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Old 10-19-2010, 05:05 AM   #1
madsovenielsen
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Registered: Aug 2009
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Dell Latitude C840 Screen resolution - Slackware


Hello.

I have a Dell Latitude C840 with a nVidia GeForce4 440 Go card and the screen is reported to go to 1600x1200, 32 bpp on Wikipedia.

But im unable to choose that resolution in Slackware. last time i changed the resolution to a higher one i needed to edit the xorg.conf, and change the HorizSync setting to match the monitor. but im unable to find the specifications on the screen for the C840. is there another way of doing this ? mabye a nVidia driver or something ?

Code:
# **********************************************************************
# Monitor section
# **********************************************************************

# Any number of monitor sections may be present

Section "Monitor"

    Identifier  "My Monitor"

# HorizSync is in kHz unless units are specified.
# HorizSync may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY.  REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.

    HorizSync   31.5 - 50.0

#    HorizSync	30-64         # multisync
#    HorizSync	31.5, 35.2    # multiple fixed sync frequencies
#    HorizSync	15-25, 30-50  # multiple ranges of sync frequencies

# VertRefresh is in Hz unless units are specified.
# VertRefresh may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY.  REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.

    VertRefresh 40-90

EndSection
Any help is as always greatly appriciated.
 
Old 10-19-2010, 06:57 AM   #2
disturbed1
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I have the same laptop. nv, nouveau, and the Nvidia driver all get the display correct. 1600x1200.

Let Xorg create a default xorg.conf. As root, without X running (init 3)
Code:
Xorg -configure
Edit the created xorg.config.$ to replace the driver to which ever one you want (nv, nouveau, nvidia). If you are using the nvidia binary driver you need to also add this line -
Code:
Option "UseDisplayDevice" "DFP-0"
under the Device section. Then copy / move that file to /etc/X11/xorg.conf.
 
Old 10-19-2010, 10:24 AM   #3
madsovenielsen
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Quote:
Originally Posted by disturbed1 View Post
I have the same laptop. nv, nouveau, and the Nvidia driver all get the display correct. 1600x1200.

Let Xorg create a default xorg.conf. As root, without X running (init 3)
Code:
Xorg -configure
Edit the created xorg.config.$ to replace the driver to which ever one you want (nv, nouveau, nvidia). If you are using the nvidia binary driver you need to also add this line -
Code:
Option "UseDisplayDevice" "DFP-0"
under the Device section. Then copy / move that file to /etc/X11/xorg.conf.
Thanks alot, i will try that.
 
Old 10-19-2010, 12:43 PM   #4
madsovenielsen
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Registered: Aug 2009
Posts: 182

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I have run Xorg -configure and everything went well.

But when i change the driver to nv. theres no change in what resolutions i can choose. 1024x768 is the maximum.

[CODE]
# **********************************************************************
# Monitor section
# **********************************************************************

# Any number of monitor sections may be present

Section "Monitor"

Identifier "My Monitor"

# HorizSync is in kHz unless units are specified.
# HorizSync may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.

HorizSync 31.5 - 50.0

# HorizSync 30-64 # multisync
# HorizSync 31.5, 35.2 # multiple fixed sync frequencies
# HorizSync 15-25, 30-50 # multiple ranges of sync frequencies

# VertRefresh is in Hz unless units are specified.
# VertRefresh may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.

VertRefresh 40-90

EndSection


# **********************************************************************
# Graphics device section
# **********************************************************************

# Any number of graphics device sections may be present

Section "Device"
Identifier "VESA Framebuffer"
Driver "nv"
#VideoRam 4096
# Insert Clocks lines here if appropriate
EndSection
[CODE]

Can you please tell me what HorizSync and VertRefresh your xorg.conf is set to ?

/mads
 
Old 10-19-2010, 06:53 PM   #5
disturbed1
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If your xorg.conf looks like that, then you are not using the one from Xorg -configure, looks like the default xorg.config-vesa file.

Xorg autoprobes, and sets everything up correctly. No need to edit anything besides the driver.
 
Old 10-21-2010, 12:16 AM   #6
madsovenielsen
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Registered: Aug 2009
Posts: 182

Original Poster
Rep: Reputation: 15
Quote:
Originally Posted by disturbed1 View Post
If your xorg.conf looks like that, then you are not using the one from Xorg -configure, looks like the default xorg.config-vesa file.

Xorg autoprobes, and sets everything up correctly. No need to edit anything besides the driver.
You are totally correct. its fixed now. Thanks alot
 
  


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