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Old 04-23-2007, 02:48 AM   #1
Registered: Aug 2004
Distribution: opensuse ,debian
Posts: 208

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my slackware only want using highest resolution.

My slackware 11.0 running in laptop only want using the highest resolution available for the GUI. (I don't know if this happen to slackware 10.2 or not)

Here's the explanation:
For exampe, currently I use resolution 1024x768.
If I go to KDE control center->peripherals->display it will show 1024x768. So far that's fine. But if I change it to 800x600 or any lower res, the kde will logout suddenly and abruptly and then back to console. From there, typing "startx" will back to kde with resolution 1024x768.
The strange thing is, if I change in /etc/X11/xorg.conf to make 800x600 as the highest resolution available (delete the "1024x768" for all depth mode), the kde will use 800x600. But still, can't go lower to 640x480.
Anyone know what the solution for this?
so that my KDE can choose resolution more flexible...
Thanx in advance.
Old 04-23-2007, 05:52 AM   #2
LQ Guru
Registered: Dec 2006
Location: underground
Distribution: Slackware64
Posts: 7,594

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You could try pressing CTRL + or CTRL - and see if it changes resolutions for you. I'm not sure where the resolutions are defined, but I suspect X is selecting available modes from xorg.conf. On the other hand, it might just be a KDE illusion but I do recall my monitor actually changing video-modes when using those key combinations.
Keep in mind, you will only be able to use resolutions which your laptop's screen actually support.
Old 04-23-2007, 01:52 PM   #3
Registered: Nov 2005
Location: Budapest, Hungary
Distribution: Slackware, Gentoo
Posts: 346

Rep: Reputation: Disabled
Do you have all the resolutions in xorg.conf?
Like so:
Subsection "Display"
        Depth       24
        Modes       "1152x864" "1024x768"
        ViewPort    0 0
Be sure to add every resolution you want to use to the default depth (defined a few lines above).
Old 04-27-2007, 02:45 AM   #4
Registered: Aug 2004
Distribution: opensuse ,debian
Posts: 208

Original Poster
Rep: Reputation: 30
I don't see anything wrong with my xorg.conf.
Here's my current xorg.conf snippet:
# **********************************************************************
# Screen sections
# **********************************************************************

# Any number of screen sections may be present.  Each describes
# the configuration of a single screen.  A single specific screen section
# may be specified from the X server command line with the "-screen"
# option.
Section "Screen"
    Identifier  "Screen 1"
    Device      "VESA Framebuffer"
    Monitor     "My Monitor"

# If your card can handle it, a higher default color depth (like 24 or 32)
# is highly recommended.

#   DefaultDepth 8
#   DefaultDepth 16
   DefaultDepth 24
#   DefaultDepth 32

# "1024x768" is also a conservative usable default resolution.  If you
# have a better monitor, feel free to try resolutions such as
# "1152x864", "1280x1024", "1600x1200", and "1800x1400" (or whatever your
# card/monitor can produce)

    Subsection "Display"
        Depth       8
        Modes  "1024x768" "800x600" "640x480"
    Subsection "Display"
        Depth       16
        Modes  "1024x768" "800x600" "640x480"
    Subsection "Display"
        Depth       24
        Modes  "1024x768" "800x600" "640x480"
    Subsection "Display"
        Depth       32
        Modes  "1024x768" "800x600" "640x480"



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