Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. White screen issue on Qt application in MAC os
Forum Update on Monday, May 27th 2025

White screen issue on Qt application in MAC os

Scheduled Pinned Locked Moved Unsolved General and Desktop
macos11localhost
4 Posts 2 Posters 517 Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • S Offline
    S Offline
    supratik123
    wrote on last edited by SGaist
    #1

    Let me give you a background of my application. it is designed in qt c++ for Mac OS. Qt starts server at localhost 1234. My front end client connects to this server and file transfer takes place between both. This file transfer is basically tranfer of resources.
    Now somehow my front end client is getting killed and regenerated with new pid. On looking at system.log in MAC OS I see that the process is getting killed by SIGKILL sent by launchhd. I am unable to debug why this front end client is suddenly getting killed and getting regenerated with a new pid. The application turns white i.e front end turns white and I am unable to proceed in application.
    Help me to maybe give some idea to handle this situation.

    SGaistS 1 Reply Last reply
    0
    • S supratik123

      Let me give you a background of my application. it is designed in qt c++ for Mac OS. Qt starts server at localhost 1234. My front end client connects to this server and file transfer takes place between both. This file transfer is basically tranfer of resources.
      Now somehow my front end client is getting killed and regenerated with new pid. On looking at system.log in MAC OS I see that the process is getting killed by SIGKILL sent by launchhd. I am unable to debug why this front end client is suddenly getting killed and getting regenerated with a new pid. The application turns white i.e front end turns white and I am unable to proceed in application.
      Help me to maybe give some idea to handle this situation.

      SGaistS Offline
      SGaistS Offline
      SGaist
      Lifetime Qt Champion
      wrote on last edited by
      #2

      Hi,

      Did you check what happens with a debugger ?

      Interested in AI ? www.idiap.ch
      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

      S 1 Reply Last reply
      0
      • SGaistS SGaist

        Hi,

        Did you check what happens with a debugger ?

        S Offline
        S Offline
        supratik123
        wrote on last edited by
        #3

        @SGaist Sorry for the delay in response. I attached LLDB in MACos to my application and i figured out the issue

        SGaistS 1 Reply Last reply
        0
        • S supratik123

          @SGaist Sorry for the delay in response. I attached LLDB in MACos to my application and i figured out the issue

          SGaistS Offline
          SGaistS Offline
          SGaist
          Lifetime Qt Champion
          wrote on last edited by
          #4

          What was the issue ?

          Interested in AI ? www.idiap.ch
          Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

          1 Reply Last reply
          0

          • Login

          • Login or register to search.
          • First post
            Last post
          0
          • Categories
          • Recent
          • Tags
          • Popular
          • Users
          • Groups
          • Search
          • Get Qt Extensions
          • Unsolved