Ubuntu
unity8 package

/usr/bin/unity8-dash:7:QQuickItem::y:ListViewWithPageHeader::ListItem::y:ListViewWithPageHeader::onModelUpdated:ListViewWithPageHeader::qt_static_metacall:QMetaObject::activate

Bug #1433056 reported by errors.ubuntu.com bug bridge
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
unity8 (Ubuntu)
Fix Released
High
Albert Astals Cid

Bug Description

The Ubuntu Error Tracker has been receiving reports about a problem regarding unity8. This problem was most recently seen with version 8.02+15.04.20150123.3-0ubuntu1, the problem page at https://errors.ubuntu.com/problem/21e830048762b5352b790f57d783f45cc5b8f7bb contains more details.

Related branches

lp://staging/~aacid/unity8/lvwph_firstVisibleIndex_remove
PS Jenkins bot (community): Needs Fixing (continuous-integration)
Michael Zanetti (community): Approve
Diff: 47 lines (+18/-8)
2 files modified
plugins/Dash/listviewwithpageheader.cpp (+7/-8)
tests/plugins/Dash/listviewwithpageheadertest.cpp (+11/-0)
lp://staging/ubuntu/vivid-proposed/unity8
Michał Sawicz (saviq)
Changed in unity8 (Ubuntu):
status: New → Triaged
importance: Undecided → High
assignee: nobody → Albert Astals Cid (aacid)
Albert Astals Cid (aacid)
Changed in unity8 (Ubuntu):
status: Triaged → In Progress
Revision history for this message
Albert Astals Cid (aacid) wrote :

I can't prove that the attached branch really fixes the backtrace of this bug but this crash is caused because on line

const bool firstItemWithViewOnTop = insert.index == 0 && m_firstVisibleIndex == 0 && m_visibleItems.first()->y() + m_clipItem->y() > contentY();

insert.index is 0 and m_firstVisibleIndex is 0 but m_visibleItems.first()->y() crashes (i.e. it's probably empty) and this fixes a case in which m_firstVisibleIndex may get out of sync so I'd say let's merge this fix and let's monitor errors.ubuntu.com to see if it continues or it is indeed fixed by this.

Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package unity8 - 8.02+15.04.20150320-0ubuntu1

---------------
unity8 (8.02+15.04.20150320-0ubuntu1) vivid; urgency=medium

  [ Albert Astals Cid ]
  * Fix regression making pan not possible in Zoomable Image (LP:
    #1433506)
  * Make sure m_firstVisibleIndex is correctly set after processing
    changeSet.removes (LP: #1433056)
  * make pot_file

  [ Daniel d'Andrada ]
  * Don't show the rotating rect in "make tryFoo".

  [ Michael Zanetti ]
  * make pinlockscreen adjust better to larger displays
 -- CI Train Bot <email address hidden> Fri, 20 Mar 2015 11:56:41 +0000

Changed in unity8 (Ubuntu):
status: In Progress → Fix Released
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