Created attachment 64702 [details]
"Microsoft Comfort Curve Keyboard 2000" work fine with kernel <=3.0.0-rc5
[ 3.032583] input: Microsoft Comfort Curve Keyboard 2000 as /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/input/input4
[ 3.032670] generic-usb 0003:045E:00DD.0002: input,hidraw1: USB HID v1.11 Keyboard [Microsoft Comfort Curve Keyboard 2000] on usb-0000:00:1d.0-2/input0
[ 3.056415] input: Microsoft Comfort Curve Keyboard 2000 as /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/input/input5
[ 3.056489] generic-usb 0003:045E:00DD.0003: input,hidraw2: USB HID v1.11 Device [Microsoft Comfort Curve Keyboard 2000] on usb-0000:00:1d.0-2/input1
Created attachment 64712 [details]
There doesn't seem to be anything in dmesg that would indicate problems in hid/input.
Could you please verify with evtest that there are really no events coming out of the kernel?
Created attachment 65492 [details]
evtest in kernel 2.6.39rc7
With input event4 not work hotkey, not message evtest
/dev/input/event4: Microsoft Comfort Curve Keyboard 2000
With input event5 not work hotkey, yes message evtest
/dev/input/event5: Microsoft Comfort Curve Keyboard 2000
Created attachment 65522 [details]
dmesg 3.0.0rc7 + pach of Ubuntu (Kenel Defaul)
I upgrade to kernel 3.0.0-5 (3.0.0rc7) And Work Fine!
Thanks, please close report.
Ok. Thank you for testing with the latest release.