I've had this happen over time when a drive is nearing EOL, as generally
the drive would get flaky and not show up occasionally. Replacing it
with a new one worked... This has happened several times with internal
or usb units.
Run "tail -f /var/log/syslog" to see if udev finds it when inserted and
creates the /dev/sr0 interface for it. Flaky ones would usually probe,
but not respond correctly giving errors in syslog, and thus not fully
building the /dev/sr0 interface being amiss.
-mb
On 12/08/2012 12:26 PM,
joe@actionline.com wrote:
>
> Thanks to all. It is working now.
> Actually, I did not change anything,
> but when I tried it again today,
> it worked fine.
>
> ---------
>> You did not say what distro or release you are running so some answers
>> people supply may not be right for your system. That said, see below:
>>
>> On Fri, Dec 7, 2012 at 12:49 PM,<joe@actionline.com> wrote:
>>
>>> I have an external dvd burner connected to my computer,
>>> but when I try to run K3b, the following message appears:
>>>
>>>> No optical drive found.
>>>> K3b did not find any optical device in your system.
>>>> Solution: Make sure HAL daemon is running, it is used
>>>> by K3b for finding devices.
>>>
>>> How can I determine if the HAL daemon is running?
>>> Or if it is not, what do I need to do to make sure that
>>> it always does run?
>>>
>>
>> On my Ubuntu 12.04 and 12.10 systems, I do not see a hal daemon running,
>> but plugging in an external USB CD/DVD drive is visible and usable (I am
>> not set to use k3b). That makes me wonder if hal has been replaced.
>>
>> Are you plugging in the external burner BEFORE starting k3b? Sometimes a
>> program queries for available devices only on program start. If you start
>> k3b first, exit and only start it AFTER plugging in the device. Also, try
>> having some media in the drive before starting k3b.
>>
>> Is it only k3b that does not see the external drive. If the who system
>> does not see it, the problem is more likely the external drive or not
>> having a valid driver for it. You might try an lsusb to see if it is even
>> visible to Linux. I get "Bus 002 Device 004: ID 0411:01dc BUFFALO INC.
>> (formerly MelCo., Inc.)".
>>
>> You could also do an lshw -short before plugging it in and another after
>> to
>> see if another line was listed such as "/2 scsi7 storage".
>>
>> If you don't, try some other external USB device as a test.
>>
>>>
>>>
>>>
>>>
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>>
>>
>>
>
>
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