508892 2025-08-29 10:42:52 +0000 Pipewire error log flood under Wayland 2026-04-01 17:53:25 +0000 1 1 3 Frameworks and Libraries KPipeWire general 6.3.6 Other Linux RESOLVED UNMAINTAINED https://bugs.kde.org/show_bug.cgi?id=478309 https://bugs.kde.org/show_bug.cgi?id=493570 efficiency-and-performance, regression NOR normal --- 1 alerikaisattera plasma-bugs-null aleixpol kdedev nate 0 oldest_to_newest 2451304 0 alerikaisattera 2025-08-29 10:42:52 +0000 SUMMARY System log is flooded with Pipewire errors when running a KDE Wayland session STEPS TO REPRODUCE 1. Run a KDE Wayland session OBSERVED RESULT System log is flooded with Pipewire error messages EXPECTED RESULT No log flood SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Plasma Version: 6.3.6 KDE Frameworks Version: 6.17.0 Qt Version: 6.9.1 ADDITIONAL INFORMATION Errors look like this: ``` Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: params Spa:Enum:ParamId:EnumFormat: 0:0 Invalid argument (input format (no more input formats)) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Object: size 336, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Id 2 (Spa:Enum:MediaType:video) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Id 1 (Spa:Enum:MediaSubtype:raw) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Id 10 (Spa:Enum:VideoFormat:xBGR) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Rectangle 1x1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Rectangle 1x1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Rectangle 4294967295x4294967295 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:Video:framerate (131076), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Fraction 0/1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Fraction 0/1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Fraction 1200/1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:Video:modifier (131074), flags 00000018 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Choice: type Spa:Enum:Choice:Enum, flags 00000000 128 8 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782120099856 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782120099856 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782120099857 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782120099858 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782120099859 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782120099860 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782120099861 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782128496656 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782128496657 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782128496658 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782128496659 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782128496660 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 216172782128496661 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Long 72057594037927935 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Object: size 192, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Id 2 (Spa:Enum:MediaType:video) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Id 1 (Spa:Enum:MediaSubtype:raw) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Id 10 (Spa:Enum:VideoFormat:xBGR) Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Rectangle 1x1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Rectangle 1x1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Rectangle 4294967295x4294967295 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Prop: key Spa:Pod:Object:Param:Format:Video:framerate (131076), flags 00000000 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Fraction 0/1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Fraction 0/1 Aug 29 16:35:02 aleri-pc pipewire[1226]: pw.context: Fraction 1200/1 ``` A few warnings also appear: ``` Aug 29 16:35:42 aleri-pc plasmashell[1309]: kpipewire_logging: PipeWire remote error: -2 unknown resource 4 op:4 Aug 29 16:35:42 aleri-pc plasmashell[1309]: kpipewire_logging: PipeWire remote error: -2 unknown resource 4 op:7 ``` 2451541 1 alerikaisattera 2025-08-30 18:25:53 +0000 Might be related or not, but at some point Pipewire started using 100% of 1 CPU core 2452287 2 kdedev 2025-09-03 20:33:32 +0000 This looks a lot like bug 478309, which had a fix merged in 6.0 Are you seeing any symptoms in the UI, aside from the high CPU usage? In the previous report, content preview windows from the task manager were empty Sending to KPipeWire 2452342 3 alerikaisattera 2025-09-04 06:07:53 +0000 There are no obvious problem in UI, but screen recording software, which supposedly requires Pipewire under Wayland, does not work 2452562 4 kdedev 2025-09-04 18:12:10 +0000 Thanks, that's helpful information. I'll let those more familiar with the pipewire integration take it from here. 2460608 5 alerikaisattera 2025-10-09 09:55:54 +0000 This doesn't happen anymore. Either it has been fixed or was caused by misconfiguration 2505717 6 alerikaisattera 2026-03-24 07:51:11 +0000 Happens once again on Plasma 6.5.5, but without any effect on screen recording 2507468 7 kdedev 2026-04-01 17:53:25 +0000 (In reply to alerikaisattera from comment #6) > Happens once again on Plasma 6.5.5, but without any effect on screen > recording Unfortunately, Plasma 6.5.5 is no longer maintained by KDE. You might try seeing if there are codecs available from your distro that aren't installed. I found another report with the same pipewire errors - bug 493570 If you have an NVIDIA GPU, you can try what worked for that person, which was to remove environment variables GBM_BACKEND=nvidia-drm __GLX_VENDOR_LIBRARY_NAME=nvidia __NV_PRIME_RENDER_OFFLOAD=1 If you need further advice or support for the version of Plasma you have installed, please contact your distribution, who bears the responsibility of providing help for older releases that are no longer receiving updates from KDE. If this issue is still reproducible in Plasma 6.6.3 or later, feel free to re-open this bug report. Thanks for understanding.