Details
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Bug
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Resolution: Done
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P2: Important
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None
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5.7.0, 5.8.0 RC
Description
This is reproducible with Qt5(Qt5.7.0, Qt Quick Controls 2 Application) on Linux.
How to reproduce:
1. Create new project (Qt Quick Controls 2 Application)
2. Build project.
3. Set the resolution to 800x600 on your monitor.
4. Start the application.
What happens:
1. No window appears.
2. Output:
output in terminal:
QML debugging is enabled. Only use this in a safe environment.
QXcbConnection: XCB error: 2 (BadValue), sequence: 460, resource id: 0, major code: 1 (CreateWindow), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 461, resource id: 31457289, major code: 2 (ChangeWindowAttributes), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 462, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 463, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 464, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 466, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 467, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 468, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 472, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 476, resource id: 31457289, major code: 2 (ChangeWindowAttributes), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 477, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 480, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 481, resource id: 31457289, major code: 20 (GetProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 485, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 486, resource id: 31457289, major code: 19 (DeleteProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 487, resource id: 31457289, major code: 20 (GetProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 488, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 489, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 490, resource id: 31457289, major code: 20 (GetProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 491, resource id: 31457289, major code: 18 (ChangeProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 492, resource id: 31457289, major code: 20 (GetProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 493, resource id: 31457289, major code: 19 (DeleteProperty), minor code: 0
QXcbConnection: XCB error: 3 (BadWindow), sequence: 494, resource id: 31457289, major code: 8 (MapWindow), minor code: 0
The program has unexpectedly finished.
This issue not reproduced if I delete next line of code:
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);