![]() VGA uses analog transmission, so an LCD connected to VGA has a A/D converter to convert the pixel information back to digital. Possibly you can configure your window manager to always ignore this area. It means your desktop will have two pixels at the right that are not visible (and I don't know any way to convince X that the actual framebuffer is smaller). So in your case, I'd just choose to the 1368 horizontal resolution. That means it doesn't really matter that the last two pixels of the 1368 range are not displayed, the card will send an additional 216 blank pixels that are also ignored by the monitor, anyway. have 1368 framebuffer pixels out of 1584 horizontal pixels in total. The details are a bit complicated, but again for legacy reasons, some of those connections include a horizontal and vertical phase where only blank pixels are sent. ![]() You didn't say how your monitor is connected to your graphics card (VGA, DisplayPort, HDMI/DVI. Due to the way the legacy CRTC hardware works on Nvidia graphics cards, you can only set horizontal resolutions which are multiples of 8.
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