Many times the kernel developers have been asked the distribution they use on their computers or their preferred desktop environment. Although sometimes they are reluctant to say it so as not to give a false sense of favoritism towards some projects or others, it is also true that on other occasions they are totally open when it comes to saying their preferred distribution, their favorite desktop environment or their work tools everyday.
Although we know that Torvalds uses multiple teams at home at work, including a Macbook that he has running Linux, obviously now the creator has talked about the equipment he uses for his travels and as a mobile development tool (and what our colleagues at ubunlog have echoed as well). It is a Dell XPS 13 Developer Edition computer, optimized to work with Ubuntu and with quite high performance for its work programming the kernel and coordinating the project.
Looking at the desktop environment, it seems that Linus Torvalds doesn't even like GNOME, neither Plasma, nor Unity, projects that he has criticized in some past moments for certain changes that the creator did not like at all, as you well know. Instead, Linus finds himself comfortable with Cinnamon. The desktop that was created for Linux Mint and that coupled with Ubuntu makes a friendly and comfortable environment for Torvalds.
The laptop screen that Torvalds has is 13 inches, enough to work and have greater mobility when traveling to events. And this reduced space, compared to other larger screens, has been used thanks to the project that we have mentioned. In fact, on other occasions Linus has made pleasant statements about the Linux Mint distribution ... worse it seems that he stays with the heart of Canonical.
I hope this does not involve the suspicion or criticism of many (such as the staunch defenders of 100% free distros), as it is a respectable choice like any other.