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Droidian Running Debian on Android Phones Erik Inkinen Volla Community Days 2021 About me • My name is Erik Inkinen • Going to upper secondary school in Finland • Interested in computers and open source software • A member of the Droidian team • Other team members: Eugenio Paolantonio, Giuseppe Corti, Erfan Abdi • A fan of the GNOME desktop Droidian and its mission • Running Debian on Android phones • Bringing phosh on those devices • As it is easier to adapt Halium on a new device than to run mainline kernel on that device, Droidian may provide Mobian- like environment on a wider range of devices Overview of technologies used by Droidian • Halium and libhybris • The modem stack: oFono and oFono2MM • The UI/UX: phosh and GNOME apps The base • Halium and libhybris let us use Android drivers • They are used also in Ubuntu Touch • Debian serves as the base distribution • Debian is a popular distribution The modem stack • oFono is used as in other Halium based distributions • oFono talks to Android RILd • oFono2MM is developed by us in order to let ModemManager dependent applications use the modem • However, calls are handled directly through oFono The UI/UX • phoc/phosh • phoc is a Wayland compositor written using wlroots • phosh is a mobile shell using GTK as a widget library • GNOME stack • The UI/UX is based on the GNOME stack • The core applications are the same as on the GNOME desktop • A familiar and unified UX for GNOME users Recap • Easy to port thanks to Halium 9.0 and soon Halium 10 • Based on Debian • UX is familiar to GNOME users Thank You Droidian Volla Community Days 2021.

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