4 Replies
      Latest reply on May 18, 2020 2:26 AM by tszpan
      patniemeyer Level 1 Level 1 (0 points)

        When I attempt to launch an app from Xcode 11 (gm seed 2) to my attached iPhone running iOS 13 the I see the app launch with a white screen but then the iOS process hangs for about *60 seconds* before the app finishes launching.  If I un-check "debug executable" on the target then this behavior does not happen.  If I launch the app on the phone directly (without xcode) it launches normally.  If I launch the app on the phone and attempt to attach the debugger from xcode I get the same (one minute) hang.


        This only happens on one of my machines even though both are using the same setup (only diff is that one is a laptop and one is a desktop).  So I am assuming something is wrong or corrupted with the "debug support" that was installed on first connect to the new xcode...  But I can find no reference to how to re-init that.  I have tried the "unpair phone" option in devices in xcode but it does nothing.  I don't see anything in settings related to developer profiles or debug symbols.


        Anything I can do to reset the phone with respect to debgging support / symbols installed by xcode?  Any other thoughts?




        • Re: Xcode 11 hangs while attaching debugger to ios process
          patniemeyer Level 1 Level 1 (0 points)

          UPDATE: This is happening on that machine even when targeting a new phone and with a fresh install of XCode 11!  It must be something hosed in the environment...  What outside of xcode could be involved with this?  Bear in mind that it's not broken - just takes *60 seconds* to attach the debugger.

            • Re: Xcode 11 hangs while attaching debugger to ios process
              muva90 Level 1 Level 1 (0 points)

              I'm facing the same issue now. Did you resolve the issue patniemeyer?


              This happens:

              • only on my iMac and iPhone 11pro combination, it doesn’t happen if I build on another macbook or if I try it with another phone
              • for any app, even the newly create sample app
              • only if “Debug executable” is turned on in edit scheme, and if I just run the app from the homescreen it’s fine

              What I tried already:

              • deleting derived data ofc
              • restarting the phone
              • restarting iMac
              • reinstalling Xcode
              • clearing trusted computers from the phone
            • Re: Xcode 11 hangs while attaching debugger to ios process
              chakiralu Level 1 Level 1 (0 points)

              Hi! I was suffering from the same problem.

              My development environment is as follows.

              Xcode 11.3.1, iPhone 7 iOS 13.3.1, MacBook Pro (2016) macOS Catalina version 10.15.3

              I was able to solve it in the following way.

              1. Quit Xcode.

              2. Open the Mac desktop application Terminal.app.

              3. Execute command "rm -rf ~/Library/Developer/Xcode".

              4. Open Xcode.

              5. Select the Xcode menu "Product - Scheme - Edit Scheme".

              6. Check the "debug executable" in "Run - Info"

              7. Then I was able to debug.


              • Re: Xcode 11 hangs while attaching debugger to ios process
                tszpan Level 1 Level 1 (0 points)

                I encountered the same problem today.


                Xcode 11.4.1, Mac mini 2018, macOS Catalina 10.15.3,

                tested with two iPhone 6(both are iOS 12.4.6), they have this problem too(but not in every launch),

                also tested with an iPhone 8+, which doesn't have this problem at all


                I deleted folders inside ~/Library/Developer/Xcode/iOS DeviceSupport/ (folder's name started with 12.4.6), then run Xcode and launch an app again, problem solved.


                What a weird bug...