Since 2.18.0 Frame fails to enforce fullscreen on wpe-webkit-mir-kiosk

[AlanGriffiths]

24/candidate: 197-mir2.18.0

$ WAYLAND_DISPLAY=wayland-99 WAYLAND_DEBUG=client wpe-webkit-mir-kiosk.cog 2>&1 | grep -e xdg_toplevel.*configure -e xdg_toplevel.*size -e create_buffer
[3455836.499] [email protected](0, 0, array[0])
[3455836.537] [email protected](0, 0, array[0])
[3455836.552] [email protected](1292, 1054, array[4])
[3455953.107] [email protected](0, 0, array[8])
...

24/stable: 152-mir2.17.0

$ WAYLAND_DISPLAY=wayland-99 WAYLAND_DEBUG=client wpe-webkit-mir-kiosk.cog 2>&1 | grep -e xdg_toplevel.*configure -e xdg_toplevel.*size -e create_buffer
[3582358.284] [email protected](0, 0, array[0])
[3582358.310] [email protected](0, 0, array[0])
[3582358.316] [email protected](1280, 1024, array[4])
[3582477.192] [email protected](1280, 1024, array[8])
...

[AlanGriffiths]

This can be easily reproduced with the "kiosk" example...

miral-app -kiosk -terminal wpe-webkit-mir-kiosk.cog

And reverting #3575 does fix this problem

[AlanGriffiths]

Here's a more detailed log...

$ WAYLAND_DISPLAY=wayland-99 WAYLAND_DEBUG=client wpe-webkit-mir-kiosk.cog 2>&1 | grep -e xdg_toplevel@.* -e xdg_surface@.* -e create_buffer.* -e zwp_linux_buffer_params_v1.*create_immed.*
[ 708945.059]  -> [email protected]_xdg_surface(new id xdg_surface@16, wl_surface@15)
[ 708945.064]  -> [email protected]_toplevel(new id xdg_toplevel@17)
[ 708945.067]  -> [email protected]_title("Cog")
[ 708945.077]  -> [email protected]_app_id("com.igalia.Cog")
[ 708953.263] [email protected](0, 0, array[0])
[ 708953.291] [email protected](103)
[ 708953.294]  -> [email protected]_configure(103)
[ 708953.297] [email protected](0, 0, array[0])
[ 708953.301] [email protected](104)
[ 708953.303]  -> [email protected]_configure(104)
[ 708953.304] [email protected](1280, 1024, array[4])
[ 708953.323] [email protected](105)
[ 708953.325]  -> [email protected]_configure(105)
[ 709066.756]  -> [email protected]_immed(new id wl_buffer@16, 1024, 768, 875713089, 0)
[ 709066.908]  -> [email protected]_immed(new id wl_buffer@23, 1024, 768, 875713089, 0)
[ 709067.409] [email protected](0, 0, array[8])
[ 709067.417] [email protected](106)
[ 709067.419]  -> [email protected]_configure(106)
[ 709080.961]  -> [email protected]_immed(new id wl_buffer@17, 1280, 1024, 875713089, 0)
[ 709082.457]  -> [email protected]_immed(new id wl_buffer@22, 1280, 1024, 875713089, 0)
[ 709121.864]  -> [email protected]_immed(new id wl_buffer@18, 1024, 768, 875713089, 0)
[ 709122.108]  -> [email protected]_immed(new id wl_buffer@24, 1024, 768, 875713089, 0)
[ 709174.703]  -> [email protected]_immed(new id wl_buffer@16, 1024, 768, 875713089, 0)
[ 709174.921]  -> [email protected]_immed(new id wl_buffer@25, 1024, 768, 875713089, 0)
[ 709227.735]  -> [email protected]_immed(new id wl_buffer@26, 1024, 768, 875713089, 0)
[ 709303.365]  -> [email protected]_immed(new id wl_buffer@23, 1024, 768, 875713089, 0)
[ 709374.968]  -> [email protected]_immed(new id wl_buffer@22, 1024, 768, 875713089, 0)
[ 709448.825]  -> [email protected]_immed(new id wl_buffer@24, 1024, 768, 875713089, 0)
[ 709528.511]  -> [email protected]_immed(new id wl_buffer@25, 1024, 768, 875713089, 0)
[ 709597.492]  -> [email protected]_immed(new id wl_buffer@26, 1024, 768, 875713089, 0)
[ 709672.010]  -> [email protected]_immed(new id wl_buffer@23, 1024, 768, 875713089, 0)
[ 709745.729]  -> [email protected]_immed(new id wl_buffer@22, 1024, 768, 875713089, 0)
[ 709879.160]  -> [email protected]_immed(new id wl_buffer@24, 1024, 768, 875713089, 0)
[ 709913.551]  -> [email protected]_immed(new id wl_buffer@25, 1024, 768, 875713089, 0)

Note that WPE does send a couple of correctly sized buffers before reverting to a wrong size

[Saviq]

Another symptom of this is https://github.com/canonical/iot-example-graphical-snap/tree/22/Electron-quick-start dying on startup in miral-kiosk / Frame.