New answers tagged default
LightDM loads settings from multiple places. This list from the Ubuntu documentation page shows the load order, with later ones overriding earlier locations. LightDM configuration is provided by the following files: /usr/share/lightdm/lightdm.conf.d/.conf /etc/lightdm/lightdm.conf.d/.conf /etc/lightdm/lightdm.conf System provided configuration is stored in ...
I can't comment due to low rep. I had the exact same message "zynaddsubfx default io did not initialize defaulting to NULL backend." right after before installing Qjackctl, when executing zynaddsubfx. So it is not neccesary to have qjackctl installed to have the bug. But there is a "jack" thing that controls midi that probably is that what you are talking ...
I just had this and it still didn't work no matter how many times I tried variations...until I realized I had two /etc/default/grub files - one for each of my dual boot roots! And I had been editing the wrong one. So there's another file or variable out there somewhere that selects which file we are really using.
From the Ubuntu Package Index, the default version of: Python 2 is 2.7.9 for both 15.04 and 15.10. Python 3 is 3.4.3 for both 15.04 and 15.10.
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