I am a new guy in using QT, I do not know why it is very slow, and always crash with no reason.

[A Former User]

What graphics card and driver do you use?

[dennile]

@mrjj I install using the offline, not online. Yeah, So many people use should not have the problem, but I really do not know why. So maybe my project is too big? I need to load some of lib, for example boost, and some other libs. Especially when I need it to auto-complement some variables, the fan runs with noise, and sometimes it will stuck when I select a variables, and also with a loud noise of fan. So it is a common thing for you? I use a navida k1000 ,dell 4700 work station.

[mrjj]

@dennile said:

dell 4700

Not the orginal dell 4700 with Intel Pentium 4 ?
http://www.engadget.com/products/dell/dimension/4700/specs/

[dennile]

@Wieland I use a NAVIDA k1000 ,dell M4700 MOBILE work station. I download a gui management of nivida, so I think it should not be the problem.

[mrjj]

@dennile
oh, its a Core i7 CPU ?
Should have plenty of power. even for BOOST.

[dennile]

@mrjj yes, it is the high configuration at that time. Let me change to another computer to check whether it is the problem of computer, and then give feedback to you guys. Anyway, thank you firstly!

[dennile]

hi, all guys, I think the problem should be the system linuxmint, which is a variables of linux. When I change to a common apple computer, it is very fast. I do not know what is the mechanism the linuxmint affects, maybe the QT, maybe the performance of my computer, so I am just sure it is not the problem of QT. Thanks, everyone!

[mrjj]

ok.
Just as a note. I run linux mint at work.
I switched to it after they made ubuntu use unity
and not have had any issue with Qt on mint.

[A Former User]

@dennile @mrjj I blame the graphics driver. It's always the graphics driver.

[dennile]

@mrjj Your answer makes me confused again, if that, so what is the problem? Whether some of configuration I do not do rightly? or, it is the problem of my computer? So how to make sure the driver is correctly configured? How to evaluate the performance of computer?

[dennile]

@Wieland how to make sure I install a correct graphics driver?
by the way, my graphic card is Quadro K1000M,

[A Former User]

@dennile Sorry, I can't help you with your Linux distro, that's not my field of expertise. But I must say that the graphics driver (be it the proprietary Nvidia or Nouveau or drivers for Intel GPU) are the only source of real trouble I had with Linux in the last maybe 7 years or so.