radeon(7)
NAME
radeon - ATI RADEON video driver
SYNOPSIS
Section "Device"
Identifier "devname"
Driver "radeon"
...
EndSection
DESCRIPTION
radeon is a Xorg driver for ATI RADEON based video cards. It contains
full support for 8, 15, 16 and 24 bit pixel depths, dual-head setup,
flat panel, hardware 2D acceleration, hardware 3D acceleration (except
R300 and IGP series cards), hardware cursor, XV extension, Xinerama
extension.
SUPPORTED HARDWARE
The radeon driver supports PCI and AGP video cards based on the follow-
ing ATI chips
R100 Radeon 7200
RV100 Radeon 7000(VE), M6
RS100 Radeon IGP320(M)
RV200 Radeon 7500, M7, FireGL 7800
RS200 Radeon IGP330(M)/IGP340(M)
RS250 Radeon Mobility 7000 IGP
R200 Radeon 8500, 9100, FireGL 8800/8700
RV250 Radeon 9000PRO/9000, M9
RS300 Radeon 9100 IGP
RS350 Radeon 9200 IGP
RV280 Radeon 9200PRO/9200/9200SE, M9+
R300 Radeon 9700PRO/9700/9500PRO/9500/9600TX, FireGL X1/Z1 (2D
only)
R350 Radeon 9800PRO/9800SE/9800, FireGL X2 (2D only)
R360 Radeon 9800XT (2d only)
RV350 Radeon 9600PRO/9600SE/9600, M10/M11, FireGL T2 (2D only)
RV360 Radeon 9600XT (2d only)
RV370 Radeon X300, M22 (2d only)
RV380 Radeon X600, M24 (2d only)
R420 Radeon X800 (2d only)
R423 Radeon X800 PCIE (2d only)
CONFIGURATION DETAILS
Please refer to xorg.conf(4) for general configuration details. This
section only covers configuration details specific to this driver.
The driver auto-detects all device information necessary to initialize
the card. However, if you have problems with auto-detection, you can
specify:
VideoRam - in kilobytes
MemBase - physical address of the linear framebuffer
IOBase - physical address of the MMIO registers
ChipID - PCI DEVICE ID
In addition, the following driver Options are supported:
Option "SWcursor" "boolean"
Selects software cursor. The default is off.
Option "NoAccel" "boolean"
Enables or disables all hardware acceleration.
The default is to enable hardware acceleration.
Option "Dac6Bit" "boolean"
Enables or disables the use of 6 bits per color component when
in 8 bpp mode (emulates VGA mode). By default, all 8 bits per
color component are used.
The default is off.
Option "VideoKey" "integer"
This overrides the default pixel value for the YUV video overlay
key.
The default value is 0x1E.
Option "UseFBDev" "boolean"
Enable or disable use of an OS-specific framebuffer device
interface (which is not supported on all OSs). MergedFB does
not work when this option is in use. See fbdevhw(7) for further
information.
The default is off.
Option "AGPMode" "integer"
Set AGP data transfer rate. (used only when DRI is enabled)
1 -- x1 (default)
2 -- x2
4 -- x4
others -- invalid
Option "AGPFastWrite" "boolean"
Enable AGP fast write.
(used only when DRI is enabled)
The default is off.
Option "BusType" "string"
Used to replace previous ForcePCIMode option. Should only be
used when driver's bus detection is incorrect or you want to
force a AGP card to PCI mode. Should NEVER force a PCI card to
AGP bus.
PCI -- PCI bus
AGP -- AGP bus
PCIE -- PCI Express (falls back to PCI at present)
(used only when DRI is enabled)
The default is auto detect.
Option "DDCMode" "boolean"
Force to use the modes queried from the connected monitor.
The default is off.
Option "DisplayPriority" "string"
Used to prevent flickering or tearing problem caused by display
buffer underflow.
AUTO -- Driver calculated (default).
BIOS -- Remain unchanged from BIOS setting.
Use this if the calculation is not correct
for your card.
HIGH -- Force to the highest priority.
Use this if you have problem with above options.
This may affect performence slightly.
The default value is AUTO.
Option "MonitorLayout" "string"
This option is used to overwrite the detected monitor types.
