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  1. Qt
  2. QTBUG-44213

QScreen availableGeometry is incorrect after unplugging then plugging in primary monitor on Windows 7

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Details

    • Bug
    • Resolution: Done
    • P3: Somewhat important
    • 5.5.0
    • 5.4.0
    • QPA: Windows
    • None
    • Windows 7 64bit, Qt 5.4
    • 52f5e50f11a3ba82e32dc2efc656e4021a3fa4f5 (qtbase/5.5, 25.2.2015)

    Description

      I have a 2 monitor setup, a laptop with a screen res of 1366x768 on the left, and a main external monitor with a res of 1680x1050 on the right.

      In windows, the right monitor is setup as my main display.

      On app start, QDesktopWidget::availableGeometry(-1) reports the correct size, if I then unplug the main monitor, availableGeometry(-1) correctly reports the correct size of the laptop screen.

      If I then plug the external monitor back into the laptop, availableGeometry(-1) provides incorrect values.

      Here is a chunk of log from the attached sample program which simple logs on signals from QDesktopWidget:

      << initial load (main window is external monitor)
Initial availableGeometry  QRect(0,0 1680x1010)

<< unplugging (main window is laptop)
screenCountChanged availableGeometry  QRect(-1366,382 1366x768)
resized availableGeometry  QRect(-1366,382 1366x768)
resized availableGeometry  QRect(0,0 1366x768)
workAreaResized availableGeometry  QRect(0,0 1366x768)
workAreaResized availableGeometry  QRect(0,0 1366x728)

<< plugging back in (main window is external monitor)
screenCountChanged availableGeometry  QRect(0,0 1366x728)
resized availableGeometry  QRect(-1366,382 1366x768)
workAreaResized availableGeometry  QRect(-1366,382 1366x768)
workAreaResized availableGeometry  QRect(-1366,382 1366x768)

      I would expect, after plugging the external monitor back in that availableGeometry(-1) returns QRect(0,0 1680x1010)

      I see the same (incorrect) behavior when physically removing the laptop from a dock and re-attaching it.

      Attachments

        1. layout].jpg
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        2. qtbug44213_log4.txt
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        3. qtbug44213_log5.txt
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        4. qtbug44213.zip
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        5. WindowsGeometry.zip
          4 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-42985 Qt GUI application disappear or crash when no screens are available

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-38404 XCB: QGuiApplication::primaryScreen doesn't change according to the primary screen

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-33048 QDesktopWidget::primaryScreen() is always 0 and QGuiApplication::screens() always returns the primary one as first

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-76162 When using separate dual displays (no Xinerama), menus will popup on display 0 even if the parent is on display 1

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          For Gerrit Dashboard: QTBUG-44213
          # Subject Branch Project Status CR V
          105285,5 Improve handling of screens in QWidgets. 5.4 qt/qtbase Status: MERGED +2 0
          105370,2 Streamline code in QDesktopWidget. 5.4 qt/qtbase Status: MERGED +2 0

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              Unassigned Unassigned
              neil Neil Williams
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                Updated:
                Resolved:

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