CDROM installation fails for ubuntu 14.04.3 if another CDROM of ubuntu version is attached to same system

[bugproxy]

== Comment: #0 - NAVEED A. UPPINANGADY SALIH <email address hidden> - 2016-02-24 09:23:59 ==
---Problem Description---
Two or more different versions (for example 14.04.3 and 15.04) of Ubuntu DVD/CDROM is attached to any Power system then installation fails after language selection as installer tries to mount other Ubuntu DVD/CDROM which is not supposed to happen and throws below error.

   ???????????????? [!!] Load installer components from CD ?????????????????
   ? ?
   ? No kernel modules were found. This probably is due to a mismatch ?
   ? between the kernel used by this version of the installer and the ?
   ? kernel version available in the archive. ?
   ? ?
   ? If you're installing from a mirror, you can work around this problem ?
   ? by choosing to install a different version of Ubuntu. The install ?
   ? will probably fail to work if you continue without kernel modules. ?
   ? ?
   ? Continue the install without loading kernel modules? ?
   ? ?
   ? <Go Back> <Yes> <No> ?
   ? ?
   ?????????????????????????????????????????????????????????????????????????

note: we used virtual dvd function from vios to attach two different versions of Ubuntu to our lpar.
I think this issue will even occur with two or more physical dvd with different ubuntu version <-- but we have not verified this

---uname output---
3.19.0-25-generic

Machine Type = 9119-MME

Contact Information = <email address hidden>

---boot type---
CDROM / ISO image

---Install repository type---
CDROM

---Point of failure---
Failed while accessing install media

== Comment: #5 - NAVEED A. UPPINANGADY SALIH <email address hidden> - 2016-02-25 01:56:35 ==

[bugproxy (bugproxy)]

Default Comment by Bridge

[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/1551078/+editstatus and add the package name in the text box next to the word Package.

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[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-03-11 00:11 EDT-------
Hello Canonical,

Can you please let us know if any more information is required from our side?

thanks and regards,
Brahadambal

[Steve Langasek (vorlon)]

The information in the bug is clear. However, it is unlikely that this bug will be resolved for 16.04. This is a function of the ISO detection that has been in place in Ubuntu since its inception; the nature of the image build process means there is no 100% reliable way to determine which CD is the "right" one, so the heuristics used can fail in the manner you describe if more than one Ubuntu CD is present on the system at install time.

I think the obvious workaround, which seems to have sufficed for everyone up to now, is to not leave multiple CDs in the system when installing. So I do not agree with the proposed "critical" severity.

[Steve Langasek (vorlon)]

I noted that I do not expect this bug to be fixed for 16.04, but I see you've reported it against 14.04.3. This is definitely not a bug that will be fixed in the 14.04 series.

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-03-15 05:40 EDT-------
lets document this and close the bug if there is no fix available.

------- Comment From <email address hidden> 2016-03-29 02:25 EDT-------
Hello Canonical,

Can you please document this issue and close this bug?

Thanks!

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-05-08 10:15 EDT-------
(In reply to comment #18)
> Hello Canonical,
>
> Can you please document this issue and close this bug?
>
> Thanks!

Hello Canonical,
Please confirm if this issue is documented. If yes, share the link, so that we will go ahead & close this bug.

Thanks!

[bugproxy (bugproxy)]

------- Comment From <email address hidden> 2016-07-18 07:01 EDT-------
Hello Canonical,

Can you please confirm if this issue is documented?

Thanks!

[Manoj Iyer (manjo)]

There is a very low probability that this bug will be addressed in Trusty or Xenial. Removing taco screen team as owner.

[Launchpad Janitor (janitor)]

[Expired for debian-installer (Ubuntu) because there has been no activity for 60 days.]