Fix user group addition in jessie_start.sh.

diff --git a/jessie_start.sh b/jessie_start.sh
index 6086cf79aa7130febc98fdb6409fe7c69944a498..781ef4314a21a85e9c781ea9f7038805ec35fe72 100755 (executable)
--- a/jessie_start.sh
+++ b/jessie_start.sh
@@ -99,7 +99,7 @@ apt-get -y install xserver-xorg xinit xterm i3 i3status dmenu
 # Set up OpenGL and hardware acceleration.
 apt-get -y install libgl1-mesa-dri
 apt-get -y install i965-va-driver
-usermod -G video plom
+usermod -aG video plom
 
 # Install xrandr.
 apt-get -y install x11-xserver-utils