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savage - S3 Savage video driver
savage is an Xorg driver for the S3 Savage family video accelerator
chips. The savage driver supports PCI and AGP boards with the following
refer to xorg.conf(5x)
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
- Twister (ProSavage PN133)
- TwisterK (ProSavage KN133)
- ProSavage DDR
- ProSavage DDR-K
The following driver
Options are supported:
Authors include Tim Roberts (email@example.com) and
Ani Joshi (firstname.lastname@example.org) for this version, and Tim Roberts and S. Marineau
for the original 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.
- Disable or enable acceleration. Default: acceleration
- 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"
- Enable or disable use of the shadow framebuffer layer. This option
disables acceleration. Default: off.
- Option "LCDClock" "frequency"
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 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. 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. 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
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