Hi all, I have a laptop keyboard problem - it fails to reconnect the
keyboard on opening after closing.

MS Surface pro 4 with type keyboard.

The keyboard connects correctly on bootup or resume from hibernate (when
open).

Close keyboard (removes power), open keyboard and it no longer works.
Requires a reboot (or hibernate/resume) for it it to work again.

On opening the keyboard, the kernel detects it, it shows up in lsusb.

Oct  6 05:57:15 bunyip kernel: usb 1-7: Product: Surface Type Cover
Oct  6 05:57:15 bunyip kernel: input: Microsoft Surface Type Cover
Keyboard as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/0003:045E:07E8.0003/input/input29
Oct  6 05:57:15 bunyip kernel: input: Microsoft Surface Type Cover
Consumer Control as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/0003:045E:07E8.0003/input/input31
Oct  6 05:57:15 bunyip kernel: input: Microsoft Surface Type Cover
Touchpad as
/devices/pci0000:00/0000:00:14.0/usb1/1-7/1-7:1.0/0003:045E:07E8.0003/input/input33
Oct  6 05:57:15 bunyip kernel: hid-multitouch 0003:045E:07E8.0003:
input,hiddev96,hidraw0: USB HID v1.11 Keyboard [Microsoft Surface Type
Cover] on usb-0000:00:14.0-7/input0

It looks like it changes input when reopening but the event framework
fails to re-enumerate it.

Ive tried restarting udev but no luck.

Where should I look next?

BillK

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