Provided by: xserver-xorg-driver-savage_2.0.2.3-0ubuntu1_i386 bug


       savage - S3 Savage video driver


       Section "Device"
         Identifier "devname"
         Driver "savage"


       savage  is  an  Xorg  driver for the S3 Savage family video accelerator
       chips.  2D, 3D, and Xv acceleration is supported on  all  chips  except
       the  Savage2000  (2D only).  Dualhead operation is supported on MX, IX,
       and SuperSavage chips.  The savage driver supports PCI and  AGP  boards
       with the following chips:

       Savage3D        (8a20 and 8a21) (2D, 3D)

       Savage4         (8a22) (2D, 3D)

       Savage2000      (9102) (2D only)

       Savage/MX       (8c10 and 8c11) (2D, 3D, Dualhead)

       Savage/IX       (8c12 and 8c13) (2D, 3D, Dualhead)

       SuperSavage/MX  (8c22, 8c24, and 8c26) (2D, 3D, Dualhead)

       SuperSavage/IX  (8c2a,  8c2b,  8c2c,  8c2d,  8c2e,  and  8c2f) (2D, 3D,

       ProSavage PM133 (8a25) (2D, 3D)

       ProSavage KM133 (8a26) (2D, 3D)

       Twister (ProSavage PN133)
                       (8d01) (2D, 3D)

       TwisterK (ProSavage KN133)
                       (8d02) (2D, 3D)

       ProSavage DDR   (8d03) (2D, 3D)

       ProSavage DDR-K (8d04) (2D, 3D)


       Please refer to xorg.conf(5x) for general configuration details.   This
       section only covers configuration details specific to this driver.

       The following driver Options are supported:

       Option "HWCursor" "boolean"

       Option "SWCursor" "boolean"
              These  two  options  interact  to  specify  hardware or software
              cursor.  If the  SWCursor  option  is  specified,  any  HWCursor
              setting  is  ignored.   Thus, either "HWCursor off" or "SWCursor
              on" will force the use of the software cursor.  On Savage/MX and
              Savage/IX  chips  which are connected to LCDs, a software cursor
              will be forced, because the  Savage  hardware  cursor  does  not
              correctly track the automatic panel expansion feature.  Default:
              hardware cursor.

       Option "NoAccel" "boolean"
              Disable  or  enable  acceleration.   Default:  acceleration   is

       Option "Rotate" "CW"

       Option "Rotate" "CCW"
              Rotate  the  desktop  90  degrees clockwise or counterclockwise.
              This  option  forces  the  ShadowFB  option  on,  and   disables
              acceleration.  Default: no rotation.

       Option "ShadowFB" "boolean"
              Enable  or  disable  use  of the shadow framebuffer layer.  This
              option disables acceleration.  Default: off.

       Option "LCDClock" "frequency"
              Override  the  maximum  dot  clock.   Some  LCD  panels  produce
              incorrect results if they are driven at too fast of a frequency.
              If UseBIOS is on, the BIOS will usually restrict  the  clock  to
              the correct range.  If not, it might be necessary to override it
              here.  The frequency parameter may be specified as an integer in
              Hz  (135750000), or with standard suffixes like "k", "kHz", "M",
              or "MHz" (as in 135.75MHz).

       Option "CrtOnly" "boolean"
              This option disables output to the LCD and enables output to the
              CRT  port only.  It is useful on laptops if you only want to use
              the CRT port or to force the CRT output only  on  desktop  cards
              that use mobile chips. Default: auto-detect active outputs

       Option "UseBIOS" "boolean"
              Enable  or  disable  use  of  the  video  BIOS  to change modes.
              Ordinarily, the savage driver tries to use the video BIOS to  do
              mode  switches.   This  generally produces the best results with
              the mobile chips (/MX and /IX), since  the  BIOS  knows  how  to
              handle  the  critical  but  unusual  timing  requirements of the
              various LCD panels supported by  the  chip.   To  do  this,  the
              driver searches through the BIOS mode list, looking for the mode
              which most  closely  matches  the  xorg.conf  mode  line.   Some
              purists  find  this  scheme  objectionable.  If you would rather
              have the savage driver use your mode line timing  exactly,  turn
              off  the  UseBios option.  Note: Use of the BIOS is required for
              dualhead operation.  Default: on (use the BIOS).

