Bug 475170

Summary: Skanlite cannot connect to USB scanner unless first initialized by 3rd party app (vuescan)
Product: [Applications] Skanlite Reporter: Gregor B. Rosenauer <gregor.rosenauer>
Component: generalAssignee: Kåre Särs <kare.sars>
Status: REPORTED ---    
Severity: normal    
Priority: NOR    
Version First Reported In: 23.08.1   
Target Milestone: ---   
Platform: Manjaro   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Gregor B. Rosenauer 2023-10-03 11:15:41 UTC
SUMMARY

USB Scanner Epson Perfection 2480 Photo is not recognised unless first initialized by a 3rd party app (VueScan).

STEPS TO REPRODUCE
1. start Skanlite
2. Scanner is detected and listed in sources dialog
3. select the Epson scanner and press OK

OBSERVED RESULT

A generic error displayed ("could not connect to scanner" or similar) and you have to quit the app.

EXPECTED RESULT

preview window should appear.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Manjaro KDE Edition
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.110.0
Qt Version: 5.15.10

ADDITIONAL INFORMATION

If you initialise the scanner by starting e.g. VueScan (free demo available at https://www.hamrick.com/ and in AUR/pamac as package "vuescan-bin") and THEN start scanlite, it works as expected.