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Bug#644747: linux-image-3.0.0-2-amd64: udev doesn't create /dev/sr0, /dev/cdrom



On Sat, 2011-10-08 at 23:21 +0530, R S Chakravarti wrote:
> Package: linux-2.6
> Version: 3.0.0-5
> Severity: important
> 
> Dear Maintainer,
> *** Please consider answering these questions, where appropiate ***
> 
>    * What led up to the situation?       I noticed that it didn't mount the
> CDROM.
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?       I added the entry "cdrom" in /etc/modules.
>    * What was the outcome of this action?       The module "cdrom" gets loaded
> but /dev/sr0 is not created.
>    * What outcome did you expect instead?       I thought /dev/sr0 would be
> created.

The 'cdrom' module is not a driver but is *used* by drivers.  The driver
for the SATA interface (ata_piix in this case) is supposed to detect
SATA devices and request the appropriate driver for the device types
found (sr_mod for a CD-ROM).  Since sr_mod has not been loaded, it
appears that the problem is in device detection.  (And loading sr_mod
should have no more effect than loading cdrom, because no device has
been found for it to bind to.)

> *** End of the template - remove these lines ***
> 
> 
> 
> -- Package-specific info:
> ** Version:
> Linux version 3.0.0-2-amd64 (Debian 3.0.0-5) (ben@decadent.org.uk) (gcc version 4.5.3 (Debian 4.5.3-9) ) #1 SMP Fri Oct 7 20:48:45 UTC 2011
> 
> ** Command line:
> BOOT_IMAGE=/boot/vmlinuz-3.0.0-2-amd64 root=UUID=2237ebe0-15cb-40db-bed9-d4f5ff052689 ro single
> 
> ** Tainted: O (4096)
>  * Out-of-tree module has been loaded.
> 
> ** Kernel log:
> [   20.693330] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
> [   20.693453] HDA Intel 0000:00:1b.0: irq 43 for MSI/MSI-X
> [   20.693483] HDA Intel 0000:00:1b.0: setting latency timer to 64
[...]

Unfortunately this log starts too late.  Please could you send the
/var/log/dmesg file.

Ben.

-- 
Ben Hutchings
For every action, there is an equal and opposite criticism. - Harrison

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