system won't sleep/suspend when laptop lid closed

[bonedome]

Hello
as the title suggests, since the latest kernel 3.10.0-862.11.6.el7.x86_64 when I shut the lid the screen stays on and the laptop is still active, it's a dell e6420 any other info required just ask.
I've tried editing /etc/systemd/logind.conf to uncomment the two lines

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HandleSuspendKey=suspend
HandleLidSwitch=suspend

then

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systemctl restart systemd-logind.service

which works on previous kernel but not the latest
Anyone know a way to make it sleep/suspend when the lid's closed.