Details
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Bug
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Resolution: Unresolved
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P2: Important
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None
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6.5
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None
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Linux/Yocto
Description
Running Qt in a imx8 board with dual display and mirroring enabled, leads to application freezing. Only the first frame of application is successfully drawn to both displays. Same with both QML and widget applications.
Using QT_QPA_EGLFS_KMS_CONFIG file:
{
"hwcursor": false,
"device": "/dev/dri/card0",
"outputs": [
{
"name": "HDMI1",
"mode": "1280x800"
},
{
"name": "HDMI2",
"mode": "1280x800",
"clones": "HDMI1"
}
]
}
Last logs from qt.scenegraph.renderloop
qt.scenegraph.renderloop: polishAndSync (in expose) StartupScreen_QMLTYPE_23(0xaaab0ed6cfe0 active exposed, visibility=QWindow::Windowed, flags=QFlags<Qt::WindowType>(Window), geometry=0,0 1280x800) qt.scenegraph.renderloop: - lock for sync qt.scenegraph.renderloop: - wait for sync qt.scenegraph.renderloop: (RT) WM_RequestSync qt.scenegraph.renderloop: (RT) - triggered from expose qt.scenegraph.renderloop: (RT) --- done processEventsAndWaitForMore() qt.scenegraph.renderloop: (RT) syncAndRender() qt.scenegraph.renderloop: (RT) - updatePending, doing sync qt.scenegraph.renderloop: (RT) sync() qt.scenegraph.renderloop: (RT) - rendering started
GPU drivers version:
kernel-module-imx-gpu-viv - 6.4.3.p4.4-r0
The same setup works on a Raspberrypi Pi 4.