There is nothing general in the docs, that would say: This is faster, because…. Qt 6 follows a general trend: Use more caching for the sake of speed. There were some optimisations in container classes and string views. We fixed a mem leak in the Quick pixmap cache. The downside of more caching, in other words higher memory consumption, is that older memory constrained setups (mainly embedded) need to swap out and actually become slower. But I guess that’s not a Qt specific phenomenon. All frameworks and other tools I use on a daily basis, have increased their appetite for memory as RAM becomes cheaper and larger.

@Anthony-Abboud for the crackling sound issue, I could fix my issues with https://codereview.qt-project.org/c/qt/qtmultimedia/+/503818 and this is such a generic error that I expect that you hit the same problem. For the missing sound output, the following changed helped me https://codereview.qt-project.org/c/qt/qtmultimedia/+/503819 . Yet for that I am not sure yet if it is a proper solution or just a workaround.

@rtvideo said in Cross Compile qt to IMX6: I am trying to run a Qt program made in a Linux 64 bit Ubuntu desktop (18.04) on a IMX6 SabreLite that has Ubuntu 18.04 installed as well Have you set up a cross-compile environment? Is there instructions or even an SDK for such device in order to cross-compile Qt apps for it? I'm not expert on IMX6-based devices, so not sure if you have same device or not, but have you checked this Qt guide regarding IMX6 support? I know that there is a package called "libimxvpuapi" that if I could get into my .pro file and compile it, it may work on my imx6 by running the binary file. Again, not expert on those IMX6 devices, but from this official Freescale page, the libimxvpuapi library provides an API for using hardware video codecs on i.MX platforms so it doesn't look like it will help you run your Qt app built for a Linux 64 bit Ubuntu desktop (18.04) work on my imx6 by running the binary file.

@rtvideo said in Bash: ./filename: cannot execute binary file: Exec fortmat error: Is there anyway to get around this and be able to run the binary on the IMX6? You have to compile it for this architecture. Search for 'cross compile'.

Are you using which Yocto branch? Could you tell the MACHINE and the bblayers you're using?

Hmm good catch! Although it turns out that I can't flick the list, because the items require some custom mouse move handling ... which reduces it to a non-interactive PathView. So, solved I guess! Thanks for pointing out the Tumbler though, and I hope my examples prove to be useful to others.

I'll try out soon Samsung S8 plus Samsung DeX Samsung DeX is connected to a HD Monitor via HDMI and apps running on S8 are automatically running on this external monitor as soon as S8 is placed into the DeX dock. will my QtQuickControls2 APP run under this environment ? will the change of DPI and size work ? I'll let you know ...

I already wrote it: use out of source builds.

Thank you so much for your recommendation! I will follow up with them.

@VincentB said: Sorry but I'm not sure to find where to find this stack window .. (I'm using qtcreator 3.6.0) see this.

@JSmith said in Video frame rate on iMX6: smoothly @JSmith did you get it to work with better fps >30 fps on iMx6Q with Qt5?

Hi, for me the keyboard worked but the mouse didnt. export QT_QPA_EGLFS_NO_LIBINPUT=1 export QT_QPA_EVDEV_MOUSE_PARAMETERS=grab=1 export QT_QPA_EVDEV_KEYBOARD_PARAMETERS=grab=1 ./myApp --platform eglfs -plugin evdevmouse:/dev/input/event2 Here is how i start x11vnc: x11vnc -noipv6 -rawfb /dev/fb0 -geometry 1920x1080 -pipeinput UINPUT:direct_abs=/dev/uinput -dk -dp I found something here: https://embeddeduse.com/2016/04/01/remote-support-vnc-harvester-terminal/ Maybe that is the only way?

Hi and welcome to devnet, For question regarding Qt lower levels, I'd recommend posting on the interest mailing list. You'll find there Qt's developers/maintainers (this forum is more user oriented)