display dimension/resolution - what affects settings?

[Tom London]

Running a laptop with Intel graphics (X60) and intel driver, I
typically connect to 19" external monitors both at home and at work.
The monitors are different (one HP, one MEL).

The layout is 'different' on two monitors.

Diffing the output of xdpyinfo shows:

[tbl at localhost ~]$ diff home-xdpyinfo work-xdpyinfo
20c20
< focus:  window 0x1c00096, revert to Parent
---
> focus:  window 0x1800020, revert to Parent
59,60c59,60
<   dimensions:    1280x1024 pixels (246x185 millimeters)
<   resolution:    132x141 dots per inch
---
>   dimensions:    1280x1024 pixels (376x301 millimeters)
>   resolution:    86x86 dots per inch
[tbl at localhost ~]$

What 'goes into' these settings?

Windows laid out on the right border on one screen is positioned about
a third of the way in on the other.

This due to display differences?

tom

[I believe I have the 'font resolution' set at 96dpi..]
-- 
Tom London