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I run my Ubuntu 12.04/MATE desktop with a 22 inch monitor at 1920x1080 resolution. The resolution is the max the AOC monitor can take. My previous monitor was an Acer 19 inch with 1366x768 for the max resolution. I have that and an HP monitor with the same size/resolution as spares. The HP I just bought locally [used] for $35.

I never really though of the scaling size vs. the actual printed document, or placed the printed sheet up to the monitor before.

I never knew that GIMP, PDF viewer, and Inkscape would display the 1 to 1 ratio for print size vs. screen size. I know that LO seems not to do that, sometimes or for some monitors.

As for my monitor, I just opened a document and displayed it at 100%. Then I placed the printer paper up to the monitor. Well the first line on both the screen and page were the same size. Matched perfectly for me.

SO, with my 22 inch monitor set at the maximum resolution of 1920x1080 and running Ubuntu 12.04 with MATE desktop environment, and LO 4.0.4 - it displays the correct size on the screen with the 1 to 1 ratio of screen size vs. actual printed size [on a letter size paper.

I wonder if a person does not use the proper screen resolution and size ration, would that change the results. I know if I tried the non-widescreen 1280x1024 [which is square-ish] on a widescreen monitor, the image would be messed up. I have seen them at 4:3, 16:9, 16:10, and other ratios. Some wide screens are "wider" than others for their physically measured width vs. height measurements. If I plug in my laptop to my HDTVs, the TV's physical measured display ratio is not the same as the laptop's running whatever resolution the HDTV can for max. I even have a "square-ish" LCD monitor that is the same physical size as a 17 inch CRT monitor.

To be honest, it may be your monitor and/or what you have it set for in resolutions. Maybe LO cannot handle that monitor size/resolution or it could be the desktop environment.

As for the dot-per inch, well I never have seen any specifications for the monitor other than the 75dpi, or at least I do not remember seeing it. By-the-by - the 75 dpi has been standard for a long time and printers tend to use that number in multiples for their print resolutions. 75, 150, 300, 600, 1200, etc. The dot-matrix printers were 75 dpi and the "high resolution" ones were 150 dpi. They used both sizes in a computer center I worked in back when desktop computers were IBM 286's and Apple IIe was the computers. The very first Mac computers just came out.

On 08/04/2013 04:46 AM, Matthias Nagel wrote:

if I select 100% scaling in LibreOffice Writer the sheet appears much bigger on the display than in reality. 
I use Linux 11.0 with a KDE environment and "xdpyinfo" reports

screen #0:
dimensions:    1680x1050 pixels (331x207 millimeters)
resolution:    129x129 dots per inch

which is correct. Any other program (Gimp, PDF viewer, Inkscape) that deals with "real sizes" 
behaves correctly. That means, if I create an object with a length of 1cm and I put a ruler in front of my 
display, the object really appears as 1cm.

It seems that LibreOffice always assumes a display resolution of 75dpi. Is there any option to 
change this behaviour?

Best regards, Matthias Nagel

Matthias Nagel
Parkstra├če 27
76131 Karlsruhe

Mobil: +49-151-15998774
ICQ: 499797758
Skype: nagmat84

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