OH DANG it! I didn't see your doing this from a gdm desktop. NEVER MIND. Vincent Lefevre wrote:
[adding Thomas to Cc, as this concerns xterm] FYI, libxt/1:1.1.0-1 also breaks xterm: XAUTHORITY is removed from the environment, meaning that I can no longer start X applications from xterm when gdm3 is used. As libxt/1:1.1.0-2 fixes the problem (which appeared with the upgrade to libxt/1:1.1.0-1) and other terminals didn't have any problem, I assume this is the same bug.