New answers tagged sony
Sorry to say but you're affected by a bug that has existed since 2007 so I would stop looking for a solution and buy a camera that is compatible with Linux.
You have to install Ubuntu Touch specially designed for mobile devices. According to the wiki site your phone is supported. Go here for instructions and more info: https://wiki.ubuntu.com/Touch/Devices/haida
A list of supported devices are available at https://wiki.ubuntu.com/Touch/Devices. Your device, Xperia T2, is not explicitly mentioned but however, Xperia T (mint) is on the list. You may notice that most of the features are Work in Progress as of now. As for your second question, try contacting the maintainer of the image for Xperia T.
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