Deepin, a beautiful Linux distribution based on Debian stable, released version 20.2 a day ago.
Deepin 20.2 features the LTS Kernel 5.10 and stable Kernel 5.11. In Grub boot menu, you can select to boot either Kernel as you want.
The new release now integrates the Debian 10.8 stable package repository. Thanks to code optimization, you will get less memory occupation for core apps, faster response, enhanced system performance, and smoother user experiences.
Also, Deepin 20.2 introduced a Downloader app with multiple download protocols support, including HTTP(s), FTP(s), BT, magnet link, etc. And the downloads are extremely fast.
The free and open-source planetarium software Stellarium 0.21.0 was released today. Here’s how to install it in Ubuntu 21.04, Ubuntu 20.10, Ubuntu 20.04, Ubuntu 18.04 via PPA.
The new release completed the work on accurate planet axes, including Lunar libration. It also features visualisation of Earth shadow for Lunar eclipses, the latest algorithms for planet magnitudes. Planets are now scalable and Solar glare switchable for didactic applications.
Other changes include:
Better texture for the Lunar surface.
Enhanced Calendars plugin.
Replaced “arabic” by more accurate “al-Sufi” skyculture.
Added lines for the Invariable Plane and Projected Solar Equator.
Added solar altitude to planetary feature nomenclature.
Added new 4k texture for the Moon (required re-balancing planet shader brightness)
Added more cardinal points.
Added a new sky culture based on Al-Sufi “Book of Fixed Stars” written ~ 964 AD.
Added Old Hindu calendars
Added Islamic (algorithmic) and Hebrew calendar.
Added French Revolution calendar (arithmetic version)
Added Persian (arithmetic) calendar
And much more other changes, see the release note for details.
How to Install Stellarium 0.21.0 via PPA:
The Stellarium developers team maintains an official Ubuntu PPA with the latest packages for all current Ubuntu releases.
1. Open terminal either by pressing Ctrl+Alt+T on keyboard or by searching for ‘terminal’ from application menu. When it opens, run command to add the PPA:
GNU Emacs text editor 27.2 was released as a new maintenance release.
Emacs 27.2 is a bug-fix release with no new features. According to the changelog, it changed the behavior of the user option ‘resize-mini-frames‘. If set to a non-nil value which isn’t a function, resize the mini frame using the new function ‘fit-mini-frame-to-buffer’ which won’t skip leading or trailing empty lines of the buffer.
Emacs now ignores modifier keys when IME input is used. By default, pressing Ctrl, Shift, and Alt keys while using IME input will no longer apply the modifiers to the produced characters, as there are IMEs which use keys with modifiers to input some characters. Customize the variable ‘w32-ignore-modifiers-on-IME-input’ to nil to get back the old behavior.
And the user option ‘tramp-completion-reread-directory-timeout’ is now obsolete.
How to Install Gnu Emacs in Ubuntu:
For those prefer the classic apt repository, keep an eye on the Kevin Kelley’s PPA, though it’s not been updated at the moment of writing.
Emacs is also available as the containerized Snap package, which is however at version 27.1 at the moment.
The community maintained Flatpak package has built Emacs 27.2 for Linux users. Ubuntu 20.04 and higher users can open terminal and run following commands one by one to install it:
Install flatpak framework if you don’t have it:
sudo apt install flatpak
Add flathub repository which hosts the flatpak packages: