[digikam] [Bug 451221] New: Cannot start digicam

[Jan Steinman]

https://bugs.kde.org/show_bug.cgi?id=451221

            Bug ID: 451221
           Summary: Cannot start digicam
           Product: digikam
           Version: unspecified
          Platform: macOS (DMG)
                OS: macOS
            Status: REPORTED
          Severity: critical
          Priority: NOR
         Component: Database-Schema
          Assignee: digikam-bugs-null at kde.org
          Reporter: jan.steinman at gmail.com
  Target Milestone: ---

Created attachment 147338
  --> https://bugs.kde.org/attachment.cgi?id=147338&action=edit
Two dialogs left on the screen upon startup of digikam.

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug
symbols.
See
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1. Double-click digicam.app in the Finder.

OBSERVED RESULT
Database (mariadb on localhost) fails to update, according to message, and
hangs forever.

EXPECTED RESULT
digikam runs

SOFTWARE/OS VERSIONS
Windows: 
macOS: 10.15.7 (Catalina latest)
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
I have not used DigiKam for some time. I upgraded MariaDB from 10.4 to 10.6
(latest). When I attempt to run it, I get the following message: "Failed to
update the database schema from version 12 to version 13.
Please read the error messages printed on the console and report this error as
a bug at bugs.kde.org."

No error messages appear in the system console. Besides the error dialog,
digikam The last thing in MariaDB's error log is: "2022-03-06 19:35:39 135
[Warning] Aborted connection 135 to db: 'DigiKam-Core' user: 'DigiKam' host:
'localhost' (Got an error reading communication packets)"

My max_allowed_packet is set to 499,999,744, because I recently restored an
email database that was losing connection until I boosted max_allowed_packet.
Should I reduce that number? I have 56GB of RAM on an older MacPro 4,1.

Thank you!

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