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Thread: Asus dvd writer 1608P2S-D not detected

  1. #1
    Join Date
    Mar 2007
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    57

    Asus dvd writer 1608P2S-D not detected

    Hi, I have an Asus DRW 1608P2S-D connected via USB 2 which is not being detected.

    dave@daves-desktop:~$ tail -n 20 /var/log/kern.log
    Aug 4 16:20:30 daves-desktop kernel: [ 784.993752] usb 4-4: USB disconnect, address 65
    Aug 4 16:20:30 daves-desktop kernel: [ 785.266334] usb 4-4: new high speed USB device using ehci_hcd and address 66
    Aug 4 16:20:30 daves-desktop kernel: [ 785.505480] usb 4-4: configuration #1 chosen from 1 choice
    Aug 4 16:20:30 daves-desktop kernel: [ 785.535441] scsi47 : SCSI emulation for USB Mass Storage devices
    Aug 4 16:20:30 daves-desktop kernel: [ 785.542428] usb-storage: device found at 66
    Aug 4 16:20:30 daves-desktop kernel: [ 785.542435] usb-storage: waiting for device to settle before scanning
    Aug 4 16:20:31 daves-desktop kernel: [ 785.932462] usb 4-4: USB disconnect, address 66
    Aug 4 16:20:31 daves-desktop kernel: [ 786.170074] usb 4-4: new high speed USB device using ehci_hcd and address 67
    Aug 4 16:20:31 daves-desktop kernel: [ 786.409247] usb 4-4: configuration #1 chosen from 1 choice
    Aug 4 16:20:31 daves-desktop kernel: [ 786.439195] scsi48 : SCSI emulation for USB Mass Storage devices
    Aug 4 16:20:31 daves-desktop kernel: [ 786.446176] usb-storage: device found at 67
    Aug 4 16:20:31 daves-desktop kernel: [ 786.446183] usb-storage: waiting for device to settle before scanning
    Aug 4 16:20:32 daves-desktop kernel: [ 786.839081] usb 4-4: USB disconnect, address 67
    Aug 4 16:20:32 daves-desktop kernel: [ 787.077826] usb 4-4: new high speed USB device using ehci_hcd and address 68
    Aug 4 16:20:32 daves-desktop kernel: [ 787.321145] usb 4-4: configuration #1 chosen from 1 choice
    Aug 4 16:20:32 daves-desktop kernel: [ 787.356941] scsi49 : SCSI emulation for USB Mass Storage devices
    Aug 4 16:20:32 daves-desktop kernel: [ 787.369403] usb-storage: device found at 68
    Aug 4 16:20:32 daves-desktop kernel: [ 787.369410] usb-storage: waiting for device to settle before scanning
    Aug 4 16:20:33 daves-desktop kernel: [ 788.434409] usb 4-4: USB disconnect, address 68
    Aug 4 16:20:34 daves-desktop kernel: [ 788.705388] usb 4-4: new high speed USB device using ehci_hcd and address 69

    any ideas?

  2. #2
    Join Date
    Mar 2007
    Beans
    57

    Re: Asus dvd writer 1608P2S-D not detected

    Here is the last part of the output from

    $ dmesg
    [ 784.575512] scsi46 : SCSI emulation for USB Mass Storage devices
    [ 784.582690] usb-storage: device found at 65
    [ 784.582697] usb-storage: waiting for device to settle before scanning
    [ 784.993752] usb 4-4: USB disconnect, address 65
    [ 785.266334] usb 4-4: new high speed USB device using ehci_hcd and address 66
    [ 785.505480] usb 4-4: configuration #1 chosen from 1 choice
    [ 785.535441] scsi47 : SCSI emulation for USB Mass Storage devices
    [ 785.542428] usb-storage: device found at 66
    [ 785.542435] usb-storage: waiting for device to settle before scanning
    [ 785.932462] usb 4-4: USB disconnect, address 66
    [ 786.170074] usb 4-4: new high speed USB device using ehci_hcd and address 67
    [ 786.409247] usb 4-4: configuration #1 chosen from 1 choice
    [ 786.439195] scsi48 : SCSI emulation for USB Mass Storage devices
    [ 786.446176] usb-storage: device found at 67
    [ 786.446183] usb-storage: waiting for device to settle before scanning
    [ 786.839081] usb 4-4: USB disconnect, address 67
    [ 787.077826] usb 4-4: new high speed USB device using ehci_hcd and address 68
    [ 787.321145] usb 4-4: configuration #1 chosen from 1 choice
    [ 787.356941] scsi49 : SCSI emulation for USB Mass Storage devices
    [ 787.369403] usb-storage: device found at 68
    [ 787.369410] usb-storage: waiting for device to settle before scanning
    [ 788.434409] usb 4-4: USB disconnect, address 68
    [ 788.705388] usb 4-4: new high speed USB device using ehci_hcd and address 69


  3. #3
    Join Date
    Mar 2007
    Beans
    57

    Re: Asus dvd writer 1608P2S-D not detected

    the following one-liner has solved the problem, is anyone able to explain why?

    sudo modprobe -r ehci-hcd

  4. #4
    Join Date
    Mar 2007
    Beans
    57

    Re: Asus dvd writer 1608P2S-D not detected

    It seems I must run this line again each time I turn the computer on. Is there a hack to avoid doing this manually every time I turn the computer on?

    Thanks
    TDM
    Last edited by The Dragon Master; August 5th, 2008 at 10:07 AM.

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