Need help with 5.34/Win10 not starting when using docking station

fsmontenegro · 01-03-2022, 03:31 PM

Hello all,

Apologies if this is not the right forum, it's my first time posting here. I'd love some input!

I'm looking for suggestions on troubleshooting why 5.34 won't properly start when my laptop (Acer Switch 5 running Win10 64bit) is connected to its USB-C docking station (Plugable UD-ULTCDL) but will work fine when it is not connected.

By not starting I mean it will start the executable then fail quietly.

When running calibre-debug -g I get the following output:

Code:

calibre 5.34 [64bit]  embedded-python: True is64bit: True
Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19041')
Python 3.8.5
Windows: ('10', '10.0.19041', '', 'Multiprocessor Free')
Interface language: None
Turning on automatic hidpi scaling

Miscellaneous steps/observations I've done:

I did not see any entries in Windows' Application, System, or Security logs related to this error.
I've updated Windows itself and all the drivers I could find for the docking station (it uses DisplayLink drivers, currently running 10.1 from Sep 2021) as well as other drivers on the system.
I've tried the scaling feature on Calibre auto, on & off, with same result. (only difference is message saying "turning off hidpi" when I have it set to off.
All displays (laptop native and external monitors) are set for 100% scaling.
Removing and reinstalling Calibre did not appear to make any changes.
Looking at process startup via ProcMon64 yields over 3,000 entries but nothing jumped at me in terms of errors.

I suspect it might be related to the Qt subsystem, but I don't know how to troubleshoot it.

Any suggestions on how to proceed?

Many thanks in advance!

Fernando

fsmontenegro · 01-03-2022, 05:01 PM

And just like that it appears there was one more driver update to do, and things worked! So, this is no longer a "help me get 5.34 working!" but a much less urgent "so, how would I troubleshoot if something was wrong with Qt x video drivers in an end user system?"

Thanks!

kovidgoyal · 01-03-2022, 09:42 PM

https://doc.qt.io/qt-5/qtwebengine-debugging.html

01-03-2022, 03:31 PM	#1
fsmontenegro Junior Member Posts: 2 Karma: 10 Join Date: Jul 2021 Location: Canada Device: Remarkable2	Need help with 5.34/Win10 not starting when using docking station Hello all, Apologies if this is not the right forum, it's my first time posting here. I'd love some input! I'm looking for suggestions on troubleshooting why 5.34 won't properly start when my laptop (Acer Switch 5 running Win10 64bit) is connected to its USB-C docking station (Plugable UD-ULTCDL) but will work fine when it is not connected. By not starting I mean it will start the executable then fail quietly. When running calibre-debug -g I get the following output: Code: calibre 5.34 [64bit] embedded-python: True is64bit: True Windows-10-10.0.19041 Windows ('64bit', 'WindowsPE') ('Windows', '10', '10.0.19041') Python 3.8.5 Windows: ('10', '10.0.19041', '', 'Multiprocessor Free') Interface language: None Turning on automatic hidpi scaling Miscellaneous steps/observations I've done: I did not see any entries in Windows' Application, System, or Security logs related to this error. I've updated Windows itself and all the drivers I could find for the docking station (it uses DisplayLink drivers, currently running 10.1 from Sep 2021) as well as other drivers on the system. I've tried the scaling feature on Calibre auto, on & off, with same result. (only difference is message saying "turning off hidpi" when I have it set to off. All displays (laptop native and external monitors) are set for 100% scaling. Removing and reinstalling Calibre did not appear to make any changes. Looking at process startup via ProcMon64 yields over 3,000 entries but nothing jumped at me in terms of errors. I suspect it might be related to the Qt subsystem, but I don't know how to troubleshoot it. Any suggestions on how to proceed? Many thanks in advance! Fernando

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Docking issue	dicknskip	Editor	2	03-16-2019 11:05 AM
Docking Clip window	deeplyblue	Sigil	3	10-23-2018 10:35 PM
Panel docking revisited...	exaltedwombat	Sigil	2	03-11-2013 06:55 PM
Color Docking station	booklover6	Nook Color & Nook Tablet	9	02-25-2012 08:23 PM
iLiad Docking station	mac	iRex Developer's Corner	2	10-31-2007 12:09 PM

01-03-2022, 05:01 PM	#2
fsmontenegro Junior Member Posts: 2 Karma: 10 Join Date: Jul 2021 Location: Canada Device: Remarkable2	And just like that it appears there was one more driver update to do, and things worked! So, this is no longer a "help me get 5.34 working!" but a much less urgent "so, how would I troubleshoot if something was wrong with Qt x video drivers in an end user system?" Thanks!

01-03-2022, 09:42 PM	#3
kovidgoyal creator of calibre Posts: 45,356 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	https://doc.qt.io/qt-5/qtwebengine-debugging.html

Advert