Unsolved my app blinking on ubuntu
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yes but not always, sometimes even on a simple app with some listview or gridview that each one have many items
There is also a possibility that this is a problem with my code, but the suspicious thing that exists is that, the behaviour only is on ubuntu 16.04 (i tested on unity desktop and xfce and cinnamon and gnome3)
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Well, if even the distribution provided Qt exhibits that behaviour, then there might be something in your installation. What graphics card are you using ?
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yes you'r right it may be a problem with the graphics driver..
all of computers that i installed ubuntu and tested my app (even new build on that) had old nvidia (2 old card with nouveau) and intel graphics (i3 4th gen , i3 5th gen, i5 5th gen,i7 1th gen ) ...
and all of other distros i tested had amd cards and new intel graphics ..last night i installed my app on an ubuntu16.04 virtual machin (virtualbox and kvm) , I didn't see any blinks.
If there is a problem with the graphics card or the graphics driver , What is the best solution to the problem?
all users using this app dont have the ability to install new drivers or buy another cards. -
On how many machines di you saw that behaviour ?
What kernel were they running ?
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@mmjvox
If it's nvidia case -maybe try switching between non-threaded and threaded render loop. I had similar problem on my app and it helped me a lot . I had to set QSG_RENDER_LOOP enviroment variable to "basic" to get rid of blinking effect.
You can do this simply by adding this line to your main.cpp code before calling app.exec() :
qputenv("QSG_RENDER_LOOP","basic");
or when it not helps try: qputenv("QSG_RENDER_LOOP","threaded");It's just my idea - setting enviroment variables for QSG helped me when developing apps on computers with different graphic cards.
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@SGaist
on 7 or 8 machins
ubuntu default kernel (4.4 , 4.10, 4.11, 4.15) -
@kkuzawska
thanks
i will test it today -
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It didn't solve :D
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finaly
I found out that the problem was with Intel drivers and update the kernel solved the problem.