Changing the screen resolution permanently

Changing the screen resolution permanently

[Engin FIRAT]

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Hello all,

In my system there are two monitors and these monitors are fed by mirrored
displays. To get such a configuration I have created a script that
dynamically adjusts the system by using xrandr. The script is attached as
changeres.sh. Everything works well. However I've note that the system
startup time is increased by ~15 seconds and I do not want such a case. To
handle this problem, I think that I need to adjust the screen resolution
permanently with a xorg.conf file. However I cannot create one that adjusts
the monitors as expected. xorg.conf file is also attached to this post.

Details of the system:
Processor: Intel Atom E3845
OS: Lubuntu 14.04.1
Driver: Installed via intel-graphics-installer 1.0.7

I have tried to create a xorg.conf file with the command X -configure,
however the created file is for only one monitors since the system uses
only the first monitor at its default configuration (ie. no xrandr setting)

Could you please help me to create a correct xorg.conf file.
Regards.

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[-- Attachment #2: xorg.conf --]
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Section "Device"
        Identifier     "Intel 945G "
        Driver         "intel"

        # Using the name of the output defined by the video driver plus the identifier of a
        #     monitor section, one associates a monitor section with an output by adding an
        #     option to the Device section in the following format:
        #     Option "Monitor-outputname" "monitor ID"

        Option          "monitor-VGA1" "Commander"
        Option          "monitor-HDMI1" "Operator"
        #Option         "monitor-TMDS-1" "dvi"
EndSection

Section "Monitor"
        Identifier      "Commander"
        Modeline        "1280x1024x60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066

        # specifies a mode to be marked as the preferred initial mode of the monitor
        Option "PreferredMode"  "1280x1024"
        # This optional entry specifies the position of the monitor within the X screen.
        Option        "Position" "0 0"
        #This optional entry specifies that the monitor should be ignored
        #     entirely, and not reported through RandR.  This is useful if the
        #     hardware reports  the  presence  of  outputs  that do not exist.
        #Option "Ignore"  "true"
EndSection

Section "Monitor"
        Identifier      "Operator"
	Modeline	"1280x1024x60" 108.0 1280 1328 1440 1688 1024 1025 1028 1066
        #Options LeftOf, RightOf, Above, Below specify monitors' relative position

        Option "PreferredMode"  "1280x1024"
	Option "Position" "0 0"

        # This optional entry specifies  whether  the  monitor  should  be
        #     turned  on  at  startup.  By default, the server will attempt to
        #     enable all connected monitors.
        #Option "Enable"  "true"       

        #This optional entry specifies the initial rotation of the given monitor.
        #     Valid values for rotation are "normal", "left", "right", and "inverted".
        # Option "Rotate"  "left"
EndSection

Section "Screen"
        Identifier      "Default Screen"
        Device        "Intel Corporation 945G Integrated Graphics Controller"
        Monitor       "Operator"
        DefaultDepth  24
        SubSection "Display"
                Depth          24
                Modes         "1280x1024"
        EndSubSection
EndSection

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Re: Changing the screen resolution permanently

[Felix Miata]

Engin FIRAT composed on 2015-09-18 20:07 (UTC+0300):

> In my system there are two monitors and these monitors are fed by mirrored
> displays. To get such a configuration I have created a script that
> dynamically adjusts the system by using xrandr. The script is attached as
> changeres.sh. Everything works well. However I've note that the system
> startup time is increased by ~15 seconds and I do not want such a case. To
> handle this problem, I think that I need to adjust the screen resolution
> permanently with a xorg.conf file. However I cannot create one that adjusts
> the monitors as expected. xorg.conf file is also attached to this post.

> Details of the system:
> Processor: Intel Atom E3845
> OS: Lubuntu 14.04.1
> Driver: Installed via intel-graphics-installer 1.0.7

> I have tried to create a xorg.conf file with the command X -configure,
> however the created file is for only one monitors since the system uses
> only the first monitor at its default configuration (ie. no xrandr setting)

> Could you please help me to create a correct xorg.conf file.

See if this provides enough skeleton to get you going.
http://fm.no-ip.com/Share/Linux/xorg.conf-inteldual03

Note that for your needs, each Section "Monitor" in it is overkill. It should
be sufficient to include in each only an identifier and a position option.
For 1280x1024 displays, everything else should either be unnecessary, or
auto-generate via EDID.

Note too that it intentionally contains no modelines. At least 99.9999% of
the time, the system is smart enough to auto-generate whatever modeline is
applicable to the appropriate mode, so don't waste your time looking for or
including any modelines unless your Commander and Operator 1280x1024 displays
have already proven themselves incapable of allowing appropriate auto-generation.

Note that Kubuntu has a built-in utility called kscreen that autostarts
unless you explicitly override it. Were you to add KDE to your Lubuntu, you
might find Kscreen overriding your custom configuration:
https://bugs.kde.org/show_bug.cgi?id=317929
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/
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