       Option "ShadowStatus" "boolean"
              Enables the use of a shadow status register.  There  is  a  chip
              bug in the Savage graphics engine that can cause a bus lock when
              reading the engine status register under  heavy  load,  such  as
              when  scrolling text or dragging windows.  The bug affects about
              4% of all Savage users without DRI and a large fraction of users
              with  DRI.   If your system hangs regularly while scrolling text
              or dragging windows, try turning this option on.  This  uses  an
              alternate  method of reading the engine status which is slightly
              more expensive, but avoids the problem.   When  DRI  is  enabled
              then  the  default  is  "on"  (use shadow status), otherwise the
              default is "off" (use normal status register).

       Option "DisableCOB" "boolean"
              Disables the COB (Command Overflow Buffer) on savage4 and  newer
              chips.   There  is  supposedly  a  HW cache coherency problem on
              certain savage4 and newer chips that renders the COB useless. If
              you are having problems with 2D acceleration you can disable the
              COB, however you will lose some  performance.   3D  acceleration
              requires  the  COB to work.  This option only applies to Savage4
              and newer chips.  Default: "off" (use COB).

       Option "BCIforXv" "boolean"
              Use the BCI to copy and reformat Xv pixel data.  Using  the  BCI
              for  Xv  causes  graphics  artifacts on some chips.  This option
              only applies to Savage4 and prosavage/twister  chips.   Default:
              on  for  prosavage and twister (use BCI for Xv); off for savage4
              (do not use the BCI for Xv).

       Option "AGPMode" "integer"
              Set AGP data transfer rate.  (used only when DRI is enabled)
              1      -- x1 (default)
              2      -- x2
              4      -- x4
              others -- invalid

       Option "AGPSize" "integer"
              The amount of  AGP  memory  that  will  allocated  for  DMA  and
              textures  in  MB. Valid sizes are 4, 8, 16, 32, 64, 128 and 256.
              The default is 16MB.

       Option "DmaMode" "string"
              This option influences in which way DMA (direct  memory  access)
              is used by the kernel and 3D drivers.
              Any      -- Try command DMA first, then vertex DMA (default)
              Command  -- Only use command DMA or don’t use DMA at all
              Vertex   -- Only use vertex DMA or don’t use DMA at all
              None     -- Disable DMA
              Command and vertex DMA cannot be enabled at the same time. Which
              DMA mode is actually used in the end also  depends  on  the  DRM
              version  (only  >=  2.4.0 supports command DMA) and the hardware
              (Savage3D/MX/IX doesn’t support command DMA).

       Option "DmaType" "string"
              The type of memory that will be used by the 3D  driver  for  DMA
              (direct memory access).
              PCI    -- PCI memory (default on PCI cards)
              AGP    -- AGP memory (default on AGP cards)
              "AGP" only works if you have an AGP card.

       Option "BusType" "string"
              The bus type that will be used to access the graphics card.
              PCI    -- PCI bus (default on PCI cards)
              AGP    -- AGP bus (default on AGP cards)
              "AGP" only works if you have an AGP card. If you choose "PCI" on
              an AGP card the AGP bus speed is not set and no AGP aperture  is
              allocated. This implies DmaType "PCI".




       Xorg(1x), xorg.conf(5x), xorgconfig(1x), Xserver(1x), X(7)


       Authors   include   Tim   Roberts   (   and   Ani  Joshi
       ( for this version, and Tim Roberts and S.  Marineau
       for the original driver from which this was derived.