Ubuntu
xorg-server package

lucid->precise upgrade holds back X.org video drivers

Bug #902077 reported by Martin Pitt
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
xorg-server (Ubuntu)
Fix Released
High
Martin Pitt
Precise
Fix Released
High
Martin Pitt

Bug Description

Upgrading lucid to precise desktop fails:

2011-12-08 06:50:02,921 DEBUG Installing 'xserver-xorg-video-all' (Distro KeepInstalledPkgs rule)
2011-12-08 06:50:02,975 ERROR Could not calculate the upgrade An unresolvable problem occurred while calculating the upgrade:
E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

This is probably due to

Package: libdrm-nouveau1a
Conflicts: libdrm-nouveau1

To ease apt's job, this should be something like

Breaks: libdrm-nouveau1
Replaces: libdrm-nouveau1

I'll confirm both the cause and the solution now.

Martin Pitt (pitti)
Changed in libdrm (Ubuntu Precise):
status: New → Incomplete
status: Incomplete → Triaged
assignee: nobody → Martin Pitt (pitti)
importance: Undecided → High
Jean-Baptiste Lallement (jibel)
tags: added: dist-upgrade lucid2precise qa-daily-testing
Martin Pitt (pitti)
summary: - lucid->precise upgrade failure due to libdrm-nouveau1a Conflicts:
+ lucid->precise upgrade holds back X.org video drivers
Revision history for this message
Martin Pitt (pitti) wrote :

On second look it doesn't seem to be that Conflicts:, it's something else.

affects: libdrm (Ubuntu Precise) → xorg (Ubuntu Precise)
Changed in xorg (Ubuntu Precise):
assignee: Martin Pitt (pitti) → nobody
Revision history for this message
Martin Pitt (pitti) wrote :

So, the reason is that xserver-xorg-video-{nv,v4l} do not exist any more, and thus it can't get rid of the "xserver-xorg-video-6" provides. For that we need to explicitly conflict to these two to clean these up on upgrade. I propose that -nouveau conflicts: -nv, and -vesa Conflicts: -v4l. Adding them to -video-all also works, but that wouldn't fix the upgrade for people who removed -video-all and only have a few drivers installed.

These two extra Conflicts: will fix the upgrade when universe is enabled. If only main and restricted are enabled, the upgrade still fails because a bunch of the older drivers went to universe. I still need to think about/discuss what to do there.

Revision history for this message
Martin Pitt (pitti) wrote :

For the case where only main is enabled, we need to add a quirk to the release upgrader: "If universe is not enabled, remove these packages:

  xserver-xorg-video-apm
  xserver-xorg-video-ark
  xserver-xorg-video-chips
  xserver-xorg-video-i128
  xserver-xorg-video-rendition
  xserver-xorg-video-s3virge
  xserver-xorg-video-tseng
  xserver-xorg-video-voodoo

These driverse went to universe since lucid. As lucid's -video-all depends on them, we probalby need to do this:

  - remove xserver-xorg-video-all, and above packages
  - do release upgrade
  - reinstall -video-all

Changed in update-manager (Ubuntu Precise):
assignee: nobody → Michael Vogt (mvo)
status: New → Triaged
importance: Undecided → Medium
affects: xorg (Ubuntu Precise) → xserver-xorg-video-nouveau (Ubuntu Precise)
Changed in xserver-xorg-video-nouveau (Ubuntu Precise):
assignee: nobody → Martin Pitt (pitti)
Changed in xserver-xorg-video-vesa (Ubuntu Precise):
status: New → Triaged
importance: Undecided → High
assignee: nobody → Martin Pitt (pitti)
Revision history for this message
Martin Pitt (pitti) wrote :

Much easier solution: Promote the Breaks: for the old video ABIs to Conflicts:. That will convince apt to actually remove the old drivers instead of holding back the whole stack, and it will also do the right thing in both the main/universe and main-only cases.

-vesa will provide a fallback on machines which actually do use -s3 etc.

infinity | I'd have to re-read the Breaks code, and/or the policy description, but I suspect that Breaks on virtual packages (as opposed to versioned Breaks on real packages) will never really do what you were hoping.
infinity | Cause we'll want to deconfigure the virtual provider, hoping for an upgrade to come along and fix it, and no upgrade will happen.

no longer affects: xserver-xorg-video-vesa (Ubuntu Precise)
no longer affects: xserver-xorg-video-vesa (Ubuntu)
affects: xserver-xorg-video-nouveau (Ubuntu Precise) → xorg-server (Ubuntu Precise)
Martin Pitt (pitti)
no longer affects: update-manager (Ubuntu Precise)
no longer affects: update-manager (Ubuntu)
Martin Pitt (pitti)
tags: added: rls-p-tracking
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package xorg-server - 2:1.10.4-1ubuntu6

---------------
xorg-server (2:1.10.4-1ubuntu6) precise; urgency=low

  * control: Move input & video virtual package Breaks as Conflicts,
    because some of the old drivers were demoted to universe which might
    not be available on upgrade. Add Conflicts on -nv and -v4l as well,
    since they are gone from the archive. (LP: #902077)
 -- Timo Aaltonen <email address hidden> Fri, 09 Dec 2011 12:46:55 +0200

Changed in xorg-server (Ubuntu Precise):
status: Triaged → Fix Released
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