Hmm, unfortunately without the Xorg.0.log from the case where the second HDMI appeared, it won't be possible to debug this issue. However, if you ever do reproduce it (and esp. if you can do so on Jaunty), feel free to reopen with that info. Having 'xrandr --verbose' and 'sudo get-edid|parse-edid' would help as well.
Hmm, unfortunately without the Xorg.0.log from the case where the second HDMI appeared, it won't be possible to debug this issue. However, if you ever do reproduce it (and esp. if you can do so on Jaunty), feel free to reopen with that info. Having 'xrandr --verbose' and 'sudo get-edid| parse-edid' would help as well.