There has been a lot of work in the latest years to modernize the Linux graphics stack so that it's both well designed and also ready to use the full power of modern and future GPUs. To start with, there're several drivers fighting to access the same resource (the graphics card): The fb-based console, the in-kernel DRM driver, the X.org userspace 2D driver.this situation leads to all class of problems and artifacts and suboptimal performance. On the other hand, the Linux/FOSS graphic stack is far from perfect, even for the traditional graphic stack design. There's a lot of GPU power that don't get used unless you run a game. Modern GPUs have a lot of processing power -more than the most powerful CPU in some specialized workloads- that traditionally has only been used by specialized applications using opengl/directx, like games and 3D design apps the 2D desktop implementations that are commonly found in computers kept using this modern graphic hardware in the same way they used the old graphics hardware which started the 'desktop revolution' in the 80-90's, ie. In the last decade graphics hardware has evolved at an astounding pace, and it's expected to improve even more in the future. Recommended articles about GEM: 'Memory management for graphics processors' and 'GEM v. Recommended article: A description of all the parts involved in the new graphics stack: 'EXA, UXA, DRI, GEM, TTM' Bigger filesystem/file sizes, extents, delayed allocation, multiblock allocation, improved block allocation algoritms, faster fsck, online defragmentation and faster and more robust journaling are the main features of this filesystem.Ī separate article has been written about Ext4: Ext4, the Fourth Extended File Systemġ.2. The backwards-compatible replacement of Ext3 has been declared as stable. Other sources tracking the kernel changes.Network: Transparent proxying, new drivers, DSA.Memory management Scalability improvements.Support for 'Ultra Wide Band' (UWB), Wireless USB and UWB-IP.

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