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Using the Graphics Card with the X.org radeon driver
Submitted by admin on Tue, 2006-01-17 13:15.
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Configuration
You can create new configuration files suitable for the radeon driver with the text-based xorgconfig tool or run
X -configure
to let X.org probe your hardware and write a configuration file, alternatively you can also use the graphic application xorgcfg to change configuration parameters. Better backup /etc/X11/xorg.conf before using either of these utilities.
Supported modes for multi-monitor setups
Attached at the bottom of the page you can find the xorg.conf files I use for the various multi-monitor modes that the radeon driver supports. A few notes:
- the external display I use has a max. resolution of 1280x1024, if your monitor supports less be sure to check the HorizSync, VertRefresh, CRT2HSync and CRT2VSync options.
- I have configured my input devices (TouchPad, Trackpoint, external mouse) with their special files in /dev/input and not /dev/input/mice. There's a good chance that your file-to-device mapping looks different, so check if you're using the correct device files in /dev/bus/input/devices. Or just use /dev/input/mice in which case you'll lose the ability to configure some settings per device.
- TV-Out is currently not supported by the opensource radeon driver, use the fglrx driver if you need this feature.
- real dual-head support (as in two seperate independent screens) seems to be broken at the moment, see bug #332548 in the Debian bug tracking system.
| Attachment | Size |
|---|---|
| xorg.conf.radeon.clone | 4.12 KB |
| xorg.conf.radeon.bigdesktop | 4.1 KB |
| xorg.conf.radeon.singlehead | 3.89 KB |
this is a rather annoying thing about X, that it can't detect hotplugged input devices (people are working on XInputHotplug). And using the Linux kernel-based /dev/input/mice has problems too, see my Todo List (point 3), you get configurations that are overlapping between different devices.
Currently, I don't care much about it since I'm almost always using the TrackPoint (apart from CircularScrolling through large websites/documents with the Touchpad), but if you find a solution I'd very much like to hear about it.
Currently, I don't care much about it since I'm almost always using the TrackPoint (apart from CircularScrolling through large websites/documents with the Touchpad), but if you find a solution I'd very much like to hear about it.
Hi,
With the setup you use, when you start your laptop with the mouse not plugged in, then add your mouse later on - does it work?
Because that is why I'm using /dev/input/mice - this device node is always present at x11 start, while the mouse2 node will only be if I plug in my mouse before starting X11...