Same on me. Ubuntu 16.04 with latest updates at 20 September 2016.
openConnection: connect: No such file or directory
cannot connect to brltty at :0
Tried many workaround from this urls:
No one is helped. Helped Fullbuffer's suggestion with moving .cache
folder. Everything fine now.
By deleting from one to one folders in .cache I found that
compizconfig-1 subfolder causing the problems. You does not need to
delete entire cache, only this one.
For devs for further investigation of problem I attaching archive with
my .cache/compizconfig-1 folder.
** Attachment added: "archive with my .cache/compizconfig-1 folder"
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