Created attachment 161027 [details] Example of the issue SUMMARY When hovering an icon in the task bar, the preview window is shown but is blank STEPS TO REPRODUCE 1. Start a plasma wayland session 2. Open a program 3. Hover the icon of that program in the taskbar OBSERVED RESULT No window contents are shown in the preview window EXPECTED RESULT The contents of the window are shown in the preview window SOFTWARE/OS VERSIONS Linux/KDE Plasma: Artix linux (available in About System) KDE Plasma Version: 5.27.7 KDE Frameworks Version: 5.108.0 Qt Version: 5.15.0 ADDITIONAL INFORMATION The task switcher (accessed via alt+tab) instead properly shows the window previews.
Is it broken for 100% of windows 100% of the time? Or does it happen only sometimes?
(In reply to Nate Graham from comment #1) > Is it broken for 100% of windows 100% of the time? > > Or does it happen only sometimes? I never had it working since around plasma 5.23 (the bug I commented on earlier was the one I had found back then when searching for this problem) and has never worked since then. If it might be helpful, the system I'm having this issue on is an Acer nitro 5 with an i5-7300hq and 1050ti and I'm using the noveau drivers.
Never had it working, huh? Do you have `kpipewire` installed on your system?
(In reply to Nate Graham from comment #3) > Never had it working, huh? Do you have `kpipewire` installed on your system? Just checked and I do have it installed
Thanks for the info.
Works here with a rtx 3060; not sure why it wouldn't with a 1050. Please attach the output of drm_info
Not related to video card. I can reproduce on Arch Linux running Plasma 5.27.7 on intel iGPU by hovering over the tasks repeatedly.
Thumbnails never working and sometimes not showing are two different bugs
Created attachment 161202 [details] Output of drm_info
Created attachment 161245 [details] drm_info and wayland-info on secondairy intel machine I tested on a seaprate machine that only has the intel integrated graphigs using a debian 12 live image (shipping with kde 27.5), and I get a very similar result, the difference being that rather than being empty, the preview window only shows the window icon. So I guess the issue is not related to the noveau drivers but the intel ones. Attached are the outputs of both drm_info and wayland-info ran on that machine.
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!
(In reply to Bug Janitor Service from comment #11) > 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!
This happens on AMD (RX480) amdgpu driver on Debian 12, too.
This also reproduces on my system. Operating System: Arch Linux KDE Plasma Version: 5.27.8 KDE Frameworks Version: 5.110.0 Qt Version: 5.15.11 Kernel Version: 6.5.7-arch1-1 (64-bit) Graphics Platform: Wayland Processors: 32 × AMD Ryzen 9 7950X3D 16-Core Processor Memory: 62.5 GiB of RAM Graphics Processor: NVIDIA GeForce RTX 4090/PCIe/SSE2 Manufacturer: ASUS Nvidia: 535.113.01 When I hover over an item in the task manager, I see those logs in the user journal: ``` Oct 12 11:59:48 wave5 plasmashell[3314]: kpipewire_logging: PipeWire remote error: -2 unknown resource 3 op:4 Oct 12 11:59:48 wave5 plasmashell[3314]: kpipewire_logging: PipeWire remote error: -2 unknown resource 3 op:4 Oct 12 11:59:48 wave5 plasmashell[3314]: kpipewire_logging: PipeWire remote error: -2 unknown resource 3 op:4 Oct 12 11:59:48 wave5 plasmashell[3314]: kpipewire_logging: PipeWire remote error: -2 unknown resource 3 op:4 Oct 12 11:59:48 wave5 plasmashell[3314]: kpipewire_logging: PipeWire remote error: -2 unknown resource 3 op:7 Oct 12 11:59:48 wave5 pipewire[3453]: mod.client-node: 0x5619ad8323f0: unknown peer 0x5619ad8263c0 fd:59 Oct 12 11:59:48 wave5 pipewire[3453]: mod.client-node: 0x5619ad5e6a20: unknown peer 0x5619ad7ce990 fd:64 ```
I'm seeing the same behaviour (no window preview, just application icon on icon only task manager thumbnail) but slightly different error message: ott 26 15:46:42 localhost.localdomain pipewire[2454]: mod.protocol-native: 0x55f5777d8790: connection_data: client 0x55f57799d450 error -71 (Errore di protocollo) ott 26 15:46:42 localhost.localdomain kwin_wayland[6625]: kwin_screencast: PipeWire remote error: connection error ott 26 15:46:42 localhost.localdomain plasmashell[6807]: kpipewire_logging: Stream error: target not found ott 26 15:46:42 localhost.localdomain plasmashell[6807]: kpipewire_logging: PipeWire remote error: -2 target not found here's my system specs: Operating System: openSUSE Tumbleweed 20231023 KDE Plasma Version: 5.27.8 KDE Frameworks Version: 5.111.0 Qt Version: 5.15.11 Kernel Version: 6.5.8-1-default (64-bit) Graphics Platform: Wayland Processors: 12 × 12th Gen Intel® Core™ i5-1235U Memory: 15.3 GiB of RAM Graphics Processor: Mesa Intel® Graphics Manufacturer: HP Product Name: HP EliteBook 860 16 inch G9 Notebook PC
Latest opensuse tumbleweed update (or the subsequent restart of the plasma session) fixed it for me
(In reply to Francesco from comment #16) > Latest opensuse tumbleweed update (or the subsequent restart of the plasma > session) fixed it for me do you have any more details? wayland version, kde version?
Recent versions seems to have fixed it, tho now it broke on my desktop with an amd RX570
*** This bug has been marked as a duplicate of bug 477478 ***