Kubuntu doesn't prompt for a password on encrypted LVM boot

Bug #966450 reported by Tom on 2012-03-27
This bug affects 1 person
Affects Status Importance Assigned to Milestone
debian-installer (Ubuntu)

Bug Description

When installing the kubuntu image as part of the iso testing (kubuntu/daily/20120327/precise-alternate-amd64.iso) using the alternate installer from the daily builds for March 27, 2012, I attemted to make a full-disk encrypted setup using LVM. I used the instructions from the isotesting testcase: http://testcases.qa.ubuntu.com/Install/AlternateEncryptedLvm

The install went perfectly. However, when I rebooted, the system showed a console with the error: "error: no video mode activated." instead of a prompt for the LVM encryption password. I left it for awhile with no change. At this point, I simply typed in the password for the LVM encryption, and the system then continuted to boot normally.

To try something out, I pushed the down arrow key, this caused the size of the console text to change, and also output the prompt for the LVM password (with two astricks '*' as if the single down arrow had typed two keys). I tried pushing the down arrow again, and got a KDE themed GUI for entering the LVM encryption password, this time with 4 astricks filled in. Pushing the arrow key further cycled between the console and GUI, each time adding two more astricks. I was able to use the backspace button to clean out the prompt and enter my password.

After getting into the system, I tested it (everything was working fine) then rebooted. I experienced the same symptoms (just a blank screen) after each boot.

There is a workaround to this bug (press the down arrow), however, you can't exactly look it up if you're stuck during the boot process.

The hardware profile for this machine can be found here: http://teeks99.com/keep/lab_hwprofile.html

Ubuntu QA Website (ubuntuqa) wrote :

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:

tags: added: iso-testing
Phill Whiteside (phillw) wrote :

Marked as Duplicate of 966403

Tom (teeks99) wrote :

At first I didn't think it was the same (just a similar problem), but after playing around more, this may be a duplicate of https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/966403

Tom (teeks99) wrote :

Oops, apparently I hadn't updated the page in 20+hrs.

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