Public bug reported:
In Kubuntu 20.04 Simple Scan application shows the following behaviour on my
system.
While scanning the first page, all works fine: the UI is responsive and the
live preview of the page being scanned is shown.
Starting from the second page on, while the page scanning is in progress the UI
is completely frozen and hence no live preview is shown. Trying to click on the
application window shows the UI is completely unresponsive. This lasts until
around 10 seconds after the page scanning has been completed (and the scanner
light has returned to the "home" position).
Apart from this, the application works, but this slows down multi-page scanning
process and hurts user experience.
My scanner is a Canon LiDE 110, a flatbed one.
Simple Scan was working perfectly fine in Ubuntu 16.04 and Ubuntu 14.04
on the same system (after upgrading SANE drivers, but for a completely
different reason) and was not showing this behaviour.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: simple-scan 3.36.3-0ubuntu0.20.04.0
ProcVersionSignature: Ubuntu 5.4.0-65.73-generic 5.4.78
Uname: Linux 5.4.0-65-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Wed Feb 3 13:04:50 2021
InstallationDate: Installed on 2020-10-05 (120 days ago)
InstallationMedia: Kubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
MachineType: Hewlett-Packard HP ProBook 450 G1
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-65-generic
root=/dev/mapper/vgkubuntu-root ro quiet splash zswap.enabled=1
zswap.compressor=lz4 vt.handoff=7
SimpleScanLog: [+0,00s] DEBUG: simple-scan.vala:1720: Starting
/usr/bin/simple-scan 3.36.3, PID=56452
SourcePackage: simple-scan
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/18/2020
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: L74 Ver. 01.50
dmi.board.name: 1942
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 12.F4
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvrL74Ver.01.50:bd02/18/2020:svnHewlett-Packard:pnHPProBook450G1:pvrA3009DD10303:rvnHewlett-Packard:rn1942:rvrKBCVersion12.F4:cvnHewlett-Packard:ct10:cvr:
dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=PRO
dmi.product.name: HP ProBook 450 G1
dmi.product.sku: E9Y21EA#ABZ
dmi.product.version: A3009DD10303
dmi.sys.vendor: Hewlett-Packard
** Affects: simple-scan (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal third-party-packages
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to simple-scan in Ubuntu.
https://bugs.launchpad.net/bugs/1914403
Title:
Simple Scan UI freezes while scanning from second page on
Status in simple-scan package in Ubuntu:
New
Bug description:
In Kubuntu 20.04 Simple Scan application shows the following behaviour on my
system.
While scanning the first page, all works fine: the UI is responsive and the
live preview of the page being scanned is shown.
Starting from the second page on, while the page scanning is in progress the
UI is completely frozen and hence no live preview is shown. Trying to click on
the application window shows the UI is completely unresponsive. This lasts
until around 10 seconds after the page scanning has been completed (and the
scanner light has returned to the "home" position).
Apart from this, the application works, but this slows down multi-page
scanning process and hurts user experience.
My scanner is a Canon LiDE 110, a flatbed one.
Simple Scan was working perfectly fine in Ubuntu 16.04 and Ubuntu
14.04 on the same system (after upgrading SANE drivers, but for a
completely different reason) and was not showing this behaviour.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: simple-scan 3.36.3-0ubuntu0.20.04.0
ProcVersionSignature: Ubuntu 5.4.0-65.73-generic 5.4.78
Uname: Linux 5.4.0-65-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Wed Feb 3 13:04:50 2021
InstallationDate: Installed on 2020-10-05 (120 days ago)
InstallationMedia: Kubuntu 20.04.1 LTS "Focal Fossa" - Release amd64
(20200731)
MachineType: Hewlett-Packard HP ProBook 450 G1
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-65-generic
root=/dev/mapper/vgkubuntu-root ro quiet splash zswap.enabled=1
zswap.compressor=lz4 vt.handoff=7
SimpleScanLog: [+0,00s] DEBUG: simple-scan.vala:1720: Starting
/usr/bin/simple-scan 3.36.3, PID=56452
SourcePackage: simple-scan
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/18/2020
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: L74 Ver. 01.50
dmi.board.name: 1942
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 12.F4
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvrL74Ver.01.50:bd02/18/2020:svnHewlett-Packard:pnHPProBook450G1:pvrA3009DD10303:rvnHewlett-Packard:rn1942:rvrKBCVersion12.F4:cvnHewlett-Packard:ct10:cvr:
dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=PRO
dmi.product.name: HP ProBook 450 G1
dmi.product.sku: E9Y21EA#ABZ
dmi.product.version: A3009DD10303
dmi.sys.vendor: Hewlett-Packard
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