With this series it's now possible to run and pass `user32:monitor` and `user32:sysparams` tests with nulldrv, and so most `user32` tests (except for a few desktop cursor position tests). This still requires some prefix configuration to enable the nulldrv driver, or a change like https://gitlab.winehq.org/rbernon/wine/-/commit/753368ad0ec52f03f8d6e78ca79… to enable it when `DISPLAY` environment variable is unset.
This then shows that some of the user32 tests are failing with winex11 but passing with nulldrv, as in https://gitlab.winehq.org/rbernon/wine/-/commit/6d5f4109a514a0dc266899fcacf….
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v5: win32u: Read mode from the registry if GetCurrentDisplaySettings fails.
win32u: Write display settings to the registry in apply_display_settings.
win32u: Lock display devices while applying display settings.
win32u: Force update display cache after NtUserChangeDisplaySettingsEx.
win32u: Introduce a new VirtualScreenRectChanged display driver callback.
win32u: Add a BOOL force parameter to update_display_cache.
https://gitlab.winehq.org/wine/wine/-/merge_requests/551