I tried a bit different kickstart line and it works! In ubuntu-installer/amd64/boot-screens/txt.cfg:
default install label install menu label ^Install menu default kernel ubuntu-installer/amd64/linux append http_proxy="http://192.168.1.1:80" ks=http://192.168.1.1/kickstart/ks.cfg vga=normal initrd=ubuntu-installer/amd64/initrd.gz -- quiet -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1575652 Title: PXE install prefixes /cdrom to squashfs location, fails to find it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/live-installer/+bug/1575652/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs