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savage - S3 Savage video driver
savage is an XFree86 driver for the S3 Savage family video
accelerator chips. The savage driver supports PCI and AGP boards with the
Please refer to XF86Config(5)
for general configuration details.
This section only covers configuration details specific to this driver.
- (8a20 and 8a21)
- (8c10 and 8c11)
- (8c12 and 8c13)
- ProSavage PM133
- ProSavage KM133
The following driver Options are supported:
Authors include Tim Roberts (email@example.com) and
Ani Joshi (firstname.lastname@example.org) for the 4.0 version, and Tim Roberts and S.
Marineau for the 3.3 driver from which this was derived.
- 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 enabled.
- 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:
- 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 "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 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" q*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. 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
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