Viewer unresponsive when in High Contrast

Pablotacho · 03-05-2021, 11:40 AM

Hello forum,

I have Calibre 5.12 installed in both my Windows 10 PC and laptop. I like using the High Contrast theme from Windows (Settings, Easy of Use) and it works fine in both devices. The problem is with the Calibre Viewer under this setting. The viewer will pop up immediately, then stay blank for a long time and finally respond but excruciatingly slowly. When not in High Contrast, the viewer works perfectly fine.

Now, the thing is that it happens only with my PC and not with my laptop. Both are HP, x64, Windows Home. And both are configurated equally.

Also in both cases, I have the Calibre interface style: System. I've tried to change it to: Calibre, but the problem persist, only in my PC, as long as Windows in in High Contrast.

Any ideas? Thank you in advance!

theducks · 03-05-2021, 02:59 PM

Video driver or GPU (the video section) differences

Pablotacho · 03-08-2021, 08:00 PM

Quote:

Originally Posted by theducks

Video driver or GPU (the video section) differences

Thank you fort your brief but informative post. The card of the affected computer is an Intel 4600. I made sure to have the latest driver, but still no chance. Is anything else I can try to do or am I stuck as long as I have this card?

kovidgoyal · 03-08-2021, 10:05 PM

You can also try turning off hardware acceleration as described here: https://doc.qt.io/qt-5/qtwebengine-debugging.html

Pablotacho · 03-09-2021, 04:00 AM

Quote:

Originally Posted by kovidgoyal

You can also try turning off hardware acceleration as described here: https://doc.qt.io/qt-5/qtwebengine-debugging.html

Thank you Kovid, I will give it a try!

03-05-2021, 11:40 AM	#1
Pablotacho Junior Member Posts: 3 Karma: 10 Join Date: Mar 2021 Device: Kindle Paperwhite	Viewer unresponsive when in High Contrast Hello forum, I have Calibre 5.12 installed in both my Windows 10 PC and laptop. I like using the High Contrast theme from Windows (Settings, Easy of Use) and it works fine in both devices. The problem is with the Calibre Viewer under this setting. The viewer will pop up immediately, then stay blank for a long time and finally respond but excruciatingly slowly. When not in High Contrast, the viewer works perfectly fine. Now, the thing is that it happens only with my PC and not with my laptop. Both are HP, x64, Windows Home. And both are configurated equally. Also in both cases, I have the Calibre interface style: System. I've tried to change it to: Calibre, but the problem persist, only in my PC, as long as Windows in in High Contrast. Any ideas? Thank you in advance!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
File preview in high contrast mode	bob.f	Editor	3	08-01-2019 09:40 PM
I have poor vision, need 10 inch high contrast reader	frankrec	Which one should I buy?	19	05-26-2019 12:20 AM
High contrast mode vs B/W e-ink	markbot	General Discussions	24	07-16-2016 03:55 PM
Is very high contrast really a good thing?	Ariadne	Which one should I buy?	8	11-16-2009 07:14 AM
high Contrast reader	Manilaborn	Which one should I buy?	9	05-18-2007 10:25 AM

03-05-2021, 02:59 PM	#2
theducks Well trained by Cats Posts: 31,047 Karma: 60358908 Join Date: Aug 2009 Location: The Central Coast of California Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A	Video driver or GPU (the video section) differences

03-08-2021, 10:05 PM	#4
kovidgoyal creator of calibre Posts: 45,344 Karma: 27182818 Join Date: Oct 2006 Location: Mumbai, India Device: Various	You can also try turning off hardware acceleration as described here: https://doc.qt.io/qt-5/qtwebengine-debugging.html

Advert

Advert