Bug 1032805

+++ This bug was initially created as a clone of Bug #1028549 +++

Description of problem:
SCSI Scanner not recognized by system

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.Boot system
2.Run sane.
3.

Actual results:
No scanner

Expected results:
Should see scanner

Additional info:

--- Additional comment from Nils Philippsen on 2013-11-14 05:50:51 EST ---

This bug report is missing essential information:

- What type of scanner is this?
- Please post the output of the following commands:

cat /proc/scsi/scsi
ls -lZ /dev/sg*

--- Additional comment from Nils Philippsen on 2013-11-14 06:00:00 EST ---

Ahh, it's probably the scanner you mentioned in bug #919874, a Umax Astra 2400S attached to a Domex 536 SCSI host adapter. I'll still need the output of the two commands from comment #1, thanks!

--- Additional comment from Nils Philippsen on 2013-11-14 06:06:43 EST ---



--- Additional comment from KitchM on 2013-11-14 10:32:28 EST ---

Umax Astra 2400S

Attached devices:
Host: scsi4 Channel: 00 Id: 01 Lun: 00
  Vendor: UMAX     Model: Astra 2400S      Rev: V1.1
  Type:   Scanner                          ANSI  SCSI revision: 02
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: ATA      Model: WDC WD400EB-00CP Rev: 06.0
  Type:   Direct-Access                    ANSI  SCSI revision: 05
Host: scsi1 Channel: 00 Id: 00 Lun: 00
  Vendor: PLEXTOR  Model: CD-R   PX-W2410A Rev: 1.02
  Type:   CD-ROM                           ANSI  SCSI revision: 05
Host: scsi1 Channel: 00 Id: 01 Lun: 00
  Vendor: ASUS     Model: DRW-1814BL       Rev: 1.14
  Type:   CD-ROM                           ANSI  SCSI revision: 05
Host: scsi2 Channel: 00 Id: 00 Lun: 00
  Vendor: ATA      Model: KINGSTON SV300S3 Rev: 505A
  Type:   Direct-Access                    ANSI  SCSI revision: 05


crw-------  root root  ?                                /dev/sg0
crw-rw----  root disk  ?                                /dev/sg2
crw-rw----+ root cdrom ?                                /dev/sg3
crw-rw----+ root cdrom ?                                /dev/sg4
crw-rw----  root disk  ?                                /dev/sg5


Thank you.

--- Additional comment from Nils Philippsen on 2013-11-15 11:30:42 EST ---

It seems as if the permissions of your scanner device /dev/sg0 aren't set up correctly. Please run the following command for me (as root) and post the output:

udevadm info --query=all /dev/sg0

We need to find out what udev makes of this device.

--- Additional comment from KitchM on 2013-11-15 12:13:07 EST ---

Here's the response:

P: /devices/pci0000:00/0000:00:06.0/ata1/host0/target0:0:0/0:0:0:0/scsi_generic/sg0
N: sg0
E: DEVNAME=/dev/sg0
E: DEVPATH=/devices/pci0000:00/0000:00:06.0/ata1/host0/target0:0:0/0:0:0:0/scsi_generic/sg0
E: MAJOR=21
E: MINOR=0
E: SUBSYSTEM=scsi_generic




Thanks much.

--- Additional comment from Nils Philippsen on 2013-11-20 16:10:42 EST ---

Sorry for the wait but I think that I have found the cause of your problem in the meantime (I could reproduce the issue with my own SCSI hardware):

- The udev rules shipped with sane-backends seem to have ceased working, I can only speculate that this is due to some changes in sysfs.
- This resulted in the system not recognizing your scanner as such, i.e. not giving your user the necessary permissions on its SCSI generic device file.
- I've modified my local udev rules and with the changes I did, my SCSI scanner was again recognized as such, and the device file got the proper permissions.

I've committed a patch upstream and will build packages containing the fix shortly.