https://bugzilla.novell.com/show_bug.cgi?id=408690 User danielstefanmader@web.de added comment https://bugzilla.novell.com/show_bug.cgi?id=408690#c1 --- Comment #1 from Daniel Mader 2008-07-13 04:10:56 MDT --- Here's another extract from /var/log/messages. --------------------------------------------------- Successful USB attachment: Jul 13 12:01:26 dionysos kernel: hub 2-0:1.0: unable to enumerate USB device on port 1 Jul 13 12:01:26 dionysos kernel: usb 1-1: new full speed USB device using uhci_hcd and address 3 Jul 13 12:01:26 dionysos kernel: usb 1-1: configuration #1 chosen from 1 choice Jul 13 12:01:26 dionysos kernel: usb 1-1: New USB device found, idVendor=07b4, idProduct=0118 Jul 13 12:01:26 dionysos kernel: usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Jul 13 12:01:26 dionysos kernel: usb 1-1: Product: u720SW,S720SW Jul 13 12:01:26 dionysos kernel: usb 1-1: Manufacturer: OLYMPUS Jul 13 12:01:26 dionysos kernel: usb 1-1: SerialNumber: B04512191 Jul 13 12:01:26 dionysos kernel: Initializing USB Mass Storage driver... Jul 13 12:01:26 dionysos kernel: scsi2 : SCSI emulation for USB Mass Storage devices Jul 13 12:01:26 dionysos kernel: usbcore: registered new interface driver usb-storage Jul 13 12:01:26 dionysos kernel: USB Mass Storage support registered. Jul 13 12:01:26 dionysos kernel: usb-storage: device found at 3 Jul 13 12:01:26 dionysos kernel: usb-storage: waiting for device to settle before scanning Jul 13 12:01:27 dionysos kernel: scsi 2:0:0:0: Direct-Access OLYMPUS u720SW,S720SW 1.00 PQ: 0 ANSI: 2 Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] 2047815 512-byte hardware sectors (1048 MB) Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] Write Protect is off Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] Mode Sense: 17 00 00 08 Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] Assuming drive cache: write through Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] 2047815 512-byte hardware sectors (1048 MB) Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] Write Protect is off Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] Mode Sense: 17 00 00 08 Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] Assuming drive cache: write through Jul 13 12:01:27 dionysos kernel: sdb: sdb1 Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: [sdb] Attached SCSI removable disk Jul 13 12:01:27 dionysos kernel: sd 2:0:0:0: Attached scsi generic sg2 type 0 Jul 13 12:01:27 dionysos kernel: usb-storage: device scan complete Jul 13 12:01:29 dionysos hald: mounted /dev/sdb1 on behalf of uid 2751 Jul 13 12:01:57 dionysos hald: unmounted /dev/sdb1 from '/media/disk' on behalf of uid 2751 Jul 13 12:02:05 dionysos kernel: usb 1-1: USB disconnect, address 3 --------------------------------------------------- And the failing attachment of the Panasonic camera: Jul 13 12:02:49 dionysos kernel: hub 2-0:1.0: unable to enumerate USB device on port 6 Jul 13 12:02:49 dionysos kernel: usb 4-2: new full speed USB device using uhci_hcd and address 2 Jul 13 12:02:49 dionysos kernel: usb 4-2: configuration #1 chosen from 1 choice Jul 13 12:02:49 dionysos kernel: scsi3 : SCSI emulation for USB Mass Storage devices Jul 13 12:02:49 dionysos kernel: usb 4-2: New USB device found, idVendor=04da, idProduct=2372 Jul 13 12:02:49 dionysos kernel: usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Jul 13 12:02:49 dionysos kernel: usb 4-2: Product: DMC-LX2 Jul 13 12:02:49 dionysos kernel: usb 4-2: Manufacturer: Panasonic Jul 13 12:02:49 dionysos kernel: usb-storage: device found at 2 Jul 13 12:02:49 dionysos kernel: usb-storage: waiting for device to settle before scanning Jul 13 12:11:48 dionysos kernel: usb 4-2: USB disconnect, address 2 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=408690 User danielstefanmader@web.de added comment https://bugzilla.novell.com/show_bug.cgi?id=408690#c2 Daniel Mader changed: What |Removed |Added ---------------------------------------------------------------------------- Component|Basesystem |Hotplug --- Comment #2 from Daniel Mader 2008-07-23 01:12:42 MDT --- Still the same with the latest update kernel-default-2.6.25.11-0.1 ! Changing component to "Hotplug" since I have seen some similar reports there already... It would be nice to at least get a hint of how to workaround this issue! -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=408690 Greg Kroah-Hartman changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|kernel-maintainers@forge.provo.novell.com |kde-maintainers@suse.de -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=408690 User lpechacek@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=408690#c4 --- Comment #4 from Libor Pechacek 2008-10-22 12:53:24 MDT --- Created an attachment (id=247258) --> (https://bugzilla.novell.com/attachment.cgi?id=247258) kernel log from a digital camera hotplug I observed the same behavior with Panasonic DMC-LZ1. I identified it as a race between in-kernel USB storage scan and kio_kamera process. The USB storage kernel thread sleeps at drivers/usb/storage/usb.c:910 and waits for "delay_use" seconds before it proceeds scsi_scan_host. Meanwhile kio_kamera kicks in and disconnects the USB storage driver from the device using the usbfs IOCTL. The kernel thread wakes up and sees the device gone, as it was disconnected while it was sleeping, so it does not proceed with the usual SCSI stuff, and the mass storage interface is inaccessible. A possible workaround is to set delay_use=0 for the usb_storage kernel module, so that kio_kamera has no time to disconnect the driver from the device, or unistall kdegraphics3-kamera package. The race is easy to reproduce with higher delay_use values. The kernel log is attached for reference. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

https://bugzilla.novell.com/show_bug.cgi?id=408690 User danielstefanmader@web.de added comment https://bugzilla.novell.com/show_bug.cgi?id=408690#c5 --- Comment #5 from Daniel Mader 2008-10-23 02:01:26 MDT --- Thank you very much! -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.