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Old 02-24-2005, 12:53 PM   #1
fatblueduck
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Registered: Dec 2003
Location: Long Beach, CA
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low resolution


I'm desperate: I've posted this in the and nobody there has been able to help me.

I've got this:
P25-S507
17inch monitor
Nvidia GeForce FX Go5200
1440x900 pixels (resolution)
2048x1536 pixels (max resolution)

my resolution is horrible and when I run xdpyinfo I can see that my screen is running at

dimensions: 1024x768 pixels (321x201 millimeters)
resolution: 81x97 dots per inch
depths (7): 24, 1, 4, 8, 15, 16, 32

/var/log/Xorg0log shows that my vrefresh and hsync values are out of range

I started off using hsync 31.5-100 and vrefresh 59-75.
I know you are not supposed to play around with those values (because you could ruin your monitor), but I have tried all kinds of variables and nothing works.

Anyway,everyone using a P25 seems to be using these values, one person with a near-exact model of my own computer wrote that windows shared these vertrefresh and hsync ranges (he was having the same problem).

Using the "nv" module rather than the "nvidia" module my resolution looks terrific, but xwindows will not occupy my entire screen and the /var/log file still posts that vrefresh and hsync values are out of range.

please help me anyone. I cannot find anywhere on the internet where this problem has reached a conclusion for anyone. I am desperate.
 
Old 02-24-2005, 01:38 PM   #2
fatblueduck
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For anyone that has this problem, I hope they will look here and find my solution. YAY I am so HAPPY!!

Ok...two things fixed my problem (kind of -/var/log still shows the vrefresh and hsync values are out of range, but hey -it works!!)
1) xorg.conf needs a modeline in the "monitor" device section. My modeline is this Modeline "1440x900" 106.47 1440 1520 1672 1904 900 901 904 932 -HSync +Vsync follow this link to generate your own modeline (if you are using a different computer than mine) http://xtiming.sourceforge.net/cgi-bin/xtiming.pl

2) In the "screen" section add this line...Option "IgnoreEDID" "1"

after doing those two things my screen looks great.

I am such a dong because I was using my computer with that horrible resolution for like a year. I just realized my resolution was bad when I installed windows on my computer.
 
Old 02-24-2005, 01:47 PM   #3
bulliver
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Registered: Nov 2002
Location: Edmonton AB, Canada
Distribution: Gentoo x86_64; Gentoo PPC; FreeBSD; OS X 10.9.4
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Glad you got your problem fixed.

I always wondered though...what exactly does this modeline do? I have been using X for years and have never specified a modeline. My resolution has always been fine.
 
Old 02-24-2005, 10:09 PM   #4
fatblueduck
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http://www.linux.com/howtos/XFree86-...TO/index.shtml

reading that howto is helpful as it describes the nature and deployment of modelines.
 
Old 02-25-2005, 02:59 PM   #5
bulliver
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Hey, thanks for the link. So I guess modelines are useful for older (or misbehaving) monitors that cannot communicate their abilities to the X server.
 
Old 02-25-2005, 03:25 PM   #6
IsaacKuo
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Registered: Apr 2004
Location: Baton Rouge, Louisiana, USA
Distribution: Debian 4.0 Etch
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Modelines are also useful for customizating HDTV timings. In particular, many HDTVs have "overscan", which means that the edges of the display aren't actually visible. You need to customize a modeline which will windowbox the amount of the display actually used by the computer so the entire desktop is visible. Otherwise, you can't see your panels/taskbars/full size window borders...

Also, a custom modeline can be useful for acheiving extremely high resolutions through interlacing. Even an old monitor which is "officially" limited to 1024x768 can actually display an interlaced 2048x1536 display. I find that interlace flicker on a 2048x1536i 85hz display is rather modest, and more than made up for by the extremely nice resolution and detail! Even my old 333mhz PII Celeron runs at 2048x1536 resolution--thanks to custom modelines.
 
  


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