modesetting: Allow users to opt-in VRR support

Fetch VariableRefresh option value from X conf file for
modesetting backend DDX driver. This option defaults to false,
and must be set to "true" in conf file for variable refresh
support in the DDX driver.

Signed-off-by: Uday Kiran Pichika <>
4 jobs for window_wrappers in 4 minutes and 57 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Docker Image
passed debian-testing #4445634


  Build And Test
passed autotools #4445635


passed meson #4445636


passed meson-noglamor #4445637