0002448: Doomseeker crashes and just produces blank white screen on recent update on beta channel

Notes
(0013457) DrinkyBird (reporter) 2015-09-09 15:50	Does not happen for me.

(0013458) Hypnotoad (reporter) 2015-09-09 15:53	What version of windows do you use?

(0013459) DrinkyBird (reporter) 2015-09-09 16:53 edited on: 2015-09-09 16:53	Windows 7 Home Premium SP1 x64.

(0013460) Zalewa (developer) 2015-09-09 19:31	Just checked by updating Doomseeker 1.0 to the newest beta and the problem doesn't happen for me either. What Windows version do you use, Hyponotoad?

(0013461) Hypnotoad (reporter) 2015-09-09 21:53	Windows 7 Ultimate SP1 x64

(0013477) Zalewa (developer) 2015-09-10 18:39 edited on: 2015-09-10 18:39	First of all, does it still happen if you run this version from this package? 'http://devbuilds.drdteam.org/doomseeker/doomseeker%201.1~beta-150903-2017.zip [^]' As I cannot reproduce this myself, would be possible for you to follow compilation instructions here, build Doomseeker for yourself in Debug mode and tell me where the compiler stack trace points to when the program crashes? If that's too much of a bother then maybe I can try producing some builds with debug logs output so that we can narrow down the area where the program crashes.

(0013486) Hypnotoad (reporter) 2015-09-11 19:08	That latest zip still does not work. I'll try compiling myself when I have more time spare. Some build with debugging logs might help in the meantime.

(0013490) Zalewa (developer) 2015-09-12 07:30 edited on: 2015-09-12 07:30	I've uploaded a bunch of builds for you to try out: 1.'http://devbuilds.drdteam.org/doomseeker/doomseeker%201.1~beta-150805-2049.zip [^]' 2.'http://devbuilds.drdteam.org/doomseeker/doomseeker%201.1~beta-150808-1008.zip [^]' 3.'http://devbuilds.drdteam.org/doomseeker/doomseeker%201.1~beta-150809-0852.zip [^]' 4.'http://devbuilds.drdteam.org/doomseeker/doomseeker%201.1~beta-150815-0907.zip [^]' Could you try them out and tell me which crash and which don't?

(0013492) Hypnotoad (reporter) 2015-09-12 12:34	All of those builds crash.

(0013493) Zalewa (developer) 2015-09-12 14:00	Together with Hypnotoad we've figured out that a stale doomseeker.ini.lock file created by QSettings does this. Some references: 1.'http://doc.qt.io/qt-5/qsettings.html#accessing-settings-from-multiple-threads-or-processes-simultaneously [^]' 2.'https://bugreports.qt.io/browse/QTBUG-21739 [^]' - look for QLockFile in comments. 3.'https://bugreports.qt.io/browse/QTBUG-44771 [^]' I'll try to figure out a workaround for that.

(0013505) Zalewa (developer) 2015-09-13 15:09 edited on: 2015-09-13 15:09	Okay, I've deployed an update on beta channel. The fix was to update Qt redistributed with Doomseeker from 5.4.1 to 5.5. Now, from what I see this isn't a full fix. When a stray .lock file is present, Doomseeker will freeze for a moment (about 10 - 15 seconds), then it will unfreeze, delete the .lock file and continue as normal. This is an improvement over 5.4.1 where Doomseeker would never unfreeze. To verify do this: 1. Go to folder where configuration is stored: (%APPDATA%/.doomseeker, or <exedir>/.doomseeker for portable mode). 2. For each .ini file create appropriate .ini.lock file. These .lock files should be empty. 3. Run Doomseeker.

(0016093) Zalewa (developer) 2016-10-24 19:29	I think that after a year without further complaints this ticket can be closed.

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Issue History
Date Modified	Username	Field	Change
2015-09-09 15:45	Hypnotoad	New Issue
2015-09-09 15:50	DrinkyBird	Note Added: 0013457
2015-09-09 15:53	Hypnotoad	Note Added: 0013458
2015-09-09 16:53	DrinkyBird	Note Added: 0013459
2015-09-09 16:53	DrinkyBird	Note Edited: 0013459	View Revisions
2015-09-09 19:31	Zalewa	Note Added: 0013460
2015-09-09 19:32	Zalewa	Assigned To	=> Zalewa
2015-09-09 19:32	Zalewa	Status	new => feedback
2015-09-09 21:53	Hypnotoad	Note Added: 0013461
2015-09-09 21:53	Hypnotoad	Status	feedback => assigned
2015-09-10 18:39	Zalewa	Note Added: 0013477
2015-09-10 18:39	Zalewa	Note Edited: 0013477	View Revisions
2015-09-11 19:08	Hypnotoad	Note Added: 0013486
2015-09-12 07:30	Zalewa	Note Added: 0013490
2015-09-12 07:30	Zalewa	Note Edited: 0013490	View Revisions
2015-09-12 07:30	Zalewa	Note Edited: 0013490	View Revisions
2015-09-12 12:34	Hypnotoad	Note Added: 0013492
2015-09-12 14:00	Zalewa	Note Added: 0013493
2015-09-13 15:09	Zalewa	Note Added: 0013505
2015-09-13 15:09	Zalewa	Status	assigned => needs testing
2015-09-13 15:09	Zalewa	Note Edited: 0013505	View Revisions
2016-10-24 19:29	Zalewa	Note Added: 0016093
2016-10-24 19:29	Zalewa	Status	needs testing => resolved
2016-10-24 19:29	Zalewa	Fixed in Version	=> 1.1
2016-10-24 19:29	Zalewa	Resolution	open => fixed
2018-09-29 14:25	WubTheCaptain	Status	resolved => closed
2018-09-29 14:36	WubTheCaptain	Target Version	=> 1.1

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