thanks for the response
It seems the Arduino specific settings on our systems are pretty much the same. Unfortunately for me it doesn't work on my system.
I'll have a search on usb-Arduino_LLC_Arduino_Leonardo-if00 and pci-0000:00:1d.0-usb-0:2:1.0
Thanks for sharing that you have arduino in the 77-mm-usb-device-blacklist.rules file. With your explanation I know why
I have that one to; but removing didn't make a difference.
My current thinking is that I have to look for a disable rule.
Thanks

Thanks for helping out.

since the Leonardo can emulate a mouse or a keyboard the additional input devices are normal. I have them as well, but I also have /dev/ttyACM0. Any chance that other VMs on the same host (if not the host itself) are trying to install the USB device? This could explain the disconnections/reconnections you experienced before.

Thanks for confirming the additional devices. I do not have a /dev/ttyACM0 which seems to be the problem at hand.
As I'm running Linux native (I run XP in a vm) I have stopped all vm's and the vmware software and tried again. As you can see from the logs below that results in exact the same behaviour.

I don't have VMware but a couple of small VMs on VirtualBox, my host is a Mac and one VM has Lubuntu 12.10. In VirtualBox I have to assign to the VM not just the USB port, but a particular USB device (recognized as Leonardo by the host). This tells me that before I can use it on a VM the device must be recognized by the host. It may be different in VMware but may be worth of attention (can you determine if the host OS sees the Leonardo?).

The assigning of USB devices is exactly the same with VMware. If I assign the Leonardo to my windows xp VM machine it works fine.
As my host OS is Linux the host OS does see the Leonardo because A) it can assign it to a vm and B)dsmeg and lsusb see the device.

Finally, here is my dmesg after plugging the Leonardo. You'll notice that I have a different version of usb, use uhci_hcd instead of ehci_hcd, have cdc_acm create the ttyACM0 device (twice), and have one disconnection before the connection is established. This corresponds to the normal mode of operation of Leonardo: the first connection is for accessing the bootloader, then for normal operations the port is reset (just once) and the devices are created.

Thanks for sharing your dmesg output. My dmesg looks very similar except for the second connection does not result in a ttyACM* device.

Code:

bash-4.1$ dmesg | tail
usb 2-1.2: new full speed USB device number 55 using ehci_hcd
usb 2-1.2: New USB device found, idVendor=2341, idProduct=0036
usb 2-1.2: New USB device strings: Mfr=2, Product=1, SerialNumber=0
usb 2-1.2: Product: Arduino Leonardo
usb 2-1.2: Manufacturer: Arduino LLC
usb 2-1.2: configuration #1 chosen from 1 choice
cdc_acm 2-1.2:1.0: ttyACM0: USB ACM device
usb 2-1.2: USB disconnect, device number 55
usb 2-1.2: new full speed USB device number 56 using ehci_hcd
usb 2-1.2: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.2: Product: Arduino Leonardo
usb 2-1.2: Manufacturer: Arduino LLC
usb 2-1.2: configuration #1 chosen from 1 choice
input: Arduino LLC Arduino Leonardo as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.2/input/input33
generic-usb 0003:2341:8036.0015: input,hidraw1: USB HID v1.01 Mouse [Arduino LLC Arduino Leonardo] on usb-0000:00:1d.0-1.2/input2

It looks as if udev does not recognize the leonardo com port. It seems as if the ACM port is not identified by

Code:

SUBSYSTEMS=="usb", ATTRS{idProduct}=="8036", ATTRS{idVendor}=="2341"

but that is the only consistent info I see in lsusb and dmesg.

