Operating System: Gentoo Linux KDE Plasma Version: 5.20.3 KDE Frameworks Version: 5.76.0 Qt Version: 5.15.2 Kernel Version: 5.9.11-gentoo OS Type: 64-bit Processors: 8 × Intel® Core™ i7-4810MQ CPU @ 2.80GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics 4600
upgrading to mesa 20.2.3 did not change anything possible duplicate reports: Bug 428284 - Window thumbnails don't work without EXT_image_dma_buf_import Bug 429785 - Window thumbnail images are invisible on Wayland
*** Bug 429785 has been marked as a duplicate of this bug. ***
Still happening on the current Plasma Beta. I think this is only happening on Wayland (on Tumbleweed). Sometimes it seems to work however after waiting a second or two. Also, I noticed an interesting detail: Thumbnails are often not displayed while the mouse is over the hover card. But as soon as it moves on top of the corresponding window, the thumbnail is displayed. This is a pretty weird behavior. Maybe some security thing where thumbnails can only be taken from an "active" window?
Things seem to work fine on X11, so setting Wayland keyword.
Can reproduce. find /etc/pipewire/ /etc/pipewire/ /etc/pipewire/pipewire.conf /etc/pipewire/jack.conf /etc/pipewire/media-session.d /etc/pipewire/media-session.d/v4l2-monitor.conf /etc/pipewire/media-session.d/bluez-monitor.conf /etc/pipewire/media-session.d/media-session.conf /etc/pipewire/media-session.d/alsa-monitor.conf /etc/pipewire/client-rt.conf /etc/pipewire/client.conf /etc/pipewire/pipewire-pulse.conf
I can't reproduce this on Fedora 34, with Plasma 5.21.4. (In reply to Nate Graham from comment #11) Also, > find /etc/pipewire/ > /etc/pipewire/ > /etc/pipewire/pipewire.conf > /etc/pipewire/jack.conf > /etc/pipewire/media-session.d > /etc/pipewire/media-session.d/v4l2-monitor.conf > /etc/pipewire/media-session.d/bluez-monitor.conf > /etc/pipewire/media-session.d/media-session.conf > /etc/pipewire/media-session.d/alsa-monitor.conf > /etc/pipewire/client-rt.conf > /etc/pipewire/client.conf > /etc/pipewire/pipewire-pulse.conf Am I missing something? I don't really understand what this part of the comment is for...
Created attachment 137573 [details] Konsoles without preview I can reproduce with grouped Konsoles. Operating System: KDE neon Unstable Edition KDE Plasma Version: 5.21.80 KDE Frameworks Version: 5.82.0 Qt Version: 5.15.2 Graphics Platform: Wayland
*** Bug 435719 has been marked as a duplicate of this bug. ***
*** Bug 436039 has been marked as a duplicate of this bug. ***
*** Bug 428355 has been marked as a duplicate of this bug. ***
*** Bug 429568 has been marked as a duplicate of this bug. ***
Same here on ArchLinux. journalctl reads "plasmashell[2110]: kf.plasma.quick: Couldn't create KWindowShadow to ToolTipDialog(0x55b410d4e310)"
Please confirm this happens in 5.22
Still exists in 5.21.90 journalctl /usr/bin/plasmashell report while hovering over icon: Jun 03 13:33:29 myarch plasmashell[785]: kf.plasma.quick: Couldn't create KWindowShadow for ToolTipDialog(0x55f747baaa90) To reproduce: Select "Display Informational tooltips on mouse hover" in System settings > workspace behaviour > general behaviour Additional: The bug doesn't appear while using Xorg. In the firefox case, a tooltip can be seen if a video is opened in the tab. System info: Operating System: Arch Linux KDE Plasma Version: 5.21.90 KDE Frameworks Version: 5.82.0 Qt Version: 5.15.2 Kernel Version: 5.12.8-arch1-1 (64-bit) Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 3600 6-Core Processor Memory: 31,4 GiB of RAM Graphics Processor: AMD Radeon RX 5700 XT GPU driver:mesa-21.1.1-1
In my case, the upgrade from 5.21 to 5.22 made it go from "thumbnails never showing" to "thumbnails showing but sometimes stop working".
Problem still ongoing here on Arch with KDE 5.22
Can confirm this with git master everything on Fedora 34 with PipeWire.
Can confirm on Arch Linux Wayland, with Plasma 5.22.4-1.
Update on the issue. I was getting obs to work on kde wayland, and for that i needed to install wlroots and xdg-desktop-portal-wlr. After a restart, i got window thumbnails. Basically, getting obs studio to screen record in wayland solved the issue for me
I had the issue too, and just like sk.griffinix, it was fixed by trying to get OBS to work. In my case, it was fixed by installing pipewire-media-session. I'm on Manjaro KDE, testing branch.
I just undertook to install pipewire-media-session as per the previous comment and... it works! Running Arch, Plasma 5.22.4.
Sounds good. Please reopen if there are issues in 5.23.0 with a new bug report.
Created attachment 141690 [details] Plasma 5.23 beta previews of grouped apps are still not displayed sometimes. Operating System: Arch Linux KDE Plasma Version: 5.22.90 KDE Frameworks Version: 5.86.0 Qt Version: 5.15.2 Graphics Platform: Wayland
Still does not work for me with Plasma 5.23. Pipewires Media Session files are installed. $ equery files pipewire | grep media-session /usr/bin/pipewire-media-session /usr/lib/debug/usr/bin/pipewire-media-session.debug /usr/lib/systemd/user/pipewire-media-session.service /usr/share/pipewire/media-session.d /usr/share/pipewire/media-session.d/alsa-monitor.conf /usr/share/pipewire/media-session.d/bluez-hardware.conf /usr/share/pipewire/media-session.d/bluez-monitor.conf /usr/share/pipewire/media-session.d/media-session.conf /usr/share/pipewire/media-session.d/v4l2-monitor.conf /usr/share/pipewire/media-session.d/with-jack /usr/share/pipewire/media-session.d/with-pulseaudio Operating System: Gentoo Linux KDE Plasma Version: 5.23.0 KDE Frameworks Version: 5.87.0 Qt Version: 5.15.2 Kernel Version: 5.14.10-gentoo (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i7-4810MQ CPU @ 2.80GHz Memory: 15.5 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics 4600
(In reply to David Edmundson from comment #28) > Sounds good. Please reopen if there are issues in 5.23.0 with a new bug > report. Just saw, that I should have opened a new bugreport. Thus, I opened Bug 443719 and closed this one again. Sry for the noise.