Linux Mint 17.2 64bit “Rafaela”. Cinnamon desktop.
Linux Mint 17.2 64bit “Rafaela”. Cinnamon desktop.
http://www.linuxmint.com/rel_rafaela_...
New features in Linux Mint 17.2 Cinnamon
Linux Mint 17.2 is a long term support release which will be supported until 2019. It comes with updated software and brings refinements and many new features to make your desktop experience more comfortable to use.
Cinnamon 2.6
Core improvements
Desktop freezes
On supported hardware Cinnamon now uses a newer “cogl” API. This change is known to prevent some of the causes of desktop freezes observed in earlier releases.
In case of a freeze or if you need to restart Cinnamon for any reason, you can now do so via a keyboard shortcut. The default key combination is Ctrl+Alt+Escape. Pressing this combination of keys restarts nemo and cinnamon-settings-daemon in case they had crashed, and launches a brand new instance of the Cinnamon desktop. Unlike Ctrl+Alt+Backspace which terminates your session and brings you back to the login screen, Ctrl+Alt+Escape simply restarts Cinnamon itself, which means your session is exactly as it was, you don’t lose any work and all your windows and applications remain open.
logind/consolekit-upower support
You no longer need to recompile Cinnamon to choose between consolekit and logind support. This is done in gsettings and you can decide which relevant Cinnamon components use which session/power-management backend:
• Set org.cinnamon.desktop.session session-manager-uses-logind to true to make Cinnamon rely on logind to restart/shutdown/suspend/hibernate the computer from the shutdown dialog, or to false to restart/shutdown the computer via consolekit and suspend/hibernate via upower.
• Set org.cinnamon.desktop.session settings-daemon-uses-logind in a similar fashion to control suspending/hibernating on idle or via multimedia keys.
• Set org.cinnamon.desktop.session screensaver-uses-logind to true to make the screensaver listen to logind, or to false to make it listen to consolekit.
Linux Mint uses consolekit and upower by default but it is also compatible with logind. With MDM 2.0 and Cinnamon 2.6 you can now switch back and forth between the two and it should work well either way.
Responsiveness, load times and CPU usage
A huge amount of work was done to review the CPU usage in various parts of Cinnamon and many improvements were made. Performance was gained by optimizing how Cinnamon reacts to particular events and reducing the number of tasks or repeated tasks it performs. The menu, for instance, is refreshed about 6 times as less as before… signals resulting from connecting a USB device are grouped together and lead to 1 action, reducing 4 concurrent reactions into a single one. The docinfo part of Cinnamon, which handles “recent files”, was optimized a lot. We found out tiny features such as generating thumbnails for “recent” files in the application menu were very expensive in resources and dropping them led to significant reductions in CPU usage. Un-necessary calculations in the window management part of Cinnamon could also be dropped, leading to reduced idle CPU usage (about 40% reduction in the number of CPU wakes per second).
Loading times were also reviewed (this covered Cinnamon and MDM) and found to be excellent, except for the case where Cinnamon is loaded for the first time after a computer restart or shutdown. Whereas a normal Cinnamon initialization would typically take between 0 and 2 seconds, the very first one could take up to 40 seconds on some of our test systems. The reason was a lack of HDD read-cache, especially when it came to Gio appinfo and icon themes data. To reduce this initial load time, Cinnamon 2.6 introduces a preload mechanism which loads themes and app info asynchronously earlier on during the boot sequence. Distributions using non-standard icon themes can add them to /etc/cinnamon/preload/iconthemes.d/.
Finally, information was added to Looking glass logs to report the Cinnamon startup time as well as to indicate how long each enabled applet took to start.
Main components
Linux Mint 17.2 features Cinnamon 2.6, MDM 2.0, a Linux kernel 3.16 and an Ubuntu 14.04 package base.
LTS strategy
Linux Mint 17.2 will receive security updates until 2019.
Until 2016, future versions of Linux Mint will use the same package base as Linux Mint 17.2, making it trivial for people to upgrade.
Until 2016, the development team won't start working on a new base and will be fully focused on this one.
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