When you get your monitor to show the correct resolution again, I would suggest that you never turn off your monitor, unless you also turn off your computer.  Instead, set your power management to put your monitor to sleep.
If you turn your monitor off while your system is still on, your system assumes that it has no monitors at all and when you turn the monitor back on it treats it like you are hot plugging a new display on your system and configures it from scratch, hence the changed resolution.  If your monitor is asleep, it will continue to tell your computer that it's still there so your random config changes won't happen.

If you want a way to suspend your monitor immediately, create an icon that runs this command:

xset dpms force standby

Alternatively you could hard code your monitor into the X11 settings so that it always knows it's there... but I wouldn't recommend that.

Brian Cluff

On 01/07/2016 09:41 PM, Michael Havens wrote:

I turned my computer off and went to watch tv. I turned my computer on about 2 hours later and the resolution had changed (I think). This has happened before and a restart would fix the problem... but not this time. So I open the control panel and go to 'monitors' and it is set to 640x480. I think one of those numbers should be 1080 but when I click the arrows to select another resolution nothing appears, just the option to choose 640x480. Any one know how tofix such a problem? I run ubuntu.

Maybe it has something to do with the dist-upgrade I did the last time I run the computer.

--

:-)~MIKE~(-:

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