Could you provide me with the outcome of the following commands (when Leonardo connected off course)

Code:

ls -lrt /dev/serial

Code:

ls -lrt /dev/ttyA*

Code:

ls -lrt /etc/udev/rules.d/

Code:

grep 2341 /etc/udev/rules.d/*

Thanks

I still didn't get this to work.
lsusb sees the arduino

Code:

bash-4.1$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 014: ID 0a5c:217f Broadcom Corp. Bluetooth Controller
Bus 001 Device 005: ID 17ef:480f Lenovo Integrated Webcam [R5U877]
Bus 001 Device 015: ID 04b3:310c IBM Corp. Wheel Mouse
Bus 002 Device 052: ID 2341:8036 Arduino SA

I have created 99-arduino.rules with following content

Code:

SUBSYSTEMS=="usb", ATTRS{idProduct}=="8036", ATTRS{idVendor}=="2341", SYMLINK+="ttyUSB%n" , MODE:="0666"

This makes that the ls -lrt /dev/ttyU* returns following

Code:

bash-4.1$ ls -lrt /dev/ttyU*
lrwxrwxrwx. 1 root root 15 Mar 29 23:02 /dev/ttyUSB2 -> bus/usb/002/052
lrwxrwxrwx. 1 root root  7 Mar 29 23:02 /dev/ttyUSB1 -> hidraw1
lrwxrwxrwx. 1 root root 12 Mar 29 23:02 /dev/ttyUSB4 -> input/mouse4
lrwxrwxrwx. 1 root root 13 Mar 29 23:02 /dev/ttyUSB14 -> input/event14
bash-4.1$

If I unplug the Leonardo all these ports disappear.
I do not understand why there are 4 USB ports and why non of them are recognized by the Arduino IDE as Arduino Ports.
These USB ports do not seem to be serial ports

Code:

bash-4.1$ ls -lrt /dev/serial
ls: cannot access /dev/serial: No such file or directory
bash-4.1$

udev testing provides following info (shorteded because of maximum message size)

Code:

bash-4.1$ udevadm test /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2
run_command: calling: test
udevadm_test: version 147
This program is for debugging only, it does not run any program,
specified by a RUN key. It may show incorrect results, because
some values may be different, or not available at a simulation run.

