This can also be observed in /var/log/dist-upgrade/main.log:
VarLogDistupgradeMainlog.txt:2014-12-16 20:21:57,758 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py ('Terminal' object has no attribute 'spawn_sync')
This can also be observed in /var/log/ dist-upgrade/ main.log:
VarLogDistupgra deMainlog. txt:2014- 12-16 20:21:57,758 ERROR got error from PostInstallScript ./xorg_ fix_proprietary .py ('Terminal' object has no attribute 'spawn_sync')