[desktop-discuss] Xorg Modeline generation

[Stuart Kreitman]

 Ok, I understand your predicament a little better.


Firstly, try using "cvt", it uses the coordinated video timing 
specificaton from VESA:

# ./cvt 2560 1600
# 2560x1600 59.99 Hz (CVT 4.10MA) hsync: 99.46 kHz; pclk: 348.50 MHz
Modeline "2560x1600_60.00"  348.50  2560 2760 3032 3504  1600 1603 1609 
1658 -hsync +vsyn


Also need to add to the monitor section:

option "Preferred Mode" "2560x1600_60.00

and skip the failing EDID probe with:

option "NoDDC" "true"


It is the KVM unit that is blocking your system from auto-configuring.  
If you can plug the monitor
directly into the system, you will see autoconfig working. While you're 
there, dump the EDID data
(Some drivers, like the ATI, dump EDID into Xorg.0.log)

A wealth of information on this:

http://blogs.sun.com/moinakg/entry/grabbing_monitor_edid_data_on


Stuart




Lars Tunkrans wrote:
> Skk  Wrote:
>   
>> Lars:
>> You should not need to do this. The Xorg server will read the EDID data
>>     
> >from the display
>   
>> and autoconfigure it. If this is not working correctly, please submit
>> /var/log/Xorg.0.log
>>     
>
>
>    Yeah,   it should  should  read the EDID  data   But  the Samsung screen I have presently 
> does'nt share its  EDID data  with solaris. Probably a bug in the screens microcode. 
> Maybe its the KVM unit between the computer and the screen thats the cause. 
>  So I figured I needed  to know if I had the 
> correct values before buying a new screen.
> Anyway,   Here is what happends  when  Xorg 7.02  tries to read my existing 
> Samsung MP242   24" screen :
>
> Solaris Nevada version is Build 64a 
>
> Nvidia Driver:
>
> NVDAgraphics  NVIDIA Graphics System Software
>               (i386) 1.0.9637,REV=2007.03.01.18.47
>
> from /var/log/Xorg.0.log
>
> (II) Setting vga for screen 0.
> (++) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
> (==) NVIDIA(0): RGB weight 888
> (==) NVIDIA(0): Default visual is TrueColor
> (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
> (**) NVIDIA(0): Enabling RENDER acceleration
> (WW) NVIDIA(GPU-0): Unable to read EDID for display device CRT-0
> (II) NVIDIA(0): NVIDIA GPU GeForce 6500 at PCI:1:0:0 (GPU-0)
> (--) NVIDIA(0): Memory: 262144 kBytes
> (--) NVIDIA(0): VideoBIOS: 05.44.02.45.68
> (II) NVIDIA(0): Detected PCI Express Link width: 16X
> (--) NVIDIA(0): Interlaced video modes are supported on this GPU
> (--) NVIDIA(0): Connected display device(s) on GeForce 6500 at PCI:1:0:0:
> (--) NVIDIA(0):     CRT-0
> (--) NVIDIA(0): CRT-0: 400.0 MHz maximum pixel clock
> (II) NVIDIA(0): Assigned Display Device: CRT-0
> (WW) NVIDIA(0): No valid modes for "1920x1200"; removing.
> (WW) NVIDIA(0): No valid modes for "1600x1200"; removing.
> (II) NVIDIA(0): Validated modes:
> (II) NVIDIA(0):     "1280x1024"
> (II) NVIDIA(0): Virtual screen size determined to be 1280 x 1024
> (WW) NVIDIA(0): Unable to get display device CRT-0's EDID; cannot compute DPI
> (WW) NVIDIA(0):     from CRT-0's EDID.
> (==) NVIDIA(0): DPI set to (75, 75); computed from built-in default
>
> And this is the correct behavior with the Modeline 
>
> (II) Setting vga for screen 0.
> (++) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
> (==) NVIDIA(0): RGB weight 888
> (==) NVIDIA(0): Default visual is TrueColor
> (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
> (**) NVIDIA(0): Enabling RENDER acceleration
> (WW) NVIDIA(GPU-0): Unable to read EDID for display device CRT-0
> (II) NVIDIA(0): NVIDIA GPU GeForce 6500 at PCI:1:0:0 (GPU-0)
> (--) NVIDIA(0): Memory: 262144 kBytes
> (--) NVIDIA(0): VideoBIOS: 05.44.02.45.68
> (II) NVIDIA(0): Detected PCI Express Link width: 16X
> (--) NVIDIA(0): Interlaced video modes are supported on this GPU
> (--) NVIDIA(0): Connected display device(s) on GeForce 6500 at PCI:1:0:0:
> (--) NVIDIA(0):     CRT-0
> (--) NVIDIA(0): CRT-0: 400.0 MHz maximum pixel clock
> (II) NVIDIA(0): Assigned Display Device: CRT-0
> (WW) NVIDIA(0): No valid modes for "1600x1200"; removing.
> (II) NVIDIA(0): Validated modes:
> (II) NVIDIA(0):     "1920x1200"
> (II) NVIDIA(0):     "1280x1024"
> (II) NVIDIA(0): Virtual screen size determined to be 1920 x 1200
> (WW) NVIDIA(0): Unable to get display device CRT-0's EDID; cannot compute DPI
> (WW) NVIDIA(0):     from CRT-0's EDID.
> (==) NVIDIA(0): DPI set to (75, 75); computed from built-in default
>
>
> //Lars
>  
>  
> This message posted from opensolaris.org
> _______________________________________________
> desktop-discuss mailing list
> desktop-discuss at opensolaris.org
>