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# Logitech devices
KERNEL=="hiddev*", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="c70[345abce]|c71[34bc]",
RUN+="hid2hci --method=logitech-hid --devpath=%p"

KERNEL=="hidraw*", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="c70[345abce]|c71[34bc]",
RUN+="hid2hci --method=logitech-hid --devpath=%p"

(If you need help editing a file, see bottom section.)

Change this line:

# Logitech devices
KERNEL=="hiddev*", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="c70[345abce]|c71[34bc]",
RUN+="hid2hci --method=logitech-hid --devpath=%p"

to

KERNEL=="hidraw*", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="c70[345abce]|c71[34bc]",
RUN+="hid2hci --method=logitech-hid --devpath=%p"

I have made the changed sections BOLD. I also turned bluetooth off from the icon in the system tray.

After making this change, I turned on my wireless keyboard, unplugged its bluetooth dongle, plugged it back in, paired the keyword with the dongle, and a few seconds later it worked. I did not even have to reboot.

HOW TO EDIT THE FILE (for those who need help with this stage)

New users to Linux may have trouble editing text files at first. Ill try to be simple, and this guide is for people using Gnome or KDE.

The simplest way is using a user friendly program. In Gnome (which is normal Ubuntu), the default text editor is gedit. In KDE (in Kubuntu) it is Kate. Also, this is a protected system file, so you need to use special Administrator privileges before you can edit it. Dont worry. This is simply.

In KDE, you need to find the "Run Command" option the Application menu. (The App menu is usually in the lower left-hand corner, with a colorful K-button.) In KDE4s new menu style, the "Run Command" is (currently) under the Computer section, near the top of the small list. Find the option and click it.

kdesu kate /lib/udev/rules.d/70-hid2hci.rules

The kdesu program tells the system you want to run the text editor (kate) with Admin access. You will be prompted for your individual user password, which you enter. Then kate should open with a file ready for you. (This is the /lib/udev/rules.d/70-hid2hci.rules file which we told kate to open for us.) If this file does not open, you can open it manually by going to menu File -> Open... and then navigating to the / root directory, down to lib and so on until you find the file 70-hid2hci.rules.

Edit the file as directed earlier in this article. Save the file, close the file (menu File -> Close), and then finally exit Kate.

GNOME

gksu gedit /lib/udev/rules.d/70-hid2hci.rules

The gksu tells the system you want to run the text editor (gedit) with Admin access. You will be prompted for your individual user password, which you enter. Then gedit should open with a file ready for you. (This is the /lib/udev/rules.d/70-hid2hci.rules file which we told gedit to open for us.) If this file does not open, you can open it manually by going to menu File -> Open... and then navigating to the / root directory, down to lib and so on until you find the file 70-hid2hci.rules.

Edit the file as directed earlier in this article. Save the file, close the file (menu File -> Close), and then finally exit gedit. You can close the Terminal also.

Hope that helps.