Currently supported releases are Xenial/16.04 and Yakkety/16.10 https://launchpad.net/~xorg-edgers/+archive/ubuntu/ppa
No Trusty/14.04 (anymore). That is why.
Currently supported releases are Xenial/16.04 and Yakkety/16.10 https://launchpad.net/~xorg-edgers/+archive/ubuntu/ppa
No Trusty/14.04 (anymore). That is why.