I have been using a second monitor for a while now, and until I connected it to our TV via the VGA port everything went well.

Then, yesterday morning, after I unplugged the VGA cable from the TV and hooked it back on to the second monitor, I was surprised to see that the resolution was set to just 1024x768 rather than the 1680X1050 it should be.

Following the instructions I found at Screen resolution stuck at 1024x768, I managed to add a new resolution of 1366x768 however, the top icons are half off the screen, and the other icons on the second monitor are still huge. another problem at that resolution is that there is about a quarter of the screen not visible between the two monitors.

I tried adding 1680X1050 with xrandx but that told me xrandr: cannot find mode "1680x1050"

• The second monitor is a ViewSonic VA2016w


• Memory: 6 GiB


• Processor: Intel® Core™ i3-2350M CPU @ 2.30GHz × 4


• Graphics : Intel® Sandybridge Mobile - 2 GiB


• OS : Ubuntu 13.04 64-bit


• There are no proprietary drivers used, installed or offered.


• Modes now offered: 1024x768, 800x600 and 1366x768


• The resolution was 1680X1050 as shown here and the full data sheet here.

If anyone has any advicce or suggestions on how to sort this out, I'd be most appreciative.

Thanks in advance.

UPDATE

After rebooting, the resolutions were reset to Mirrored Display with the ViewSonic monitor set to 1024x768 (4:3) or 800x600 (4:3)

could not assign CRTCs to outputs: 

Trying modes for CRTC 63 

CRTC 63: trying mode 1366x768@60Hz with output at 1366x768@60Hz (pass 0) 

    none of the selected modes were compatible with the possible modes: 

Trying modes for CRTC 63 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 

Trying modes for CRTC 64 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 



CRTC 63: trying mode 1360x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 1360x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 1366x768@60Hz with output at 1366x768@60Hz (pass 1) 

    none of the selected modes were compatible with the possible modes: 

Trying modes for CRTC 63 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 

Trying modes for CRTC 64 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 



CRTC 63: trying mode 1360x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 1360x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 

Trying modes for CRTC 64 

CRTC 64: trying mode 1366x768@60Hz with output at 1366x768@60Hz (pass 0) 

    none of the selected modes were compatible with the possible modes: 

Trying modes for CRTC 63 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 

Trying modes for CRTC 64 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 



CRTC 64: trying mode 1360x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 1360x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 1366x768@60Hz with output at 1366x768@60Hz (pass 1) 

    none of the selected modes were compatible with the possible modes: 

Trying modes for CRTC 63 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 63: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 

Trying modes for CRTC 64 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 848x480@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) 



CRTC 64: trying mode 1360x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 1360x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 1024x768@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@60Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 800x600@56Hz with output at 1366x768@60Hz (pass 1) 

CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1)