SAVAGE(4) UNIX Programmer's Manual SAVAGE(4)
NAME
savage - S3 Savage video driver
SYNOPSIS
Section "Device"
Identifier "devname"
Driver "savage"
...
EndSection
DESCRIPTION
savage is an XFree86 driver for the S3 Savage family video
accelerator chips. The savage driver supports PCI and AGP
boards with the following chips:
Savage3D (8a20 and 8a21)
Savage4 (8a22)
Savage2000 (9102)
Savage/MX (8c10 and 8c11)
Savage/IX (8c12 and 8c13)
ProSavage PM133 (8a25)
ProSavage KM133 (8a26)
Twister (ProSavage PN133)
(8d01)
TwisterK (ProSavage KN133)
(8d02)
ProSavage DDR (8d03)
ProSavage DDR-K (8d04)
CONFIGURATION DETAILS
Please refer to XF86Config(5) 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
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"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 enabled.
Option "Rotate" "CW"
Option "Rotate" "CCW"
Rotate the desktop 90 degrees clockwise or counter-
clockwise. 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 pro-
duce incorrect results if they are driven at too fast
of a frequency. If UseBIOS is on, the BIOS will usu-
ally restrict the clock to the correct range. If not,
it might be necessary to override it here. The fre-
quency 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 "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 pro-
duces 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 XF86Config 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.
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
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dragging windows. The bug affects about 4% of all
Savage users. 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. Default: off (use normal status
register).
FILES
savage_drv.o
SEE ALSO
XFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7)
AUTHORS
Authors include Tim Roberts (timr@probo.com) and Ani Joshi
(ajoshi@unixbox.com) for the 4.0 version, and Tim Roberts
and S. Marineau for the 3.3 driver from which this was
derived.
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