[plug] USB Suddenly not working

Timothy White weirdit at gmail.com
Fri Aug 11 12:42:59 WST 2006


Arg! This is a pain!

Running Dapper, plugging in USB devices before has never been a
problem. Now for some reason, the /dev/sd* entries aren't being
created!
$ ls /dev/sd*
/dev/sda  /dev/sda1
(sda is my sata drive)

Then I watch the Syslog as I plugin a usb device.
---
Aug 11 12:36:46 linjeni kernel: [527245.713299] usb 2-6: new high
speed USB device using ehci_hcd and address 14
Aug 11 12:36:47 linjeni kernel: [527245.839774] scsi12 : SCSI
emulation for USB Mass Storage devices
Aug 11 12:36:47 linjeni kernel: [527245.839847] usb-storage: device found at 14
Aug 11 12:36:47 linjeni kernel: [527245.839850] usb-storage: waiting
for device to settle before scanning
Aug 11 12:36:52 linjeni kernel: [527251.292749]   Vendor: Generic
Model: STORAGE DEVICE    Rev: 1.01
Aug 11 12:36:52 linjeni kernel: [527251.292760]   Type:
Direct-Access                      ANSI SCSI revision: 00
Aug 11 12:36:52 linjeni kernel: [527251.295743] SCSI device sdc: 62592
512-byte hdwr sectors (32 MB)
Aug 11 12:36:52 linjeni kernel: [527251.298739] sdc: test WP failed,
assume Write Enabled
Aug 11 12:36:52 linjeni kernel: [527251.298743] sdc: assuming drive
cache: write through
Aug 11 12:36:52 linjeni kernel: [527251.303737] SCSI device sdc: 62592
512-byte hdwr sectors (32 MB)
Aug 11 12:36:52 linjeni kernel: [527251.306744] sdc: test WP failed,
assume Write Enabled
Aug 11 12:36:52 linjeni kernel: [527251.306749] sdc: assuming drive
cache: write through
Aug 11 12:36:52 linjeni kernel: [527251.306753]  sdc: sdc1
Aug 11 12:36:52 linjeni kernel: [527251.311010] sd 12:0:0:0: Attached
scsi removable disk sdc
Aug 11 12:36:52 linjeni kernel: [527251.311060] sd 12:0:0:0: Attached
scsi generic sg1 type 0
Aug 11 12:36:52 linjeni kernel: [527251.314736] usb-storage: device
scan complete
---

But no sdc or sdc1 appear in /dev/!!!

It used to work!
$ ps aux|grep udev
root      2406  0.0  0.0  11004   428 ?        S<s  Aug05   0:00
/sbin/udevd --daemon

According to mount
udev on /dev type tmpfs (rw)

$ lsmod|grep usb
usbhid                 42912  0
usb_storage            81984  1
usbcore               145980  5 usbhid,usb_storage,ehci_hcd,ohci_hcd
scsi_mod              160504  4 sg,usb_storage,sd_mod,libata


I don't know what has changed recently! It has been working since the
last reboot, I'm certain!
~$ uname -a
Linux linjeni 2.6.15-23-amd64-generic #1 SMP PREEMPT Tue May 23
13:45:47 UTC 2006 x86_64 GNU/Linux

Any ideas much appreciated!

Tim
-- 
Linux Counter user #273956
Don't email joeblogs at scouts.org.au



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