Here it is the output produced by simple-scan -d I did this: - start the program - scan first page (all working fine) - scan second page (UI frozen) - wait for the UI to become responsive again - exit program
** Attachment added: "Simple Scan debug log (both std out and std err)" https://bugs.launchpad.net/ubuntu/+source/simple-scan/+bug/1914403/+attachment/5460609/+files/simplescan.log -- 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: Incomplete 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/simple-scan/+bug/1914403/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
