I was using ibus-avro with ibus input method to write Bengali in Ubuntu 12.04. Recently I have upgraded Ubuntu from 12.04 to 12.10, now ibus-avro was removed. I have tried to install it again but was getting error message as follows Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: ibus-avro : Depends: gir1.2-gjsdbus-1.0 but it is not installable Please help Regards Apurba