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Old 03-07-2013, 01:47 AM   #1
dkshah
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USB card reader not detected in fdisk -l


I am having USB card reader.
I plugged in machine, it won't show in fdisk -l command.
When I am giving dmesg | tail in command prompt as superuser, it gives me output like:

Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sdc at scsi9, channel 0, id 0, lun 0
USB Mass Storage device found at 10
usb 1-5: USB disconnect, address 10

please help me to detect my usb card reader
 
Old 03-07-2013, 02:29 AM   #2
jschiwal
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You might be omitting some lines or reading the wrong part of the dmesg output. Run "sudo tail -f /var/log/messages" before inserting the thumb drive or SD card. Then insert the drive and monitor the live kernel messages. An SD card reader may have an /dev/mmc# device node instead of a /dev/sd# node.

Try different USB drives. The one you tried might not have a file system on it. My desktop creates fixed nodes for it's media drives before a card is inserted. So I have a /dev/sde for one of the slots set up at boot time. After inserting a card, an sde1 node is created.

Last edited by jschiwal; 03-07-2013 at 02:33 AM.
 
Old 03-07-2013, 03:36 AM   #3
dkshah
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usb card reader not detected in fdisk -l

as per your instruction i have take messages before inserting usb card reader and after inserting which are as below

before inserting:--

Mar 7 14:43:15 bsnl hald[3956]: Timed out waiting for hotplug event 819. Rebasing to 820
Mar 7 14:43:22 bsnl kernel: usb 1-6: new high speed USB device using address 19Mar 7 14:43:22 bsnl kernel: scsi18 : SCSI emulation for USB Mass Storage devices
Mar 7 14:43:37 bsnl hal.hotplug[24666]: timout(10000 ms) waiting for /devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6:1.0
Mar 7 14:44:12 bsnl kernel: usb-storage: Bus reset ended with -16
Mar 7 14:44:28 bsnl kernel: scsi: Device offlined - not ready after error recovery: host 18 channel 0 id 0 lun 0
Mar 7 14:44:28 bsnl hald[3956]: Timed out waiting for hotplug event 824. Rebasing to 825
Mar 7 14:44:30 bsnl hald[3956]: Timed out waiting for hotplug event 826. Rebasing to 824
Mar 7 14:44:47 bsnl kernel: usb 1-6: USB disconnect, address 19
Mar 7 14:44:48 bsnl hald[3956]: Timed out waiting for hotplug event 825. Rebasing to 826


After Inserting usb card reader with sd card:

Mar 7 14:46:52 bsnl kernel: usb 1-6: new high speed USB device using address 20Mar 7 14:46:52 bsnl kernel: scsi19 : SCSI emulation for USB Mass Storage devices
Mar 7 14:46:52 bsnl kernel: Vendor: VIA-P Model: VT6205-DevA Rev: 2.50
Mar 7 14:46:52 bsnl kernel: Type: Direct-Access ANSI SCSI revision: 02
Mar 7 14:46:52 bsnl kernel: Attached scsi removable disk sdc at scsi19, channel 0, id 0, lun 0
Mar 7 14:46:52 bsnl scsi.agent[24971]: disk at /devices/pci0000:00/0000:00:1d.7/usb1/1-6/1-6:1.0/host19/target19:0:0/19:0:0:0


but still not detected in fdisk -l

normal usb drive(pen drive) are detected
pls help me
 
  


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