hi all,

i am trying to fathom what hung me out to dry trying to
evaluate resolution options for  my F34/hdtv.

entering display settings, looking at the list of possible resolutions,
there are several.

many of those options, if selected yields 'invalid format' !

while xrandr looks at resolutions and displays options for x11.

what is the wayland to evaluate resolution format?

wayland-info provides:

interface: 'wl_drm',                                     version:  2, name:  1
interface: 'wl_compositor',                              version:  4, name:  2
interface: 'wl_shm',                                     version:  1, name:  3
formats: 'XB4H'(0x48344258) 'AB4H'(0x48344241) 'XR4H'(0x48345258) 'AR4H'(0x48345241) 'XB30'(0x30334258) 'AB30'(0x30334241) 'XR30'(0x30335258) 'AR30'(0x30335241) RGB565 XRGB8888 ARGB8888
interface: 'wl_output',                                  version:  2, name:  4
x: 0, y: 0, scale: 1,
physical_width: 1600 mm, physical_height: 900 mm,
make: 'GSM', model: 'LG TV',
subpixel_orientation: unknown, output_transform: normal,
mode:
width: 3840 px, height: 2160 px, refresh: 30.000 Hz,
flags: current
interface: 'zxdg_output_manager_v1',                     version:  3, name:  5
xdg_output_v1
output: 4
name: 'HDMI-3'
description: 'LG Electronics LG TV'
logical_x: 0, logical_y: 0
logical_width: 3840, logical_height: 2160
interface: 'wl_data_device_manager',                     version:  3, name:  6
interface: 'zwp_primary_selection_device_manager_v1',    version:  1, name:  7
interface: 'gtk_primary_selection_device_manager',       version:  1, name:  8
interface: 'wl_subcompositor',                           version:  1, name:  9
interface: 'xdg_wm_base',                                version:  3, name: 10
interface: 'zxdg_shell_v6',                              version:  1, name: 11
interface: 'wl_shell',                                   version:  1, name: 12
interface: 'gtk_shell1',                                 version:  4, name: 13
interface: 'wp_viewporter',                              version:  1, name: 14
interface: 'zwp_pointer_gestures_v1',                    version:  1, name: 15
interface: 'zwp_tablet_manager_v2',                      version:  1, name: 16
interface: 'wl_seat',                                    version:  5, name: 17
name: seat0
capabilities: pointer keyboard
keyboard repeat rate: 33
keyboard repeat delay: 500
interface: 'zwp_relative_pointer_manager_v1',            version:  1, name: 18
interface: 'zwp_pointer_constraints_v1',                 version:  1, name: 19
interface: 'zxdg_exporter_v1',                           version:  1, name: 20
interface: 'zxdg_importer_v1',                           version:  1, name: 21
interface: 'zwp_linux_dmabuf_v1',                        version:  3, name: 22
formats:
'AR4H'(0x48345241), modifier: 0x00ffffffffffffff
'XR4H'(0x48345258), modifier: 0x00ffffffffffffff
'XB4H'(0x48344258), modifier: 0x00ffffffffffffff
'AB4H'(0x48344241), modifier: 0x00ffffffffffffff
'RG16'(0x36314752), modifier: 0x00ffffffffffffff
'XR30'(0x30335258), modifier: 0x00ffffffffffffff
'AB30'(0x30334241), modifier: 0x00ffffffffffffff
'AR30'(0x30335241), modifier: 0x00ffffffffffffff
'XB24'(0x34324258), modifier: 0x00ffffffffffffff
'XR24'(0x34325258), modifier: 0x00ffffffffffffff
'AB24'(0x34324241), modifier: 0x00ffffffffffffff
'AR24'(0x34325241), modifier: 0x00ffffffffffffff
interface: 'zwp_keyboard_shortcuts_inhibit_manager_v1',  version:  1, name: 23
interface: 'zwp_text_input_manager_v3',                  version:  1, name: 24
interface: 'gtk_text_input_manager',                     version:  1, name: 25
interface: 'wp_presentation',                            version:  1, name: 26
presentation clock id: 1 (CLOCK_MONOTONIC)

jonathan kindly pointed me to  ~/.config/monitor.xml

hacking this file fixed my error msg, but does not explain what's wrong.

any additional insight out there??

tia, jackc...