Dan Nicholson wrote:
On Sun, Apr 26, 2009 at 4:09 PM, Phil Endecott
<spam_from_x...@chezphil.org> wrote:
I have a Griffin Powermate; it's a USB "knob" that you can use for
scrolling etc. ÃÂ This morning the computer that it was attached to
died. ÃÂ I'm now having trouble getting to work with the substitute machine.
(**) Griffin Powermate: always reports core events
(**) Griffin Powermate: Device:
"/dev/input/by-id/usb-Griffin_Technology__Inc._Griffin_PowerMate-event-misc"
(WW) Griffin Powermate: Don't know how to use device
(II) UnloadModule: "evdev"
(EE) PreInit returned NULL for "Griffin Powermate"
So, what does "Don't know how to use device" mean?
This means that the evdev driver didn't recognize it to be either a
pointer, a keyboard or a touchscreen during it's probing routine.
Looking at a photo online, I can't really tell how you'd classify it,
but there could certainly be bugs in the detection logic. If you have
the source, take a look in src/evdev.c:EvdevProbe.
http://cgit.freedesktop.org/xorg/driver/xf86-input-evdev/tree/src/evdev.c
- Right?
This seems like a regression since the previous version of this driver,
which was able to manage this device. What can be done?
(BTW the kernel driver is here:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/input/misc/powermate.c)
Cheers, Phil.
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