I am new to Linux device drivers. After installing the driver in Ubuntu 14.04, I'm seeing this in dmesg
or my module:
module verification failed: signature and/or required key missing-tainting kernel
I followed this guide on the gentoo wiki. I didn't have the same problem in Ubuntu 12.04.
Following the guide resulted in another warning message like
UNKNOWN request key:"some key".
How can I resolve this problem?