Multi Commander Support Forum

Multi Commander => Support and Feedback => Topic started by: Kwargs on June 13, 2018, 12:35:43

Title: Thumbnails are not shown after long Multicommander runtime
Post by: Kwargs on June 13, 2018, 12:35:43
I almost never do restart my PC or Multicommander and I heavily use thumbnails to preview pictures. My thumbnail settings are

Thumbnail system: Windows (created and cached by Windows) (Win7+)
Picture quality: Bad (Fast)
Crop the thumbnails dimensions to a square: No
Number of threads to use: Auto
Log thumbnail process to application log: no

After multiple hours (I would guess 10 or more), when I try to preview a picture, only the picture Icon is shown. So Multicommander simply does not show thumbnails anymore, although view mode is set to "Thumbnail list". Restarting Multicommander helps.
Title: Re: Thumbnails are not shown after long Multicommander runtime
Post by: Matthias515566 on June 14, 2018, 17:27:26
The sleepmode, standby, hibernation cause alot problems. Windows XP was a good OS, sometimes i have a dream i going back to Windows XP. Maybe i use in futire the 64 bit Version of Windows XP. It seems Windows 10 gets worse after every update.
Title: Re: Thumbnails are not shown after long Multicommander runtime
Post by: Kwargs on June 15, 2018, 08:31:35
True words, I was a fan of Windows 10 but Microsofts bug mess of an update policy is not worthy of an operating system. Do you think it is a Windows 10 issue that cannot be fixed within Multicommander while still keeping the Windows thumbnail system? That would be sad. It may seem like a small issue to most, but it annoys me each day. As a last resort, I may have to write an automatically executed task to restart Multicommander each night, however it would not feel right.
Title: Re: Thumbnails are not shown after long Multicommander runtime
Post by: Matthias515566 on June 15, 2018, 15:00:12
I guess the win 10 1803 need every day a restart. After a restart works the jumping between opened windows faster for example. I go not really back to Win XP, but in Windows XP was never a restart for fixing a issue needed, in Win 10 help a restart again for fixing some errors. It seems this is a step back. If you use much thumbnails, test xnview, this use his own thumbnail database, and loading all thumbnails of a folder and if you scroll, they are already loaded, and scrolling is smoother.
Title: Re: Thumbnails are not shown after long Multicommander runtime
Post by: Mathias (Author) on June 17, 2018, 17:02:19
If I'm going to bring it back ontopic. :)

I often do not run with thumbnails unless I work with images. So I have not seen an issue with that in MC. And it is a bit hard to reproduce.
What view mode is you running Thumbnail List or Details ?
Is in any kind if images that are now shown . (like only jpg fail and png works ?) or all image..
What are you doing, Like what kind of files do you have. and any other infromation you can give me on how to setup something to try to reproduce it.

If you enable the logging for thumbnails. And it happens again you might get information in the log if MC get an error from Windows and such.
If it is a caching issue with MC you can in the command line bar type ":ctc"  (clear thumbnail cache) and then do a force refresh.. (F2/F5 depending on key setup)
If that works, then the issue in within the MC caching.
Title: Re: Thumbnails are not shown after long Multicommander runtime
Post by: Kwargs on June 26, 2018, 17:12:16
TL;DR of the writeup below: windows disk cleanup -> thumbnails and afterwards F5 in MC and the thumbnails are back. Thus, it is a Windows 10 bug.

What view mode is you running Thumbnail List or Details ?
I am using Thumbnail List.
Is in any kind if images that are now shown . (like only jpg fail and png works ?) or all image..

I tested png and jpg.

What are you doing, Like what kind of files do you have. and any other infromation you can give me on how to setup something to try to reproduce it.
I just try to name anything that comes to my mind but not necessarily needs to be important:


If you enable the logging for thumbnails. And it happens again you might get information in the log if MC get an error from Windows and such.
I just did that, let's see.

If it is a caching issue with MC you can in the command line bar type ":ctc"  (clear thumbnail cache) and then do a force refresh.. (F2/F5 depending on key setup)
If that works, then the issue in within the MC caching.
I tried it and it did not help, however you gave me an idea: I used windows disk cleanup to clear the thumbnails. Then pressing F5 gave me back the thumbnails without restarting MC.