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, [email protected] 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,<[email protected]> 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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