Subj : Re: Black screen on LVDS when starting X in RedHat 8.0
To   : alt.linux,comp.os.linux,comp.os.linux.hardware
From : Dennis Peere
Date : Mon Jun 28 2004 12:52 pm


"Darklight" <nglennglen@netscape.net> wrote in message
news:cbjhnh$ak5$1@titan.btinternet.com...
> Dennis Peere wrote:
> > EndSection
> >
> > Section "Monitor"
> > Identifier "Monitor1"
> > VendorName "Monitor Vendor"
> > ModelName "Unknown monitor"
> > HorizSync 31.5 - 37.9
> > VertRefresh 50.0 - 70.0
> > ModeLine "1400x1050" 129.0 1400 1464 1656 1960 1050 1051 1054 1100
> > +hsync +vsync
> > ModeLine "1400x1050" 151.0 1400 1464 1656 1960 1050 1051 1054 1100
> > +hsync +vsync
> > ModeLine "1400x1050" 162.0 1400 1464 1656 1960 1050 1051 1054 1100
> > +hsync +vsync
> > ModeLine "1400x1050" 184.0 1400 1464 1656 1960 1050 1051 1054 1100
> > +hsync +vsync
> > Option "dpms"
> > EndSection
>
> I went here and entered your specs
> http://xtiming.sourceforge.net/cgi-bin/xtiming.pl
>
> And got this
> Modeline "1400x1050@70" 159.97 1400 1432 2032 2064 1050 1070 1082 1103
> see the difference
> i use to use it but in SUSE 9.1 pro it does it for you
>
> Hope it helps
Thanks for your respons but It didn't solve my problem since the "black
screen" occurs on Monitor0 in stead of Monitor1.

I've found the specs of Monitor0 on
http://www.lcdspecifications.com/samsungpdfs/LTN104S2-L01A.pdf

I've tried to enter the following specs on the website you mentionned :

Horizontal sync : - Min 46 Max

Vertical sync : - Min 75 Max

Dot Clock freq.: 49

Vis. resolution : 800 x 600

Refresh rate : 75

Dot clock freq.: 49

Constr.Asp. Rat. : 0 / 0

Interlace : (left blank)

Doublescan : (left blank)

I get the follwing message :

Modeline "800x600@75" 49.85 800 832 1016 1048 600 611 619 631

Horizontal sync frequency: 47.57 kHz


Warning!

Horizontal sync frequency above maximum of 46kHz!

Dot clock above maximum of 49MHz!

Interlace is recommended.

Can you (or anyone else) help me out please

Regards,

Dennis

.