On Monday 16 January 2012 00:03:35 Fedora User wrote:
A post for posterity. The essence of this issue was that, using KDE,
the
highest resolution that was offered for my HDTV, connected to my
laptop via HDMI, was 1024x768. A number of people made a number of
suggestions.
Turns out that the problem rested in a check box toggle for unified
displays. Unchecking the box provides the ability set an HDTV at
1920x1080.
Having said that, the expectation is that one could have the laptop at
1366x768 while the TEEVee is set to 1920x1080. That is just not the
case.
I missed the earlier thread about this. Would something on the lines of
xrandr --output LVDS1 --mode 1366x768 --output HDMI1 --mode 1920x1080 --right-
of LVDS1
work? Note that the above should be a single line. Also, note that I just
guessed the names "LVDS1" and "HDMI1", as well as supported
resolutions. You
should first run "xrandr" (with no arguments) to read off the "real"
names for
your hardware and the respective supported resolution names. In addition, note
that you want to decide whether the HDMI should be on the right or on the
left (or above or below) of the laptop display. Finally, note that I have
written the above from memory, without tesing or anything... ;-)
Apparently that, as well as WiDi are still Windows only.
What are "that" and "WiDi"?
Oh, someone recommended using xrandr to manipulate the display
devices.
That might be a good idea. However, the man page is about as arcane as
The Egyptian Book of the Dead.
Read it bottom-up. :-D Start from examples section at the bottom of the man
page, and then gradually get familiar with the xrandr 1.1 options, then xrandr
1.2 (which I used in the above example), and then read up xrandr 1.3 options
only if you decide you need them. ;-)
The xrandr tool is really very simple to use, once you have a clear idea what
you want to achieve. Most of the time you will just want to manage the states
and resolutions of particular monitors connected (--output, --auto, --mode,
--off) and their relative positions (--left-of, --right-of, --above, --below,
--same-as). Read only the explanations for these in the man page, and you'll
have the operational knowledge to cover 90% of anyone's needs. ;-)
HTH, :-)
Marko