This is only required when driver makes a false detection. The
possible monitor types are:
NONE -- Not connected
CRT -- Analog CRT monitor
TMDS -- Desktop flat panel
LVDS -- Laptop flat panel
This option can be used in following format:
Option "MonitorLayout" "[type on primary], [type on secondary]"
For example, Option "MonitorLayout" "CRT, TMDS"
Primary/Secondary head for dual-head cards:
(when only one port is used, it will be treated as the primary
regardless)
Primary head:
DVI port on DVI+VGA cards
LCD output on laptops
Internal TMDS port on DVI+DVI cards
Secondary head:
VGA port on DVI+VGA cards
VGA port on laptops
External TMDS port on DVI+DVI cards
The default value is undefined.
Option "MergedFB" "boolean"
This enables merged framebuffer mode. In this mode you have a
single shared framebuffer with two viewports looking into it.
It is similar to Xinerama, but has some advantages. It is
faster than Xinerama, the DRI works on both heads, and it sup-
ports clone modes.
Merged framebuffer mode provides two linked viewports looking
into a single large shared framebuffer. The size of the frame-
buffer is determined by the Virtual keyword defined on the
Screen section of your XF86Config file. It works just like reg-
ular virtual desktop except you have two viewports looking into
it instead of one.
For example, if you wanted a desktop composed of two 1024x768
viewports looking into a single desktop you would create a vir-
tual desktop of 2048x768 (left/right) or 1024x1536
(above/below), e.g.,
Virtual 2048 768 or Virtual 1024 1536
The virtual desktop can be larger than larger than the size of
the viewports looking into it. In this case the linked view-
ports will scroll around in the virtual desktop. Viewports with
different sizes are also supported (e.g., one that is 1024x768
and one that is 640x480). In this case the smaller viewport
will scroll relative to the larger one such that none of the
virtual desktop is inaccessable. If you do not define a virtual
desktop the driver will create one based on the orientation of
the heads and size of the largest defined mode in the display
section that is supported on each head.
The relation of the viewports in specified by the CRT2Position
Option. The options are Clone , LeftOf , RightOf , Above , and
Below. MergedFB is enabled by default if a monitor is detected
on each output. If no position is given it defaults to clone
mode (the old clone options are now deprecated, also, the option
OverlayOnCRTC2 has been replaced by the Xv attribute
XV_SWITCHCRT; the overlay can be switched to CRT1 or CRT2 on the
fly in clone mode).
The maximum framebuffer size that the 2D acceleration engine can
handle is 8192x8192. The maximum framebuffer size that the 3D
engine can handle is 2048x2048.
Note: Page flipping does not work well in certain configurations
with MergedFB. If you see rendering errors or other strange
behavior, disable page flipping. Also MergedFB is not compatible
with the UseFBDev option.
The default value is undefined.
Option "CRT2HSync" "string"
Set the horizontal sync range for the secondary monitor. It is
not required if a DDC-capable monitor is connected.
For example, Option "CRT2HSync" "30.0-86.0"
The default value is undefined.
Option "CRT2VRefresh" "string"
Set the vertical refresh range for the secondary monitor. It is
not required if a DDC-capable monitor is connected.
For example, Option "CRT2VRefresh" "50.0-120.0"
The default value is undefined.
Option "CRT2Position" "string"
Set the relationship of CRT2 relative to CRT1. Valid options
are: Clone , LeftOf , RightOf , Above , and Below
For example, Option "CRT2Position" "RightOf"
The default value is Clone.
Option "MetaModes" "string"
MetaModes are mode combinations for CRT1 and CRT2. If you are
using merged frame buffer mode and want to change modes (CTRL-
ALT-+/-), these define which modes will be switched to on CRT1
and CRT2. The MetaModes are defined as CRT1Mode-CRT2Mode
(800x600-1024x768). Modes listed individually (800x600) define
clone modes, that way you can mix clone modes with non-clone
modes. Also some programs require "standard" modes.
Note: Any mode you use in the MetaModes must be defined in the
Screen section of your XF86Config file. Modes not defined there
will be ignored when the MetaModes are parsed since the driver
uses them to make sure the monitors can handle those modes. If
you do not define a MetaMode the driver will create one based on
the orientation of the heads and size of the largest defined
mode in the display section that is supported on each head.
