Running LinuxMint Gloria. I shut down the computer last night, was working fine all day. This morning, when it boots, I get the splash screen fine but when it finishes booting, the monitor goes wacky, I see message: Invalid Scan Freq, and all I get is rolling lines and snow. This happened once before on a laptop when I would use a docking station (same monitor, btw). I have no idea what to do or what is causing this. This also happened once when I installed Redhat 10 but I just gave up on Redhat and went LinuxMint.