Issue launching gamescope/steamos-session with HDR enabled using latest commits.

[isaboll1]

Hello. Ever since using gamescope with the changes introduced in the new-color-toys branch, i've found that gamescope consistently fails to load when attempting to start a SteamOS session, either through Tty2, or on startup with a dedicated session through gamescope-session. I updated to the latest kernel supplied through the linux-hdr kernel pkgbuild prior to attempting to use gamescope updated as well.

The error that appears in the log when launching is xwm: We failed our modeset and have no mode to fall back to! (Initial modeset failed?): Invalid argument. The last working commit on my end is 1310315

gamescope-stdout.log
modes.cfg.txt
patched_edid.bin.zip

[isaboll1]

As an update, it appears using the launch option --disable-color-management allows gamescope to be used with HDR monitors and not crash. It likely could be that the methods for acquiring MDR metadata from the monitor, might run into issues depending on the edid of the monitor, causing gamescope to crash.