Modes 1024x768 800x600 640x480
For example, Option "MetaModes" "1024x768-1024x768
800x600-1024x768 640x480-800x600 800x600"
The default value is undefined.
Option "OverlayOnCRTC2" "boolean"
Force hardware overlay to clone head.
The default value is off.
Option "NoMergedXinerama" "boolean"
Since merged framebuffer mode does not use Xinerama, apps are
not able to intelligently place windows. Merged framebuffer
mode provides its own pseudo-Xinerama. This allows Xinerama
compliant applications to place windows appropriately. There
are some caveats. Since merged framebuffer mode is able to
change relative screen sizes and orientations on the fly, as
well has having overlapping viewports, pseudo-Xinerama, might
not always provide the right hints. Also many Xinerama compli-
ant applications only query Xinerama once at startup; if the
information changes, they may not be aware of the change. If
you are already using Xinerama (e.g., a single head card and a
dualhead card providing three heads), pseudo-Xinerama will be
disabled.
This option allows you turn off the driver provided pseudo-Xin-
erama extension.
The default value is FALSE.
Option "MergedXineramaCRT2IsScreen0" "boolean"
By default the pseudo-Xinerama provided by the driver makes the
left-most or bottom head Xinerama screen 0. Certain Xinerama-
aware applications do special things with screen 0. To change
that behavior, use this option.
The default value is undefined.
Option "MergedDPI" "string"
The driver will attempt to figure out an appropriate DPI based
on the DDC information and the orientation of the heads when in
merged framebuffer mode. If this value does not suit you, you
can manually set the DPI using this option.
For example, Option "MergedDPI" "100 100"
The default value is undefined.
Option "IgnoreEDID" "boolean"
Do not use EDID data for mode validation, but DDC is still used
for monitor detection. This is different from NoDDC option.
The default value is off.
Option "PanelSize" "string"
Should only be used when driver cannot detect the correct panel
size. Apply to both desktop (TMDS) and laptop (LVDS) digital
panels. When a valid panel size is specified, the timings col-
lected from DDC and BIOS will not be used. If you have a panel
with timings different from that of a standard VESA mode, you
have to provide this information through the Modeline.
For example, Option "PanelSize" "1400x1050"
The default value is none.
Option "PanelOff" "boolean"
Disable panel output.
The default value is off.
Option "EnablePageFlip" "boolean"
Enable page flipping for 3D acceleration. This will increase
performance but not work correctly in some rare cases, hence the
default is off.
Note: Page flipping does not work well in certain configurations
with MergedFB. If you see rendering errors or other strange
behavior, disable page flipping.
Option "ForceMinDotClock" "frequency"
Override minimum dot clock. Some Radeon BIOSes report a minimum
dot clock unsuitable (too high) for use with television sets
even when they actually can produce lower dot clocks. If this is
the case you can override the value here. Note that using this
option may damage your hardware. You have been warned. The fre-
quency parameter may be specified as a float value with standard
suffixes like "k", "kHz", "M", "MHz".
Option "RenderAccel" "boolean"
Enables or disables hardware Render acceleration. This driver
does not support component alpha (subpixel) rendering. It is
only supported on Radeon series up to and including 9200
(9500/9700 and newer unsupported). The default is to enable
Render acceleration.
Option "SubPixelOrder" "string"
Force subpixel order to specified order. Subpixel order is used
for subpixel decimation on flat panels.
NONE -- No subpixel (CRT like displays)
RGB -- in horizontal RGB order (most flat panels)
BGR -- in horizontal BGR order (some flat panels)
This option is intended to be used in following cases:
1. The default subpixel order is incorrect for your panel.
2. Enable subpixel decimation on analog panels.
3. Adjust to one display type in dual-head clone mode setup.
4. Get better performance with Render acceleration on digital
panels (use NONE setting).
The default is NONE for CRT, RGB for digital panels
Option "DynamicClocks" "boolean"
Enable dynamic clock scaling. The on-chip clocks will scale
dynamically based on usage. This can help reduce heat and
increase battery life by reducing power usage. Some users
report reduced 3D preformance with this enabled. The default is
off.
SEE ALSO
Xorg(1), xorg.conf(4), xorgconfig(1), Xserver(1), X(5)
AUTHORS
Authors include: ...
X.Org Version 6.8.2 RADEON(7)
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