where are bug reports from ubuntu-bug saved? Or how can I upload ubuntu-bug files as further information in launchpad?
you can add more information from comment field . if you want to upload any files can choose attachments.
look at the image
yes you can save the BUG reports to a file and you can upload them manually
1 . Offline Method For a bug report about a system crash:
For a bug report about any other issue:
2.Adding apport-collect information to an existing Launchpad bug
3.Adding attachments to an existing Launchpad bug for Linux pkg's
for non-linux pkg's