Hi; After upgrading my kernel from 2.6.18 to 3.5.3. I started to get udev errors when I plug in my usb modem device(errors are below). I think this is causing my usb_modeswitch not to work properly. Same error occurs for usb-storage devices too. Can you provide a solution or what is the cause? udev version: 095 Dec 5 12:20:18 2012 kernel: [74465.103460] usb 2-1.4: new high-speed USB device number 36 using ehci_hcd Dec 5 12:20:18 2012 kernel: [74465.194011] scsi62 : usb-storage 2-1.4:1.0 Dec 5 12:20:18 2012 kernel: [74465.194091] scsi63 : usb-storage 2-1.4:1.1 Dec 5 12:20:19 2012 kernel: [74466.196062] scsi 62:0:0:0: CD-ROM HUAWEI Mass Storage 2.31 PQ: 0 ANSI: 2 Dec 5 12:20:19 2012 kernel: [74466.196441] scsi 63:0:0:0: Direct-Access HUAWEI TF CARD Storage PQ: 0 ANSI: 2 Dec 5 12:20:19 2012 kernel: [74466.198548] sr0: scsi-1 drive Dec 5 12:20:19 2012 kernel: [74466.198630] sr 62:0:0:0: Attached scsi generic sg1 type 5 Dec 5 12:20:19 2012 kernel: [74466.198719] sd 63:0:0:0: Attached scsi generic sg2 type 0 Dec 5 12:20:19 2012 kernel: [74466.201555] sd 63:0:0:0: [sdb] Attached SCSI removable disk Dec 5 12:20:22 2012 udevd-event[18390]: wait_for_sysfs: waiting for \'/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0/host62/ioerr_cnt\' failed Dec 5 12:20:22 2012 udevd-event[18391]: wait_for_sysfs: waiting for \'/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.1/host63/ioerr_cnt\' failed Dec 5 12:20:25 2012 udevd-event[18443]: wait_for_sysfs: waiting for \'/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.1/host63/target63:0:0/ioerr_cnt\' failed Dec 5 12:20:25 2012 udevd-event[18442]: wait_for_sysfs: waiting for \'/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.0/host62/target62:0:0/ioerr_cnt\' failed Thanks in advance. -- Deniz Eren -- To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html