Core dump when trying to share the screen

[Gleydar]

I'm getting a reproducible core dump when trying to share my screen via WebRTC with the following error message:

2022/02/15 11:27:02 [ERROR] - xdg-desktop-portal-wlr: failed to convert wl_shm format 0x34324742 to spa_video_format
[1]    19548 abort (core dumped)  /usr/lib/xdg-desktop-portal-wlr -r

Currently, I'm using manjaro with the -git version of the following packages:

sway-git - r6879.f707f583-1
wlroots-git - 0.16.0.r5365.252b2348-1
xdg-desktop-portal-wlr-git - v0.5.0.r24.gc34d098-1

All other packages are the most up to date normal versions.

[columbarius]

Just as a quick Note: the corresponding drm_format should be DRM_FORMAT_BGR888 fourcc_code('B', 'G', '2', '4') /* [23:0] B:G:R little endian */

Out of curiosity what gpu are you using?

Can you please test #191

[Gleydar]

I will test it asap, and give you feedback whether or not it solved the issue for me :)

I know I'll get a stern no-no, but I have a Nvidia GPU (believe me, trying to get wayland to work on it punishment in and of itself... 😢)

[Gleydar]

This fixes the crash, but not my screen sharing issues :D I will have to keep looking for the reason for those. Thanks for your really really quick help though!

[gl4eqen]

Nvidia GPU

In the same boat. Trying to look through the issues with sway + proprietary Nvidia drivers (510.54 currently). After applying the patch, crash goes away but pipewire seems very unhappy with the value it gets.

Mar 05 20:44:31 arch-i7-9700k pipewire[684]: pw.context: params Spa:Enum:ParamId:EnumFormat: 0:0 Invalid argument (input format (no more input formats))
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 288, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 12       (Spa:Enum:VideoFormat:BGRA)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:modifier (131074), flags 00000018
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Enum, flags 00000000 136 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099856
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099856
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099857
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099858
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099859
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099860
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099861
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496656
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496657
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496658
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496659
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496660
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496661
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 0
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 72057594037927935
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle -1x-1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 136, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 12       (Spa:Enum:VideoFormat:BGRA)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle -1x-1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 288, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 11       (Spa:Enum:VideoFormat:RGBA)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:modifier (131074), flags 00000018
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Enum, flags 00000000 136 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099856
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099856
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099857
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099858
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099859
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099860
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099861
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496656
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496657
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496658
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496659
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496660
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496661
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 0
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 72057594037927935
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle -1x-1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 136, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 11       (Spa:Enum:VideoFormat:RGBA)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle -1x-1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 288, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 8        (Spa:Enum:VideoFormat:BGRx)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:modifier (131074), flags 00000018
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Enum, flags 00000000 136 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099856
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099856
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099857
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099858
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099859
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099860
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099861
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496656
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496657
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496658
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496659
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496660
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496661
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 0
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 72057594037927935
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle -1x-1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 136, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 8        (Spa:Enum:VideoFormat:BGRx)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle -1x-1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 288, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 7        (Spa:Enum:VideoFormat:RGBx)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:modifier (131074), flags 00000018
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Enum, flags 00000000 136 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099856
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099856
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099857
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099858
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099859
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099860
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782120099861
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496656
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496657
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496658
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496659
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496660
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 216172782128496661
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 0
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Long 72057594037927935
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle -1x-1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 136, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 7        (Spa:Enum:VideoFormat:RGBx)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle 1x1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Rectangle -1x-1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: pw.context: params Spa:Enum:ParamId:EnumFormat: 1:0 Invalid argument (output format (no more input formats))
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default: Object: size 184, type Spa:Pod:Object:Param:Format (262147), id Spa:Enum:ParamId:EnumFormat (3)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaType (1), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 2        (Spa:Enum:MediaType:video)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:mediaSubtype (2), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 1        (Spa:Enum:MediaSubtype:raw)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:format (131073), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Id 15       (Spa:Enum:VideoFormat:RGB)
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:size (131075), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Rectangle 2560x1440
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:framerate (131076), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Fraction 0/1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:   Prop: key Spa:Pod:Object:Param:Format:Video:maxFramerate (131077), flags 00000000
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:     Choice: type Spa:Enum:Choice:Range, flags 00000000 40 8
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Fraction 144/1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Fraction 1/1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: default:       Fraction 144/1
Mar 05 20:44:31 arch-i7-9700k pipewire[684]: pw.link: (68.0 -> 45.0) negotiating -> error (no more input formats)

For testing I'm just using Screen Capture API test. I'm rocking very similar setup on my laptop with AMD GPU and it works fine there. Probably a lot of rough edges in case of Nvidia driver.

