The board I’m running on has an LVDS and VGA output. The LVDS is constrained to no more than 1024X768, the VGA can go up to 1680X1050. When I open the screen configuration, the “Unify Outputs” box is checked, and I can’t change the VGA resolution above 1024 X 768. So, I uncheck the Unify box, and set the LVDS to disabled (I don’t want to use that output). I can then change the VGA to its max resolution. I apply, confirm it’s good, and then set it as default.
However, upon rebooting, once again, the “Unify Outputs” box is checked and I’m back to 1024X768. Quite annoying. Any suggestions?
Linux linux-lfev 3.4.6-2.10-desktop #1 SMP PREEMPT Thu Jul 26 09:36:26 UTC 2012 (641c197) x86_64 x86_64 x86_64 GNU/Linux
This is what xrandr -q says:
Screen0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
LVDS1 connected (normal left inverted right x axis y axis)
1024x768 60.0 +
800x600 60.3 56.2
640x480 59.9
VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 474mm x 296mm
1680x1050 60.0 + 74.9
1600x1000 60.0
1280x1024 75.0 72.0 60.0
1440x900 75.0 59.9
1152x864 75.0
1024x768 75.1 70.1 60.0*
800x600 72.2 75.0 60.3
640x480 72.8 75.0 66.7 60.0
720x400 70.1
DP1 disconnected (normal left inverted right x axis y axis)
And this is after unchecking the box, disabling LVDS, and setting the VGA to max.
Screen 0: minimum 320 x 200, current 1680 x 1050, maximum 8192 x 8192
LVDS1 connected (normal left inverted right x axis y axis)
1024x768 60.0 +
800x600 60.3 56.2
640x480 59.9
VGA1 connected 1680x1050+0+0 (normal left inverted right x axis y axis) 474mm x 296mm
1680x1050 60.0*+ 74.9
1600x1000 60.0
1280x1024 75.0 72.0 60.0
1440x900 75.0 59.9
1152x864 75.0
1024x768 75.1 70.1 60.0
800x600 72.2 75.0 60.3
640x480 72.8 75.0 66.7 60.0
720x400 70.1
DP1 disconnected (normal left inverted right x axis y axis)
I have discovered that if I log in as root, then this problem goes away…changes made to the resolution and Unify Outputs box stick. Going in as root, making the changes, and saving as “default”, however, did not change them for the user login.
The system I am troubled with is a closed box with only video and mouse connected to it that will be running a demo during a trade show without customer interaction for 3 days and then the hard drive will be removed and repurposed. So I’m not terribly concerned about permissions or security restrictions, I’d just like it to WORK (being defined as booting into the KDE desktop with the correct resolution). If it would solve my problems, I would (and yes, I’ll dare to say it) **auto-login as root into KDE.
**Logging in as root, I have at least seemed to verify it is a permissions issue…but that’s a far cry from finding the secret file in either KDE or xorg that is preventing screen settings from saving for the user account.
I’ve got today to find the magic thorn in this system, or I’ll have to go for the nuclear option.
On 02/19/2013 05:06 PM, rob g wrote:
> So I’m not terribly concerned about permissions or
> security restrictions, I’d just like it to WORK
unfortunately, there is more to it than ‘just’ security.
the problem is that logging into KDE as root may/can/will change some
configuration files in so many little ways it is difficult to
impossible to know if the next encountered strange problem is a real
problem or a self-inflicted (by logging in as root) problem…
so, there are several helpers here unwilling to try to help when such
has occurred [your thread might suddenly turn quiet!] , the
collective experience being that once spiked it is just real hard to
know what is going on and trying to help becomes one big circular
path of strange problem with no apparent solutions, and a giant waste
of potential (volunteer) helper time…
on the other hand, if you were to fresh format install (and not log
into kde as root) and then give us some info about your information
in a readable format (follow the guide here: http://goo.gl/i3wnr) as
well as the brand/make of graphics in use as well as the graphics
driver in use: available by running this in a root terminal and copy
paste back to here:
/sbin/lspci -v | grep -i display
there might be some pointed help available…
personally, i can’t help with the graphic problem…but think the
crux of your problem is getting the correct graphics driver loaded so
the user controls work, info here [possibly dated]: http://tinyurl.com/37v9y7m