[Bug 1040544] Re: Installer dialog does not come up

[ojordan]

I suspect this is only a radeon PowerPC problem.  Userspace Mode Setting
has been removed and the current kernel config doesn't allow KMS to
function (the radeonfb module is built-in).  What is happening is that
the fbdev driver is used instead in 8 bit pseudo colour.  Why that
causes ubiquity to not display anythng I don't know.  The window sort of
grabs the image of background or other windows/menus that are placed
over it, but doesn't display images of its own.

Using the yaboot parameters "video=ofonly radeon.agpmode=-1" (which
enables KMS and a functioning radeon driver) ubiquity works fine.

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https://bugs.launchpad.net/bugs/1040544

Title:
  Installer dialog does not come up

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  The graphical installer fails to bring up a usable box for
  installation.  See the attached screenshot.  This is from the PPC
  Desktop image from 20120821

  http://iso.qa.ubuntu.com/qatracker/milestones/219/builds/21606/downloads

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