udev_rules_new: rule file basename '/etc/udev/rules.d/77-mm-usb-device-blacklist.rules' already added, ignoring '/lib/udev/rules.d/77-mm-usb-device-blacklist.rules'
parse_file: reading '/lib/udev/rules.d/10-console.rules' as rules file
...
parse_file: reading '/dev/.udev/rules.d/99-root.rules' as rules file
udev_rules_new: rules use 177204 bytes tokens (14767 * 12 bytes), 39685 bytes buffer
udev_rules_new: temporary index used 56620 bytes (2831 * 20 bytes)
udev_device_new_from_syspath: device 0x7f7482263740 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2'
udev_device_new_from_syspath: device 0x7f74822638b0 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2'
udev_device_read_db: device 0x7f74822638b0 filled with db file data
udev_rules_apply_to_event: IMPORT 'usb_id --export /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2' /lib/udev/rules.d/40-libgphoto2.rules:11
util_run_program: 'usb_id --export /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2' started
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_VENDOR=Arduino_LLC'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_VENDOR_ENC=Arduino\x20LLC'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_VENDOR_ID=2341'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_MODEL=Arduino_Leonardo'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_MODEL_ENC=Arduino\x20Leonardo'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_MODEL_ID=8036'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_REVISION=0100'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_SERIAL=Arduino_LLC_Arduino_Leonardo'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_BUS=usb'
util_run_program: '/lib/udev/usb_id' (stdout) 'ID_USB_INTERFACES=:020200:0a0000:030000:'
util_run_program: 'usb_id --export /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2' returned with exitcode 0
udev_device_new_from_syspath: device 0x7f7482262a80 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2/2-1'
udev_device_new_from_syspath: device 0x7f7482251c70 has devpath '/devices/pci0000:00/0000:00:1d.0/usb2'
udev_device_new_from_syspath: device 0x7f74822268a0 has devpath '/devices/pci0000:00/0000:00:1d.0'
udev_device_new_from_syspath: device 0x7f7482226a90 has devpath '/devices/pci0000:00'
udev_rules_apply_to_event: LINK 'char/189:179' /lib/udev/rules.d/50-udev-default.rules:4
udev_rules_apply_to_event: MODE 0664 /lib/udev/rules.d/50-udev-default.rules:61
udev_rules_apply_to_event: RUN 'socket:@/org/freedesktop/hal/udev_event' /etc/udev/rules.d/90-hal.rules:2
udev_rules_apply_to_event: MODE 0666 /etc/udev/rules.d/99-arduino.rules:1
udev_rules_apply_to_event: LINK 'ttyUSB2' /etc/udev/rules.d/99-arduino.rules:1
udev_event_execute_rules: no node name set, will use kernel supplied name 'bus/usb/002/052'
udev_device_update_db: unable to create db file '/dev/.udev/db/usb:2-1.2': Permission denied
udev_node_add: creating device node '/dev/bus/usb/002/052', devnum=189:179, mode=0666, uid=0, gid=0
udev_node_mknod: preserve file '/dev/bus/usb/002/052', because it has correct dev_t
udev_node_mknod: preserve permissions /dev/bus/usb/002/052, 020666, uid=0, gid=0
udev_selinux_lsetfilecon: setfilecon /dev/bus/usb/002/052 failed: Operation not permitted
node_symlink: preserve already existing symlink '/dev/char/189:179' to '../bus/usb/002/052'
udev_selinux_lsetfilecon: setfilecon /dev/char/189:179 failed: Operation not permitted
link_find_prioritized: found '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2' claiming '/dev/.udev/links/ttyUSB2'
link_update: creating link '/dev/ttyUSB2' to '/dev/bus/usb/002/052'
node_symlink: preserve already existing symlink '/dev/ttyUSB2' to 'bus/usb/002/052'
udev_selinux_lsetfilecon: setfilecon /dev/ttyUSB2 failed: Operation not permitted
udevadm_test: UDEV_LOG=6
udevadm_test: DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2
udevadm_test: MAJOR=189
udevadm_test: MINOR=179
udevadm_test: DEVNAME=/dev/bus/usb/002/052
udevadm_test: DEVTYPE=usb_device
udevadm_test: DRIVER=usb
udevadm_test: DEVICE=/proc/bus/usb/002/052
udevadm_test: PRODUCT=2341/8036/100
udevadm_test: TYPE=0/0/0
udevadm_test: BUSNUM=002
udevadm_test: DEVNUM=052
udevadm_test: ACTION=add
udevadm_test: SUBSYSTEM=usb
udevadm_test: ID_VENDOR=Arduino_LLC
udevadm_test: ID_VENDOR_ENC=Arduino\x20LLC
udevadm_test: ID_VENDOR_ID=2341
udevadm_test: ID_MODEL=Arduino_Leonardo
udevadm_test: ID_MODEL_ENC=Arduino\x20Leonardo
udevadm_test: ID_MODEL_ID=8036
udevadm_test: ID_REVISION=0100
udevadm_test: ID_SERIAL=Arduino_LLC_Arduino_Leonardo
udevadm_test: ID_BUS=usb
udevadm_test: ID_USB_INTERFACES=:020200:0a0000:030000:
udevadm_test: DEVLINKS=/dev/char/189:179 /dev/ttyUSB2
udevadm_test: ID_MM_DEVICE_IGNORE=1
udevadm_test: run: 'socket:@/org/freedesktop/hal/udev_event'
bash-4.1$

There are some errors logged but I fail to get the link with the problem I'm having.
Help is really appreciated.

Have you selected the correct board and serial port?
If this is not the problem: Please turn on verbose for upload and dump the content of the bottom part of the arduino IDE.

Spatula
Thanks for the reply
I checked but no such device

Code:

bash-4.1$ ls -l /dev/ttyA*
ls: cannot access /dev/ttyA*: No such file or directory
bash-4.1$

The ttyACM0 is created on the first connection (108) which is immediately closed.
I see no device name on the second connection (109) so I don't have a clue what to look for.

