# SiS

This page describes how to get Silicon Integrated Systems (SiS) chipset graphical adapters working on Arch Linux:

## Packages

You will need main xf86-video-sis with driver and it's good idea to install sisctrl (gui tool for setting video modes). Some cards not supported by sis driver package can work with xf86-video-sisusb and xf86-video-sisimediaAUR.

## lspci

Output of lspci should look like this (depends on present model):

    01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter

## Modules

There are couple of kernel modules related to SiS video cards:

    $ lsmod | grep sis | sed -re 's#^([a-zA-Z0-9_-]*) *.*#\1#g' | xargs modinfo | grep 'filename:'
    ...
    filename:       /usr/lib/modules/kernel-version/kernel/drivers/char/agp/sis-agp.ko.gz
    filename:       /usr/lib/modules/kernel-version/kernel/drivers/char/agp/agpgart.ko.gz
    ...

where `kernel-version` is the kernel version currently installed on your system. For example kernel 3.7.1.1

You will probably need to load only the sis-agp kernel module.

## xorg.conf

Here are few most important sections from /etc/X11/xorg.conf

1. Load some modules:

    Section "Module"
      Load  "dbe"
      Load  "i2c"
      Load  "bitmap"
      Load  "ddc"
      Load  "dri"
      Load  "extmod"
      Load  "freetype"
      Load  "glx"
      Load  "int10"
      Load  "vbe"
    EndSection

1. Device specification:

    Section "Device"
      Identifier "Card0"
      Driver "sis"
      Card        "** SiS (generic)     [sis]"
      BusID "PCI:1:0:0"

      Option "UseFBDev" "true"
      Option "EnableSisCtrl" "yes"
      Option "ForceCRT1Type" "LCD"
      Option "ForceCRT2Type" "NONE"
      #Option "CRT2Detection" "true" #For me this worked better than forceing the detection. If you use this comment out the two Force lines above this.
      Option "CRT1Gamma" "on"
      Option "CRT2Gamma" "on"
      Option "Brightness" "0.000 0.000 0.000"
      Option "Contrast" "0.000 0.000 0.000"
      Option "CRT1Saturation" "0"
      Option "XvOnCRT2" "yes"
      Option "XvDefaultContrast" "2"
      Option "XvDefaultBrightness" "10"
      Option "XvDefaultHue" "0"
      Option "XvDefaultSaturation" "0"
      Option "XvDefaultDisableGfxLR" "no"
      Option "XvGamma" "off"
    EndSection

1. Enable Direct Rendering:

    Section "DRI"
      Mode         0666
    EndSection

#### Enable SSE

enable or force the SSE use in SiS Card

Add

     Option "UseSSE" "yes"

to `Device` section

#### SiS 671 card

Add

     Option "UseTiming1366" "yes"

to `Device` section.

### Dual head configuration

You need 2 device sections to enable dualhead mode. Sis specific options should be placed into master head device section.

    Section "Monitor"
      Identifier   "CRT1"
      ModelName    "PANEL"
      Option       "DPMS"
      VendorName   "LCD"
      HorizSync    31-60
      VertRefresh  40-60
    EndSection

    Section "Monitor"
      Identifier   "CRT2"
      ModelName    "tv"
      Option       "DPMS"
      VendorName   "tv"
    EndSection

    Section "Screen"
      DefaultDepth 24
      SubSection "Display"
        Depth      24
        Modes      "1024x768".
      EndSubSection
      Device       "Device[0]"
      Identifier   "Screen[0]"
      Monitor      "CRT2"
    EndSection

    Section "Screen"
      DefaultDepth 24
      SubSection "Display"
        Depth      24
        Modes      "1024x768".
      EndSubSection
      Device       "Device[1]"
      Identifier   "Screen[1]"
      Monitor      "CRT1"
    EndSection

    Section "Device"
      BoardName    "630"
      BusID        "PCI:1:0:0"
      Driver       "sis"
      Identifier   "Device[1]"
      Screen       1
      VendorName   "SiS"
    EndSection

    Section "Device"
      BoardName    "630"
      BusID        "PCI:1:0:0"
      Driver       "sis"
      Identifier   "Device[0]"
      Screen       0
      VendorName   "SiS"
      Option "EnableSisCtrl" "true"
    EndSection

    Section "ServerLayout"
      Identifier   "Layout[dual]"
      ...
      Option       "Clone" "off"
      Screen       "Screen[0]"
      Screen       "Screen[1]" RightOf "Screen[0]"
      Option       "Xinerama" "off"
    EndSection

Category:

- X server