Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: bluez (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/566914
Title:
Bluetooth HID barcode reader drops digits (code128)
Status in bluez package in Ubuntu:
Confirmed
Bug description:
Binary package hint: bluez
I apologize is if this the wrong place or format for the report. This
is my first bug report.
An HID bluetooth barcode reader scanning Code128 barcodes (and
possibly other symbologies) will drop repeating digits if they are
less than 8 digits apart. This does NOT happen if the repeating
digits are back to back.
Example the number encoded in a code128 barcode then scanned with a bluetooth
HID barcode reader:
-"1234567890" will properly return "1234567890"
-"10" will properly return "10"
-"100" will properly return 100 (the repeating zero's are back to back, so
no problem)
-"1010" will IMPROPERLY return "10"
-"10101" will IMPROPERLY return "10"
-"101010" will IMPROPERLY return "10"
-"1010101" will IMPROPERLY return "10"
-"10101010" will IMPROPERLY return "100" (yes 100)
The test system has a USB (Anycom or Trendnet) bluetooth USB dongles
with an Intermec sf51 bluetooth HID barcode scanner successfully
paired (as HID profile) to the Ubuntu system.
Using USBMON in debug I can see the all of the proper digits coming
across in hex. There are no dropped digits. I then used HCIDump and
again saw all the digits coming across without loss. Using Showkey
shows the problem I believe.
Scanning the barcode "1010" shows this in showkey:
keycode 2 press
keycode 11 press
keycode 2 release
keycode 11 release
Keycode 2 is "1" and Keycode 11 is "0".
More complex numbers better illustrate the problem:
Scanning the barcode "L003184192" returns "L00318492". The "1" is
missing. This is what appears in showkey (I've added the ASCII
letter after the "press" or "release" statement from showkey for this
example text):
keycode 42 press (shift)
keycode 38 press (L)
keycode 42 release (shift)
keycode 38 release (L)
keycode 11 press (0)
keycode 11 release (0)
keycode 11 press (0)
keycode 4 press (3)
keycode 2 press (1)
keycode 9 press (8)
keycode 5 press (4)
keycode 10 press (10)
keycode 11 release (0)
keycode 4 release (3)
keycode 2 release (1)
keycode 9 release (8)
keycode 5 release (4)
keycode 10 release (9)
keycode 3 press (2)
keycode 3 release (2)
What looks to be happening is that the missing "1" key is "pressed" at
the beginning of the input and is not "released" in time to be
"pressed" again.
This bug has existed in Ubuntu in all versions I've tried back to 7.10 (and
confirmed in 8.10, 9.04 and 10.2 beta).
---
Architecture: i386
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
InterestingModules: rfcomm sco bnep l2cap btusb bluetooth
MachineType: Dell Computer Corporation Dimension 4550
Package: bluez 4.60-0ubuntu8 [modified: lib/udev/rules.d/97-bluetooth.rules]
PackageArchitecture: i386
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic
root=UUID=5e6ab2fa-2a8c-430a-89f3-63ffc056c7f8 ro quiet splash
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-16.25-generic
Tags: lucid
Uname: Linux 2.6.32-16-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 09/23/2003
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A08
dmi.board.vendor: Dell Computer Corp.
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Computer Corporation
dmi.modalias:
dmi:bvnDellComputerCorporation:bvrA08:bd09/23/2003:svnDellComputerCorporation:pnDimension4550:pvr:rvnDellComputerCorp.:rn:rvr:cvnDellComputerCorporation:ct6:cvr:
dmi.product.name: Dimension 4550
dmi.sys.vendor: Dell Computer Corporation
hciconfig:
hci0: Type: BR/EDR Bus: USB
BD Address: 00:16:38:C9:95:4C ACL MTU: 1017:8 SCO MTU: 64:1
UP RUNNING PSCAN
RX bytes:1863 acl:29 sco:0 events:45 errors:0
TX bytes:612 acl:10 sco:0 commands:33 errors:0
rfkill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
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