Using Clever Compression Tricks, Ubuntu 22.04 will bring the desktop to Raspberry Pi 4 2GB users.
Those who don't want to wait until April may enable zswap
and modify the parameters immediately, giving all models a performance boost.
|Sounds great, how do I enable Desktop On Raspberry Pi?
Canonical has announced that zswap, or swap-based memory
compression, will be enabled by default for its Raspberry Pi Ubuntu builds,
bringing the full desktop experience to the Raspberry Pi 4 Model B 2GB — and
has also provided a guide for setting it up yourself if you can't wait for the
next release.
Canonical's interest in the Raspberry Pi series of
single-board computers was evident when it published Ubuntu 19.10 "Eoan
Ermine" with official images for the Raspberry Pi 2, 3, and 4 after
promising "complete official support" for the device. Following these
server-centric images, Ubuntu 20.10 "Groovy Gorilla" was released,
which included a desktop image with a complete graphical user interface as
standard for the first time.
The catch: "On a Raspberry Pi 4 (with 4GB or 8GB RAM),
you can do everything an ordinary desktop user would expect," Canonical's
Rhys Davies said of the release, implying that the 1GB and 2GB devices would be
less capable.
Canonical is now looking to add official support for the 2GB
model by enabling zswap, a method of improving performance by creating
high-priority swap devices that compress currently-unused memory contents to
save space without the long delays and potentially excessive write operations
that come with a swap file or partition on microSD.
Those using previous releases, meantime, may use the Ubuntu
blog's tutorial to activate zswap right now — and, if wanted, swap out the
defaults for those in Ubuntu 22.04, which include the use of LZ4 compression to
increase speed even further.
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