Bug 407695

Summary: Progress bar shown in the task manager "jumps" while K3b burns a disc if "Verify written data" option was checked
Product: [Applications] k3b Reporter: Patrick Silva <bugseforuns>
Component: generalAssignee: k3b developers <k3b>
Status: REPORTED ---    
Severity: normal CC: michalm, plasma-bugs, trueg
Priority: NOR    
Version: 21.04.2   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: screen recording

Description Patrick Silva 2019-05-18 16:04:28 UTC
Created attachment 120171 [details]
screen recording

STEPS TO REPRODUCE
1. open K3b
2. insert a writable disc (I used a DVD-RW disc)
3. click "Tools" menu > "Burn image..."
4. choose an ISO image to burn
5. check "Verify written data" option (I only can reproduce the issue if this option is checked)
6. click "Start" button

OBSERVED RESULT
As we can see in the attached screen recording,
the progress bar shown in the task manager "jumps" while K3b burns the disc.

EXPECTED RESULT
The progress bar shown in the task manager does not "jump" while K3b burns the disc.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.15.90
KDE Frameworks Version: 5.58.0
Qt Version: 5.13.0 beta3
Comment 1 Eike Hein 2019-05-20 04:02:41 UTC
The progress reported to the Task Manager is up to K3b.
Comment 2 Patrick Silva 2020-02-05 13:48:30 UTC
Tested again with K3b 19.12.2.
This behavior occured just once while K3b burned gparted ISO image to a DVD-RW disc.

Operating System: Arch Linux 
KDE Plasma Version: 5.17.90
KDE Frameworks Version: 5.66.0
Qt Version: 5.14.1
Comment 3 Patrick Silva 2021-07-03 20:47:02 UTC
It happened again on Arch Linux while K3b 21.04.2 was burning a data project
to a blu-ray disc.