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  1. Qt
  2. QTBUG-45071

Crash when resizing windows to more than 3840x2160

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P1: Critical
    • Resolution: Done
    • Affects Version/s: 5.4.0
    • Fix Version/s: 5.4.2
    • Component/s: QPA: X11/XCB
    • Labels:
      None
    • Environment:
      Ubuntu 14.04
    • Commits:
      f64b87a5df8870be138dbf3febad950e1fc4ed8c

      Description

      Easiest to reproduce with a dual monitor Xinerama setup with one 4K monitor: Using any widget-based application, try to resize the window to cover both screens.

      It crashes after a warning of the type "QXcbShmImage: shmget() failed (22) for size 35101960 (4159x2110)".

      The problem is that we are trying to allocate a backingstore that is bigger than the maximum shared memory size on Linux.

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            • Assignee:
              tvete Paul Olav Tvete
              Reporter:
              tvete Paul Olav Tvete
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              Dates

              • Created:
                Updated:
                Resolved:

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