On Sat 20 Jan 2018 at 03:25:00 +0900, Mark Fletcher wrote: > On Fri, Jan 19, 2018 at 02:33:23PM +0000, Brian wrote: > > On Fri 19 Jan 2018 at 22:10:39 +0900, Mark Fletcher wrote: > > > > > On Fri, Jan 19, 2018 at 06:43:10AM +0100, john doe wrote: > > > > > > > > > > So, I return to the essential question, which I led with in my original > > > post, which is which method does the installer use to set up networking, > > > and where can I find documentation on that so I can replicate it for my > > > wireless connection? > > > > The installer uses the netcfg udeb to configure networking; the files in > > the package are the documentation (AFAIK). For a wired connection netcfg > > produces a file /etc/network/interfaces for use with the installer which > > is something like > > > > allow-hotplug enp0s25 > > iface enp0s25 inet dhcp > > > > This file is transferred to the new system (mounted on /target) just > > before d-i finishes and booting into the new system takes place. > > > > If you had chosen to install over a wifi connection, interfaces would > > have looked like this: > > > > allow-hotplug wlx0060b3f580c4 > > iface wlx0060b3f580c4 inet dhcp > > wpa-ssid <access_point> > > wpa-psk <secret> > > > > I would preseed the installer to replace the interfaces file it puts on > > /target with this file. Any firmware for the wireless adaptor would also > > have to be transferred to /target/lib/firmware too. > > > > A fly in the ointment is the desktop you install (if any). If it brings > > in network-manager (MATE does) there is a possibility that there is no > > network at first boot. > > > > Thank you Brian -- this is exactly the information I was after. Much > appreciated, once again! > > To get out of the situation I'm in on those two machines, I just need to > hand-craft the interfaces file to something like what you have above, > with appropriate device, ssid and WPA password values substituted. For > these PARTICULAR systems, firmware doesn't seem to be a problem.
That's about it. The transferring of the interfaces file takes place in a late_command. I've not tried it myself but it should work and I intend to have a go tomorrow. If you felt adventurous you could remaster the install image to have the preseed file and other files on it. https://wiki.debian.org/ManipulatingISOs?highlight=%28remaster%29 -- Brian.
