Hello Linux Geeksters. As you may know, Canonical has worked hard in the last couple of months on implementing Mir and XMir. Despite the fact that the initial plan was to release Ubuntu 13.10 Saucy Salamander with Mir/XMir, the Ubuntu developers have dropped the idea, for performance reasons.
Matthew Garrett, an important Red Hat developer that has brought UEFI support for the Linux Kernel has contested Mark Shuttleworth’s decision to the X.Org Server with Mir from the beginning. He has expressed his opinion on Mir and XMir, saying that the multi-monitor support isn’t the only reason why XMir is still unreliable. In his opinion, Mir does not work as it should on single-monitor systems either, since the input driver bug has not been properly fixed.
Among other issues, XMir does not support color profiles yet and does not have support for RandR to gesture some encodings. For more information, read Matthew’s blog article.
As a reminder, both Ubuntu 13.10 Saucy Salamander and Ubuntu Touch 1.0 will be released on the 17th of October, but only the mobile version of the Ubuntu system will be using Mir as default.
seen on lffl.org