hi Farhan Ahmed,

X4 developers do not include Sis 6215C because its obsolete.

Solution for Sis 6215C
======================

Step1. Configure the SiS card as if it were supported by skipping 
all tests using Xconfigurator.

Step2. Manually changing the driver from "sis" to "vesa" in 
/etc/X11/XF86Config-4.

To configure SiS 6215 under RedHat:

Run "Xconfigurator"

Choose SiS SG86C205 or SiS SG86C215 depending on your setup.

Choose monitor if not auto detected.

In the "Screen Configuration" page, choose "Don't Probe".

Choose the correct amount of video memory from the list.

Choose "No Clockchip Setting" for the Clockchip Configuration.

Select the following Video Modes - "1024x768", "800x600" and 
"640x480" all at 16bits.

Skip "Xconfigurator will now start X to test your configuration". 
Do not try to "test" your X configuration. It will not work.

Once you are back at the shell prompt. Edit the file 
/etc/X11/XF86Config-4 using an editor. Scroll down to the 
following block:

Section "Device"
         Identifier "SiS SG86C215"
         Driver "sis"
         BoardName "Unknown"
            # This is a cheap version of 86c205. I am not sure if 
acceleration works
        # Option "no_accel" # Use this if acceleration is causing 
problems
            # Option "no_BitBlt" # Use this if acceleration is causing 
problems
            # Option "fifo_moderate"
            # Option "fifo_conserv"
            # Option "fifo_aggresive"
EndSection

Change it to look like this:


Section "Device"
         Identifier "SiS SG86C215"
                # Change "sis" to "vesa"
         Driver "vesa"
                # Add the VideoRAM option - 1024 for 1MB and 2048 for 2MB.
                VideoRAM 2048
         BoardName "Unknown"
EndSection

Please note that the X4 uses "/etc/X11/XF86Config-4" and not 
"/etc/X11/XF86Config" for its configuration.

Try starting X with the command "startx". Use "CTRL+ALT+Keypad 
Plus" and "CTRL+ALT+Keypad Minus" to change monitor resolutions.

Hope this helps,

saket deshmukh


On Thu, 27 Jun 2002 Farhan Ahmed wrote :
>hey,
>
>can someone send me a working copy of the XF86Config file? i have 
>a super vga
>compatible monitor (Mtek) and Sis6215C as the display adapter .. 
>i tried using
>xf86config but it produces a faulty file ...
>
>also, does anyone know if there is a lug in lucknow? if there is, 
>can someone
>please send me the contact info ? thanks!!!
>
>tia,
>
>cheers, farhan.
>
>ps: im running redhat linux 7.2 running kernel 2.4.7-10.. does it 
>support com4?
>me modem's on com4 and somehow wvdialconf does not detect it.. 
>any suggestions?
>
>---------------------------
>Farhan Ahmed
>9486 Farinon Center,
>Lafayette College,
>Easton, PA 18042
>Ruef 319 (ahmedf)
>
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