ViewSonic monitor problem

Antonio Olivares olivares14031 at yahoo.com
Mon Jul 9 02:03:42 UTC 2007


--- Gerhard Magnus <magnus at agora.rdrop.com> wrote:

> > Gerhard Magnus wrote:
> > > > My old CRT monitor burned out and I've
> replaced it with a ViewSonic
> > > > VG2030WM, which has a resolution of 1680 X
> 1050 @ 60Hz.  Kudzu (or
> > > > whatever configures new hardware) set it to
> 1280 X 1024 & 60Hz, which
> > > > works fine, although everything is a little
> larger than I want.  The
> > > > monitor model isn't listed in
> system-config-display so I've set this to
> > > > the generic "LCD Panel 1680 X 1050".  But when
> under "Display Settings"
> > > > I set the resolution to 1680 X 1050, the next
> time I try logging in or
> > > > rebooting the monitor hangs the system. 
> Exactly how I get around this
> > > > isn't clear -- sometimes the system goes back
> to 1280 X 1024 after
> > > > several attempts to reboot, and once I got the
> screen back by starting
> > > > to type something at the command line login
> prompt that appears briefly
> > > > before X starts.
> 
> On Sun, 2007-07-08 at 12:22 -0700, Antonio Olivares
> wrote:
> Doing a search for the monitor in question 
>
http://www.viewsonic.com/products/desktopdisplays/lcddisplays/graphicseries/vg2030wm/
> 
> > In your /etc/X11/xorg.conf
> > 
> > Edit "Monitor" Section 
> > 
> > Section "Monitor"
> >         Identifier "ViewSonic"   <----  Here put
> ViewSonic 
> >         VendorName "ViewSonic"  <----- put
> ViewSonic 
> >         ModelName "VG2030VM"  <----- put VG2030VM 
> >         HorizSync 24.0 - 92.0  <----  Got this
> from product guide 
> >         VertRefresh 50.0 - 85.0  <---- see above 
> >         Option "DPMS"
> > EndSection

> Here's my new xorg.conf:
> 
> # Xorg configuration created by
> system-config-display
> 
> Section "ServerLayout"
> 	Identifier     "single head configuration"
> 	Screen      0  "Screen0" 0 0
> 	InputDevice    "Keyboard0" "CoreKeyboard"
> EndSection
> 
> Section "Files"
> 	ModulePath   "/usr/lib/xorg/modules"
> EndSection
> 
> Section "InputDevice"
> 	Identifier  "Keyboard0"
> 	Driver      "kbd"
> 	Option	    "XkbModel" "pc105"
> 	Option	    "XkbLayout" "us"
> EndSection
> 
> Section "Monitor"
> 
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
>  ### Comment all HorizSync and VertSync values to
> use DDC:
> 	Identifier   "ViewSonic"
> 	VendorName   "ViewSonic"
> 	ModelName    "VG2030wm"
>  ### Comment all HorizSync and VertSync values to
> use DDC:
> 	HorizSync    24.0 - 92.0
> 	VertRefresh  50.0 - 85.0
> 	Option	     "DMPS"
> EndSection
> 
> Section "Device"
> 	Identifier  "Videocard0"
> 	Driver      "i810"
> EndSection
> 
> Section "Screen"
> 	Identifier "Screen0"
> 	Device     "Videocard0"
> 	Monitor    "ViewSonic"
> 	DefaultDepth     24
> 	SubSection "Display"
> 		Viewport  0 0
>                 Depth     1
>                 Modes "1680 X 1050" "1280x1024"
> "1152x864" "1024x768"
> "832x624" "800x600" "720x400" "640x480"
>         EndSubSection
>         SubSection "Display"
>                 Viewport  0 0
>                 Depth     4
>                 Modes "1680 X 1050" "1280x1024"
> "1152x864" "1024x768"
> "832x624" "800x600" "720x400" "640x480"
>         EndSubSection
>         SubSection "Display"
>                 Viewport  0 0
>                 Depth     8
>                 Modes "1680 X 1050" "1280x1024"
> "1152x864" "1024x768"
> "832x624" "800x600" "720x400" "640x480"
>         EndSubSection
>         SubSection "Display"
>                 Viewport  0 0
>                 Depth     15
>                 Modes "1680 X 1050" "1280x1024"
> "1152x864" "1024x768"
> "832x624" "800x600" "720x400" "640x480"
>         EndSubSection
>         SubSection "Display"
>                 Viewport  0 0
>                 Depth     16
>                 Modes "1680 X 1050" "1280x1024"
> "1152x864" "1024x768"
> 
=== message truncated ===

Ok, Jerry on the section 

### Comment all HorizSync and VertSync values to use
DDC:

Have you tried to comment out the 

HorizSync 24.0 - 92.0
VertRefresh 50.0 - 85.0 by putting in a "#" before
them 

like 

 Section "Monitor"
 
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
  ### Comment all HorizSync and VertSync values to
 use DDC:
 	Identifier   "ViewSonic"
 	VendorName   "ViewSonic"
 	ModelName    "VG2030wm"
  ### Comment all HorizSync and VertSync values to
 use DDC:
Here ---> # 	HorizSync    24.0 - 92.0
 and ---> # 	VertRefresh  50.0 - 85.0
 	Option	     "DMPS"
 EndSection

Does that make any difference?

(at your own risk, but should nonetheless work, I have
done this plenty of times)
Before you try the following below, you may use a
livecd also. 

You can also play with livecd's to see if any of them
give you maximum resolution and take a look at the
xorg.conf file generated by them.  i.e., Knoppix,
Fedora Live, SLAX, Berry, etc., any one that you may
have at hand. 


If this does not work, the other option is to make a
backup copy of your old xorg.conf file by becoming
root user
$ su -
password
# cd /etc/X11/
# cp xorg.conf xorg.conf.bak
to back it up, just in case something bad happens.
Reboot and press e to edit when grub starts up and
enter into level 3 (non-gui).  Try to configure
xorg.conf by Xorg.  Login as root user

type 
# Xorg -configure
and then test the X configuration and the mouse should
appear at the middle (press ctrl+alt+backspace) to get
back to the terminal. 

copy it over to /etc/X11/
# cp /root/xorg.conf.new /etc/X11/xorg.conf
replace existing xorg.conf?  Select yes
and try to login by typing 
# startx
Does it give you 1680x1050?  If it does not, then
check the 
Lines with 
HorizSync 24.0 - 92.0
VertRefresh 50.0 - 85.0
and the modes in the bottom  and put in the lines to
all Depths from the beginning till the end.  

         SubSection "Display"
                 Viewport  0 0
                 Depth     15
                 Modes "1680 X 1050" "1280x1024"
 "1152x864" "1024x768"
 "832x624" "800x600" "720x400" "640x480"

Configuring this to the maximum resolution is
sometimes a pain.  This should not happen as Fedora
should do this out of the box with minimal problems. 
But different hardware and not enough testing with
more hardware, issues like this arise as a result of
that.  

Regards,

Antonio 


       
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