[ltp] X flickering problem, Mdk 7.2, TP770ED

[Nico]

This is getting very strange. When the TP770ED enters a very intensive CPU 
activity, the screen flashes much more frequently. Please let me know where 
could be the problem and how to fix it.
N




On Tue, 12 Jun 2001 11:58:51 +0000
I wrote:

> I installed  Mandrake 7.2 on the Tp770ED and the screen flickers.
> This was not happening with Mandrake 7.1
> With previous linux versions, I applied a manual reconfiguration to 
> /etc/X11/XF86Config and the problem disappeared.
> 
> 
> Please could someone point me *what* does make the screen flicker? 
> Vertical/horizontal frequencies??
> 
> With Mandrake 7.2, through Xdrakes I set the following configurations:
> - Trident cyber 9397 (generic)
> - 1024x768  15 bits
> 
> but the problem is still there.
> So tried moreover to apply these manual changes to /etc/X11/XF86Config :
> 
> ==================================
> Section "Monitor"
>          Identifier      "TP770ED_LCD-1024x768"
>          VendorName      "IBM"
>          ModelName       "TP770Ed (14.1)"
>          HorizSync       31.5-48.5
>          VertRefresch    55-70
>          Modeline        "1024x768"  60.00    1024 1032 1176 1344    768 
771 
> 777 806  
> -hsync -vsync
> EndSection
> 
> Section "Device"
>          Identifier      "TP770ED_XGA"
>          VendorName      "IBM"
>          BoardName       "TP770ED"
>          Option          "accel"
>          VideoRam        4096
> EndSection
> 
> Section "Screen"
>          Driver          "SVGA"
>          Device          "TP770ED_XGA"
>          Monitor         "TP770ED_LCD-1024x768"
>          DefaultColorDepth 32
>          Subsection "Display"
>                  Depth   32
>                  Modes   "1024x768"
>                  ViewPort  0 0 
>                  Virtual         1024  768
>          EndsubSection
> EndSection
> =====================================
> 
> I also tried to adjust the Vertical/Horizontal frequencies in the 
> /etc/XF86Config-4 file
> HorizSync       31.5-48.5
> VertRefresch    55-70
> 
> Is there something I'm missing?
> 
> Thanks in advance
> Nico
> 

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