ATI Mobility Radeon X300

2005-11-06T13:31:39Z

217.9.135.13: /* Features */

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=== ATI Mobility Radeon X300 ===
This is a ATI video adapter
=== Features ===
* Chipset: ATI M222
* PCI ID: 1002:5460
* PCI Express x16345
* 32 or 1064MB GDDR1 on-chip video memory
* "HyperMemory": can use system memory for graphics processing
* "PowerPlay 4.0" technology for dynamic engine cloc, memory clock and core voltage, refresh rate reduction and thermal status reporting.
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See [http://www.ati.com/products/radeonx300/specs.html specifications] from ATI, as well as the [http://www.ati.com/products/embedded/mobilityradeonx300/M22-CSP64_Product_Snapshot.pdf "snapshot" data sheet] (referes to the 32MB on-chip, 128MB "HyperMemory" version).

=== Linux driver ===
Use Driver "radeon" in the xorg.conf file - it works at least for xorg 6.8.2, maybe older versions too. Currently (as of xorg 6.8.2) this will only give you 2D-acceleration, though. To enbable 3D acceleration as well you need to use the binary ATI driver [[fglrx]].

There is also an open source Radeon [http://r300.sf.net/ driver] with 3D acceleration support (merged into [http://dri.freedesktop.org here] recently), but it's still highly experimental and does not support all features.

==== ThinkPad LCD ====
Display on the internal LCD works as long as you set the monitor settings correct.

==== External VGA port ====
There are known problems. The driver from ATI turns off the switching between internal and external port.

To make switching with, use the "vesa" driver built into X.org instead of the ATI or "radeon" drivers. This loses acceleration and some capabilities.

Alternatively, start X without an external monitor, and then connect the external monitor. Both displays will be active, and cannot be switched off until you exit X. Note that if the external monitor is connected when X starts, the LCD will be deactivated and you will need to restart X. To have a reasonable refresh rate on the external monitor (the default is the LCD's 50Hz), use the following in {{path|/etc/X11/xorg.conf}}:

Section "Device"
Identifier "Videocard0"
VendorName "Videocard vendor"
BoardName "ATI Radeon Mobility X300"

Driver "radeon"
Option "DynamicClocks" "on"

Option "MergedFB" "on"
Option "CRT2Hsync" "50-75"
Option "CRT2VRefresh" "30-82"
EndSection

(Tested wth Fedora Core 4 on ThinkPad T43).

See also the related discussion about [[Additional options for the radeon driver]].

==== S-Video port (TV-out) ====
Linux support status is unknown.

There is some generic advise [http://odin.prohosting.com/wedge01/gentoo-radeon-faq.html#4_tvout here] about making it work using the proprietary [[Fglrx]] driver.

==== DVI port ====
??

=== Proprietary ATI driver ===
The [[fglrx]] driver adds 3D acceleration.

=== Linux kernel Framebuffer driver ===

radeonfb might cause problems with hardware acceleration under X on some systems, vesafb and vesafb-tng on the other hand has been reported to work just fine.

=== Clock rates, voltage and power===
{| border="1" cellspacing="0" cellpadding="2"
|+ Clock rates, voltages and power {{footnote|1}}
! Mode !! core freq !! memory freq !! voltage !! idle !! 3DMarks (Windows, 1600x1200, LCD only)
|-
| Performance || 300 || 230 MHz || 1.15V || 2.98 W || 8.28 W
|-
| Balanced || 183 || 210 MHz || 1.00V || 1.71 W || 3.88 W
|-
| Battery || 120 || 105 MHz || 1.00V || 1.61 W || 2.74 W
|}

{| border="1" cellspacing="0" cellpadding="2"
|+ ATI driver for Windows {{footnote|2}}
! Mode !! core freq !! memory freq
|-
| Performance || 297.00 || 229.50
|-
| Balanced || 209.25 || 182.25
|-
| Battery || 104.63 || 121.50
|}

Experimentally, the difference between the Performance and Battery settings under Linux with <tt>DynamicClocks</tt> enabled is roughly 0.3W and 3-4 degrees in GPU temperature on a ThinkPad {{T43}}. Further frequency reduction leads to display flickering or corruption.

Clock rates can be changed through [[Rovclock]], and are also affected by the [[How to make use of Graphics Chips Power Management features|<tt>DynamicClocks</tt> option to the <tt>radeon</tt> driver]].

=== ThinkPads this chip may be found in ===
* {{R52}}
* {{T43}}
* {{Z60m}}

{{footnotes|
#according to the [http://www.ati.com/products/embedded/mobilityradeonx300/M22-CSP64_Product_Snapshot.pdf "Snapshot" data sheet] (which refers to the 32MB on-chip, 128MB "HyperMemory" version)
#inspected using [http://www.pbus-167.com/chc.htm Notebook Hardware Control]
}}

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ATI Mobility Radeon X300