On Thu, Dec 05, 2002 at 02:39:15PM +0100, Raffaele Sandrini wrote: > Hi > > I did several tests here with our different PS/2 mice. I had the problem, > that not every mouse was > usable trough XFree86 with the same config. > > I found out that i am able to use every PS/2 mouse with eather ther "PS/2" > driver or the "IMPS/2" > driver (im talking about the "Protocol" option in the XF86Config of Xfree > 4.2.1). > > All older mice _only_ worked with the PS/2 driver and all newer mouse > (logitech weel mouse, M$ weel > mouse and co) worked _only_ with the IMPS/2 Driver. That means that i am not > abel to use the PS/2 > driver vor every mouse.
The ImPS/2 protocol has an extra byte: the mouse sends packets of 4 bytes as opposed to 3 for straight PS/2. So the protocols are not compatible. However, it should be possible to initialise an ImPS/2 mouse into straight PS/2 mode. X 4.2 doesn't reset the mouse before initialising it, so not all mice listen to their initialisation sequences. > As we have _many_ systems here and i don't want to stick a mouse deffinitly > to a computer I need > something wich is able to probe if there is a newer or older mouese > connected to the system and > wrtites the correct values to the XF86Config. > > Is there something like that in the Debian dirsti wich could be > automatically run on sartup? If not, > does somebody have an idea how i could solve that issue? You need to do it before X starts, or X will grab /dev/psaux. You need tools to write byte values to /dev/psaux and read them back in. You can use echo -ne '\nnn' (nnn = octal value) to write and od -tx1 -w1 to read, but it's a bit of a pain in the butt because the reader has to be running in the background writing to the console while you run the writer in the foreground. I wrote a couple of little programs that suited me, probably someone else will be able to suggest a better method. What you have to do is: - send FF to /dev/psaux. This resets the mouse. It should then respond with FA AA 00. - send the following sequence: F3 C8 F3 64 F3 50 F2 The mouse should respond with FA to each byte and then give an additional byte, which is 00 for a standard PS/2 mouse, 03 for an intellimouse and 04 for a 5-button mouse. - send F4 to enable the mouse. If this is a pain I might write a program to do it if nobody can suggest easier console tools than what I know about. Pigeon -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
