Steve Sullivan writes:
Hi,
When I connect an external monitor to my Dell
Inspiron 8000 laptop, I'm not able to set the resolution
for the external monitor. The laptop screen is 1400 x 1050,
and the external monitor accepts 1600 x 1200, but the
laptop always drives it at 1400 x 1050.
/etc/X11/XF86Config contains only ONE Modeline:
# 1600x1200 @ 60Hz, 75.00 kHz hsync
Modeline "1600x1200" 162 1600 1664 1856 2160 1200 1201 1204 1250 +HSync +VSync
/etc/X11/XF86Config-4 contains:
Section "Screen"
Identifier "Screen0"
Device "ATI Rage 128 Mobility"
Monitor "DELL 2000FP"
DefaultDepth 24
Subsection "Display"
Depth 24
Modes "1600x1200"
EndSubSection
EndSection
Before I startx, both the laptop and external monitor work well.
But after I issue startx, the external monitor switches off
and the resolution somehow changes to 1400 x 1050.
When I Fn-F8 to switch the external monitor back on,
it's at 1400 x 1050.
Why does this even work at 1400 x 1050?
Is the Modeline ignored?
How can I get the external monitor running at 1600 x 1200?
I'm running Redhat 7.2 (with XFree 4.1) on a Dell Inspiron
8000, with a Pentium. It has an ATI Rage 128 Mobility with
16 MB ram. In Xconfigurator I chose only ONE resolution:
1600 x 1200 at 24 bit color, and then edited the XF86Config
file to remove all other Modelines.
Many many thanks for any hints!
Steve Sullivan
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