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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 (firstname.lastname@example.org)
and Ani Joshi (email@example.com) 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. See shadowfb(4)
for further information.
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 "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 register).
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