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Sun, Jun 30th - 10:45AM

Lubuntu willl NOT ship Mir


LubuntuLubuntu project refused to use the graphics stack-based Mir / XMir

Following the Kubuntu developers participants based on the shell LXDE Lubuntu branch decided not to go to the graphic stack, based on the display server Mir. At least issues Lubuntu 13.10 and 14.04 will be shipped with the previously used graphics stack-based components X.Org, without the intervention of an intermediate layer XMir.

As a reason for not switching to Mir called the need to ensure the performance and hardware support that is acceptable for low-power systems. In the case of Mir OpenBox window manager would have to be replaced by a compositing window manager, and use the additional link XMir in the process of drawing. Recall that the company Canonical has decided to use the default Mir with a layer XMir already in the next issue of Ubuntu 13.10, considering that officials and the branch will also move to the new stack.

At present, work Mir / XMir marked as stable enough for inclusion in the release of Ubuntu, however the work on optimizing the performance is not yet complete, and there are some technical limitations such as the need for additional buffering stage through the use of an intermediate layer XMir. Conducted resource Phoronix tests show that the configuration of the Unity + XMir + Mir while running noticeably slower than running on top of X-Unity server. The failure of performance occurs when starting the modern 3D-applications, as well as in the performance of classical 2D-tests.

Lubuntu Blog




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Fri, Jun 28th - 8:31AM

Display server Mir in Ubuntu 13.10


Ubuntu LinuxThe company Canonical has decided to go to Mir by default in Ubuntu 13.10

Oliver Ries, who served as Director of Product Development Unity and Mir in the company Canonical, Ubuntu announced the transition to the use of the default display server Mir starting with the next release of Ubuntu 13.10, scheduled for October this year.

The rapid progress in the distribution of Mir explained intention supply a graphical environment based on Mir in the LTS-release Ubuntu 14.04, which requires additional stabilization technology in at least one intermediate release distribution.

In a situation of unavailability Mir by the time Ubuntu 13.10, the introduction of this technology in the desktop version of the distribution had to be postponed at least a year, before the release of Ubuntu 14.10, or decide on the issue of raw LTS-release, which is unacceptable for the implementation of plans to push editorial Ubuntu Touch, focused on use on tablets and smartphones. The first phones based on Ubuntu Touch is expected early next year, Canonical spur the transition to a single code base that forms the environment for different classes of devices (from smart phones to PCs), a wide range of screen resolution and system input (keyboard / mouse, touch screen , the remote control).

Development Mir is progressing quite rapidly, including Canonical constantly expands staff involved in the development of the project staff, which gives reason to believe that Mir will be brought to fully operational and stable states in the coming months. Moreover, according to Oliver Rice is now Mir has already met the criteria of quality and performance requirements for components are included in the release. Currently available for testing a prototype shell Unity 8, running on top of Mir, and also implemented the ability to run all the popular desktop environments using layer XMir. Instructions for running Mir in the current test builds of Ubuntu 13.10 can be found in this article.

In order to solve the problem of testing Mir before switching to release long-term support (LTS) and it does not disrupt the operation of the system, a compromise solution - Mir will be used by default, but a graphical desktop environment Unity will still use the X-server (in the distribution will ship to the default Unity 7). X.Org-server interaction and Mir will be based on the interlayer XMir, providing coverage of the input and output between Mir and the X-server (in fact XMir acts as a replacement driver input and output).

There will also be a special fallback-mode that allows you to organize the work without the intervention of Mir using conventional drivers X.Org. Fallback-mode will be applied in case of the lack of support in the graphics card Mir or install proprietary drivers, NVIDIA and AMD. Despite the fact that the support of Mir in the proprietary driver is not yet implemented, NVIDIA and AMD are going to provide similar support for the release of Ubuntu 14.04. In Ubuntu 14.04 LTS will continue to be used XMir, but support fallback-mode will be terminated. Starting with Ubuntu 14.10 distribution will fully switch to a graphical stack-based Mir and Unity 8, without the use of an additional layer.

In developing the community of official editions Ubuntu, such as Kubuntu, Xubuntu, Lubuntu, Ubuntu GNOME, etc., their work is also planned to organize on the basis of a single graphics stack with Ubuntu-based Mir and XMir. Support XMir will be implemented over five years under the LTS-release 14.04. The above statement Canonical representative disagrees with the statement project leader Kubuntu, who pointed out that this edition will not use the Mir and XMir, and relies on Wayland.

TAGS: Ubuntu Linux, Linux News, display server Mir, Kubuntu, Xubuntu, Lubuntu, Ubuntu GNOME






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