Bug 480953

Summary:	Preview images camera-raw over smb not shown
Product:	[Applications] dolphin	Reporter:	andy
Component:	view-engine: icons mode	Assignee:	Dolphin Bug Assignee <dolphin-bugs-null>
Status:	REPORTED ---
Severity:	normal	CC:	dolphin-bugs-null
Priority:	NOR
Version First Reported In:	21.12.3
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description andy 2024-02-06 13:58:51 UTC

Fresh install, Ubuntu 22.03, Kubuntu-Desktop. Over smb, the previews for camera-raw (ORF, CRW, CR2..) are not shown. All possible setup/hacks/tests failed.

Locall, the previews are generated ok, so the thumbnail-generator is working normally. The 'don't generate over XX MiB' is of course set, all possible values tried. I can't find the problem, as there is no log generated (kernel.log, dmesg) 

STEPS TO REPRODUCE
1. Connect to smb over Dolphin (Proxmox Debia): everying is ok, files are accessible
2. Open a picture folder with camera-raw files
3. There are no preview-thumbnails generated for camera-raw files (JPGs are ok)
4. When I copy any of such raw-camera file to a local folder, the previews are visible

OBSERVED RESULT
No previews are generated in a smb folder

EXPECTED RESULT
Preview must be generated, as defined in the Settings (no 'over limit' is met)

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 22.04 + Plasma (both X11 and Wayland)
(available in About System)

Comment 1 andy 2024-02-08 03:41:04 UTC

UPD: When the SMB is mounted manually into the filesystem (i.e. not by Dolphin, but by "mount -t cifs"), then the previews are generated normally.