Dear Readers,
two weeks before I compiled my first XFree86 on a "linux from scratch" system on an i686 architecture with kernel 2.4.26. I didn't get an Optical USB Mouse running. Searching for days in the net I didn't find a solution, only the same problem often described.
Sorry, if there is a solution and I'm only to stupid to find. But if there isn't something maybe I can help others by sharing my experience.
OK, here a code snippet from my XF86Config:
Section "InputDevice" Identifier "OptMouse" Driver "mouse" Option "CorePointer" "true" Option "Device" "/dev/mouse" Option "Protocol" "ImPS/2" ... EndSection
And here the output of "insmod hid" - important for the solution:
grmpf kernel: usb.c: registered new driver hiddev grmpf kernel: usb.c: registered new driver hid grmpf kernel: usb-uhci.c: interrupt, status 3, frame# 1242 grmpf kernel: hiddev0: USB HID v1.00 Mouse [Microsoft Microsoft IntelliMouse® Optical] on usb1:2.0 grmpf kernel: hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik grmpf kernel: hid-core.c: USB HID support drivers
Note: "input" was compiled in the kernel and not as module. All other modules were also compiled and loaded correctly. It was really double checked a lot. But the mouse didn't work.
After reading $KERNELSRC/Documentation/usb/hiddev.txt nobody should get the idea - to rmmod all usb related modules - to issue a "mknod /dev/usb/hiddev0 c 180 96" - to insmod all usb related modules - to issue a "cat /dev/usb/hiddev0"
But I did and was really happy after moving the mouse to got some garbage output on my screen.
I changed my XF86Config:
Section "InputDevice" ... Option "Device" "/dev/usb/hiddev0" ... EndSection
After starting XFree the mouse cursor was moving ... not as expected, only from the middle of the screen to the left down screen corner independently what I did. But it was moving.
(Today I found a posting in a german forum from people who figured out the same: http://www.linuxforen.de/forums/showthread.php?t=130539 )
After this findings I changed the USB configuration of my kernel and took *absolutly* care that: /dev/hiddev raw HID device support (CONFIG_USB_HIDDEV) is set to *[N]*:
USB Human Interface Device (full HID) support (CONFIG_USB_HID) [M/n/?] HID input layer support (CONFIG_USB_HIDINPUT) [Y/n/?] /dev/hiddev raw HID device support (CONFIG_USB_HIDDEV) [N/y/?]
I recompiled the kernel, installed it, rebooted the machine and studied the output of "insmod hid" in my logfiles:
grmpf kernel: usb.c: registered new driver hid grmpf kernel: usb-uhci.c: interrupt, status 3, frame# 311 grmpf kernel: input: USB HID v1.00 Mouse [Microsoft Microsoft IntelliMouse® Optical] on usb1:2.0 grmpf kernel: hid-core.c: v1.8.1 Andreas Gal, Vojtech Pavlik <vojtech@xxxxxxx> grmpf kernel: hid-core.c: USB HID support drivers
Of course, when recompiling the kernel I removed "input" from the kernel and compiled it as a module. (But I think this has no influence to the problem and related solution. Searching google with: "hiddev0: USB HID"+Mouse will bring a lot of results with lines from logfiles like: ... input0,hiddev0: USB HID v1.00 Mouse ... and related complains.)
And yes, with:
Section "InputDevice" ... Option "Device" "/dev/mouse" ... EndSection
XFree and mouse worked fine after these changes on my system.
So that was my way to make the things working. Hope that helps anybody out there.
Additional remarks ================== The behaviour described above seems not i86 specific. There are also complains from Suse-Sparc users. When I was searching two weeks before I got the impression that complaining started with a 2.4.19-preXY kernel. (READ: http://www.cs.helsinki.fi/linux/linux-kernel/2002-34/1217.html - Maybe brings an other aspects of a solution to our focus). But today I found a complain about a 2.4.18 kernel. It could be simple a social behaviour that 2.4.18 isn't found so often with this problem. In 2.4.18 the hiddev module was in an experimental state and the help said: "If unsure, say N.". In 2.4.26 nothing is mentioned about "Experimental" and the help says: "If unsure, say Y.". ;-)
HTH & Best Regards Andreas Woitzick
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