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-rw-r--r--gnu/services/xorg.scm1
1 files changed, 1 insertions, 0 deletions
diff --git a/gnu/services/xorg.scm b/gnu/services/xorg.scm
index a6dbec6957..e6f64b30c1 100644
--- a/gnu/services/xorg.scm
+++ b/gnu/services/xorg.scm
@@ -798,6 +798,7 @@ the GNOME desktop environment.")
         (user-account
          (name "gdm")
          (group "gdm")
+         (supplementary-groups '("video"))
          (system? #t)
          (comment "GNOME Display Manager user")
          (home-directory "/var/lib/gdm")