Netboot installation of Ubuntu 15.04 fails, "The installer failed to download a file from the mirror."

[bugproxy]

Problem Description
=====================
Cannot perform a netboot installation of Ubuntu 15.04. Shortly after choosing United Kingdom for archive mirror country, then selecting ports.ubuntu.com, and entering our proxy (http://10.33.11.31:3128), the following error message is displayed:

Download installer components
The installer failed to download a file from the mirror. This may be
a problem with your network, or with the mirror. You can choose to
retry the download, select a different mirror, or cancel and choose
another installation method.

Downloading a file failed:
Retry
Change mirror
Cancel

---uname output---
N/A (unable to install)

Machine Type = 8247-22L (PowerKVM guest)

Steps to Reproduce
=============================
1. ssh to bamkvm (see system access info below)
2. Run `virsh start --console bu14g1`
3. Choose the "Install Ubuntu 15.04" option
4. Proceed through the installer, enter http://10.33.11.31:3128 as the proxy
5. Observe error

Install method: Netboot via DHCP

Install disk info: QEMU-img raw file stored on a Solstice array

Install ISO Information: vivid-server-ppc64el.iso

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1408925/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2015-01-30 19:26 EDT-------
*** Bug 120790 has been marked as a duplicate of this bug. ***

[Mathieu Trudel-Lapierre (cyphermox)]

Is there a mention anywhere of which file could not be retrieved?

Please attach /var/log/syslog from the installing system, as this should include sufficient information to know which file or which step of the installation process failed.

Thanks!

[Dave Heller (hellerda)]

Hi M,

This was dup of bug 1403982 and is fixed now. Sorry that was not made clear. This can be closed now. Thx!

[Mathieu Trudel-Lapierre (cyphermox)]

Thanks, closing.