Notifications are displayed in the upper right corner of the screen in chronological order and are automatically closed 15 seconds after they appear (or can be manually closed immediately). It is also highlighted that a notification display system has been implemented, which can be used on the taskbar, in dashboard plugins, and in various applications. For boards with 1GB RAM, an alternative mode is provided that returns Openbox, in which the interface layout options are limited (for example, rectangular tooltips are displayed instead of rounded and there are no visual effects). Raspberry Pi boards with 2GB of RAM are seen to be sufficient for work, but less memory is no longer sufficient for a graphical environment.
The downside to switching to Mutter was the increased memory consumption. Previously, GTK2 handled the rounded corners of the tooltip, but in GTK3, these operations were delegated to the composite manager. Mutter's composite window manager is enabled by default. The transition required the implementation of replacements for the old GTK2 features and slightly affected the appearance of the widgets, but the developers made sure that the interface kept the familiar look. Until now, the migration from the desktop to GTK3 was held back by the fact that many things, especially those related to customizing the appearance of widgets, were much easier to implement in GTK2, and some useful functions used in PIXEL were removed in GTK3. The reason for the migration is the desire to get rid of the overlap in the distribution of different versions of GTK: in Debian 11, GTK3 is actively used, but the PIXEL desktop was based on GTK2. Raspberry Pi project developers unveiled the release of the new Fall update version for Raspberry Pi OS distribution (Raspbian) which in this new version was migrated to the base of the package «Bullseye» Debian 11 (previously Debian 10 was used).Īll desktop components PIXEL and the proposed applications have been moved to use the GTK3 library instead of GTK2.
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