xserver-xorg-video-all fails to install from ubuntu-12.04-alternate-amd64.iso

[David]

To reproduce:
- Download ubuntu-12.04-alternate-amd64.iso, sha256sum: f8d54df0afbab6a6248f6e2bcab3e68f01c04d52b0bb1f889d880ad3bc881ccb
- Burn it to a USB flash drive from a completely up-to-date Ubuntu 10.04 LTS with UNetbootin
- Install on a machine with no network connectivity

Current behaviour:
- xserver-xorg-video-all fails to install with an error message saying it was because two of its dependencies were not found: xserver-xorg-video-ati and xserver-xorg-video-nouveau

Expected behaviour:
- The install completes successfully

Thoughts:
I suspect this is because, whilst present on the iso, their filenames have been truncated:

./pool/main/x/xserver-xorg-video-ati/xserver-xorg-video-ati_6.14.99~git20111219.aacbd629-0ubuntu2_.deb

and

./pool/main/x/xserver-xorg-video-nouveau/xserver-xorg-video-nouveau_0.0.16+git20111201+b5534a1-1build2.deb

i.e. the filename does not end "_amd64.deb"

[Malcolm Scott (malcscott)]

ISO9660 Joliet extensions have a filename length limit of 64 characters (http://en.wikipedia.org/wiki/Joliet_%28file_system%29) which is probably the cause. Should the CDs be built with Rock Ridge extensions as well to increase the limit to 255 (http://en.wikipedia.org/wiki/Rock_Ridge)?

[Christian Csar (cacsar)]

This bug also affects Xubuntu's amd64 alternate image.
I'd have to rate the bug as pretty serious (if I had the power to do so). Unless I'm very much mistaken a new ISO needs to be spun up.
In case the implications of this bug are not clear:
1. Everyone who runs the built in integrity check will see it fail.
2. Everyone who attempts a normal alternate installation will see their installation fail after wasting an hour or so.

In short this really needs to be fixed for 12.04, and almost certainly deserves immediate attention.

[Anders Einar Hilden (kagee)]

Possibly the same as https://bugs.launchpad.net/ubuntu/+source/ubiquity-slideshow-ubuntu/+bug/989902 ?

[Anders Einar Hilden (kagee)]

Workaround: Rename the files (xserver-xorg-video-ati, xserver-xorg-video-radeon, xserver-xorg-video-nouveau) to their proper names on the USB flash drive manually.