[columbarius]

I know I'll get a stern no-no, but I have a Nvidia GPU

I'd just asked, because different gpus and setups make specific errors more likely.

I don't mind adding support for a format since this isn't only applicable to one vendor.
If I read the log correctly your problem is that the client connecting to xdpw doesn't support BGR buffers. PipeWire doesn't offer any format conversion and as such the negotiation process fails.

• The browsers (webrtc) only support a limited amount of formats and it looks like BGR is not supported.
• You could try obs since it has support for more formats, but no guarantees. (No obs doesn't support BGR)
• You could create a gstreamer pipeline and add it in between via the pw-cli or another tool, but that is really hacky.

If you can report that this MR works with a client we will consider merging it.

@glaeqen btw. are you using #152 ?

[gl4eqen]

@columbarius

@glaeqen btw. are you using #152 ?

I tried it now, the only difference in logs against what I posted is more less this (left side is with #152 patch):

1d0
< arch-i7-9700k wireplumber <WpPortalPermissionStorePlugin:0x562e71aba0e0> Failed to call Lookup: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for camera
174c173
< arch-i7-9700k pipewire default:     Id 9        (Spa:Enum:VideoFormat:xRGB)
---
> arch-i7-9700k pipewire default:     Id 15       (Spa:Enum:VideoFormat:RGB)
184c183
< arch-i7-9700k pipewire pw.link: (64.0 -> 65.0) negotiating -> error (no more input formats)
---
> arch-i7-9700k pipewire pw.link: (68.0 -> 45.0) negotiating -> error (no more input formats)

[gl4eqen]

Is there any way I can help with moving this issue forward? :)

[columbarius]

If I remember correctly there is not much from our side to do: We can merge #191 but your problem is that this format is not supported by the other end. PipeWire currently doesn't do video format conversion and so the negotiation fails and no link is established. So you might want to open a bug request for libwebrtc.

[gl4eqen]

@columbarius libwebrtc is used both by Firefox and Chrome? Sorry, I don't fully follow the separation of concerns in the xdg-portal/pipewire ecosystem.

[columbarius]

Both use libwebtrc but it's not shared between Firefox and Chromium. They both ship their own version with small integration changes and different versions.

[grulja]

Both use libwebtrc but it's not shared between Firefox and Chromium. They both ship their own version with small integration changes and different versions.

It is shared, just Firefox doesn't keep up so they carry a year old copy of WebRTC, but once Firefox does a rebase they will be again on par with screen sharing support.

I also have Nvidia driver (v510) and screen sharing works for me in both KDE and GNOME (these are the ones I test my code with). I'm also not sure adding support for BGR will help here as WebRTC uses only BGRA, BGRx, RGBA, RGBx.

[gl4eqen]

I also have Nvidia driver (v510) and screen sharing works for me in both KDE and GNOME (these are the ones I test my code with)

So only with wlroots based wayland compositors there are issues, am I getting you right?

[columbarius]

@grulja

Both use libwebtrc but it's not shared between Firefox and Chromium. They both ship their own version with small integration changes and different versions.

It is shared, just Firefox doesn't keep up so they carry a year old copy of WebRTC, but once Firefox does a rebase they will be again on par with screen sharing support.

Right: I meant not shared in not using the same shared library.

I also have Nvidia driver (v510) and screen sharing works for me in both KDE and GNOME (these are the ones I test my code with). I'm also not sure adding support for BGR will help here as WebRTC uses only BGRA, BGRx, RGBA, RGBx.

Great to hear. May I ask you for your distro and if you could test OBS from flathub-beta?

[columbarius]

@Gleydar Then your best bet is to look if wlroots/sway has the option to force a format. xdpw only supports the format used by wlroots for the surface which is recorded.