Bug 205189

Summary:	dolphin freezes on large video preview
Product:	[Applications] dolphin	Reporter:	Ismael Barros <razielmine>
Component:	general	Assignee:	Peter Penz <peter.penz19>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	andresbajotierra
Priority:	NOR
Version First Reported In:	16.12.2
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Ismael Barros 2009-08-26 13:14:46 UTC

Version:           1.3 (using 4.3.00 (KDE 4.3.0), Chakra KDE)
Compiler:          gcc
OS:                Linux (i686) release 2.6.30-ARCH

When browsing an external USB2 drive, if I place my mouse over a large video (say, 700MB), dolphin freezes for around 10 to 30 seconds. Sometimes, the whole desktop seems to be frozen, as I can't even switch windows or open a menu (but if I try to, all those mouse and keyboard events get executed in batch after the freeze ends). Other times only dolphin window is frozen.

It seems to be trying to preview the video. My "maximum file size" right now is 3MB, and in the "show previews for" panel I only have checked "Directories", "Images" and "Jpeg" (which by the way doesn't make much sense).

Right after the freeze ends, the tooltip with information about the file (name, type, size, etc) shows up, but without thumbnail.

After further testing, the problem seems to be specially bad with .mp4 and .mov files. .avi, .mpeg and .wmv files seem to work fine.

Comment 1 Dario Andres 2009-08-26 17:01:33 UTC

- Can you try disabling the Tooltips in Dolphin Settings/ General ?
- Are you using the Mplayerthumbs plugin ?
This is likely to be bug 195462. Thanks

Comment 2 Ismael Barros 2009-08-30 03:37:10 UTC

I'm not using Mplayerthumbs, and disabling tooltips indeed fixes the problem, as dolphin has nothing to read on disk on mouseover.

Regarding bug 195462, when the tooltip of a mp4/mov file is loading, dolphin indeed starts eating huge amounts of RAM, it seems to be loading the whole file into RAM. However, as soon as the tooltip is loaded, that RAM is freed, and I don't have to kill dolphin at all. I haven't experienced crashes or system slowdowns either, probably because I have RAM enough to avoid swapping.

I just checked and I seem to have the same problem with big PDF files, so it looks like it's the same bug in strigi.

*** This bug has been marked as a duplicate of bug 195462 ***