Hallo Michael Thank you for responding. The problem is not caused by Simple Scan. Simple Scan supports my scanner perfectly. However both Simple Scan and XSANE can be used to reproduce a USB problem which leads to system freeze. The freeze happens if the scanner is not listed in first position of USB device enumeration.
Best Regards Marcus //-- NO system freeze if scanner is the first device listed zaphod@rama:~$ lsusb Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 003 Device 002: ID 04a9:1901 Canon, Inc. CanoScan 8800F Bus 005 Device 002: ID 2109:0811 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 003: ID 045e:076c Microsoft Corp. zaphod@rama:~$ //-- system freeze (usb keyboard, usb mouse) zaphod@rama:~$ lsusb Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 003 Device 002: ID 046a:0023 Cherry GmbH CyMotion Master Linux Keyboard Bus 005 Device 002: ID 2109:0811 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 003: ID 04a9:1901 Canon, Inc. CanoScan 8800F Bus 005 Device 004: ID 045e:076c Microsoft Corp. zaphod@rama:~$ //-- system freeze (PS/2 keyboard, usb mouse) zaphod@rama:~$ lsusb Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 003 Device 002: ID 045e:076c Microsoft Corp. Bus 005 Device 002: ID 2109:0811 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 003: ID 04a9:1901 Canon, Inc. CanoScan 8800F zaphod@rama:~$ //-- system freeze (PS/2 keyboard, usb mouse) zaphod@rama:~$ lsusb Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub Bus 005 Device 002: ID 2109:0811 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 005 Device 004: ID 045e:076c Microsoft Corp. Bus 005 Device 003: ID 04a9:1901 Canon, Inc. CanoScan 8800F zaphod@rama:~$ ** Attachment added: "simple-scan.log" https://bugs.launchpad.net/ubuntu/+source/simple-scan/+bug/1114253/+attachment/3519514/+files/simple-scan.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1114253 Title: system freeze while simple-scan (canon, usb) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/simple-scan/+bug/1114253/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