If you wonder about the big number...
I found that running vmware makes the leonardo connect and disconnect al the time (sounds like mario when you run windows in the vm ;-) )
Each time the number gets raised twice (once for each port)
As you can see from the following dump

Code:

bash-4.1$ dmesg | tail -100
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 18 using ehci_hcd
usb 2-1.1: reset full speed USB device number 18 using ehci_hcd
usb 2-1.1: USB disconnect, device number 18
usb 2-1.1: new full speed USB device number 19 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 19 using ehci_hcd
usb 2-1.1: reset full speed USB device number 19 using ehci_hcd
usb 2-1.1: USB disconnect, device number 19
usb 2-1.1: new full speed USB device number 20 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 20 using ehci_hcd
usb 2-1.1: reset full speed USB device number 20 using ehci_hcd
usb 2-1.1: USB disconnect, device number 20
usb 2-1.1: new full speed USB device number 21 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 21 using ehci_hcd
usb 2-1.1: reset full speed USB device number 21 using ehci_hcd
usb 2-1.1: USB disconnect, device number 21
usb 2-1.1: new full speed USB device number 22 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 22 using ehci_hcd
usb 2-1.1: reset full speed USB device number 22 using ehci_hcd
usb 2-1.1: USB disconnect, device number 22
usb 2-1.1: new full speed USB device number 23 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 23 using ehci_hcd
usb 2-1.1: reset full speed USB device number 23 using ehci_hcd
usb 2-1.1: USB disconnect, device number 23
usb 2-1.1: new full speed USB device number 24 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 24 using ehci_hcd
usb 2-1.1: reset full speed USB device number 24 using ehci_hcd
usb 2-1.1: USB disconnect, device number 24
usb 2-1.1: new full speed USB device number 25 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 25 using ehci_hcd
usb 2-1.1: reset full speed USB device number 25 using ehci_hcd
usb 2-1.1: USB disconnect, device number 25
usb 2-1.1: new full speed USB device number 26 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 26 using ehci_hcd
usb 2-1.1: reset full speed USB device number 26 using ehci_hcd
usb 2-1.1: USB disconnect, device number 26
usb 2-1.1: new full speed USB device number 27 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 27 using ehci_hcd
usb 2-1.1: reset full speed USB device number 27 using ehci_hcd
usb 2-1.1: USB disconnect, device number 27
usb 2-1.1: new full speed USB device number 28 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 28 using ehci_hcd
usb 2-1.1: reset full speed USB device number 28 using ehci_hcd
usb 2-1.1: USB disconnect, device number 28
usb 2-1.1: new full speed USB device number 29 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: reset full speed USB device number 29 using ehci_hcd
usb 2-1.1: reset full speed USB device number 29 using ehci_hcd
usb 2-1.1: USB disconnect, device number 29
usb 2-1.1: new full speed USB device number 30 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: USB disconnect, device number 30
bash-4.1$

This reconnection does not happen with the micro on my system. But I do not know the port for the micro as well (so no upload on micro in linux for me right now)

I made some progress.
I replaced the usb cable  . That makes he Leonardo more responsive but still not visible in Arduino IDE 1.5.2 or 1.0.3  (also not as root )
The output of dmesg |tail

Code:

usb 2-1.1: USB disconnect, device number 107
usb 2-1.1: new full speed USB device number 108 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=0036
usb 2-1.1: New USB device strings: Mfr=2, Product=1, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: configuration #1 chosen from 1 choice
cdc_acm 2-1.1:1.0: ttyACM0: USB ACM device
usb 2-1.1: USB disconnect, device number 108
usb 2-1.1: new full speed USB device number 109 using ehci_hcd
usb 2-1.1: New USB device found, idVendor=2341, idProduct=8036
usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 2-1.1: Product: Arduino Leonardo
usb 2-1.1: Manufacturer: Arduino LLC
usb 2-1.1: configuration #1 chosen from 1 choice
input: Arduino LLC Arduino Leonardo as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.2/input/input104
generic-usb 0003:2341:8036.005C: input,hidraw1: USB HID v1.01 Mouse [Arduino LLC Arduino Leonardo] on usb-0000:00:1d.0-1.1/input2
bash-4.1$

you can clearly see the first port opening and closing and then he second port opening.
But I do not see an assignment to a usb port like with a uno.
Any help is appreciated.

Hi
I'm currently trying to get all my boards up and running on my new Linux systems.
I have successfully uploaded to 2 UNO's, 2 MEGA2560's, 1 Mega ADK and 2 of my Duemilenova's (for detail http://arduino.cc/forum/index.php/topic,151242.msg1135852.html)
When I tried a leonardo I see nothing happening on my system.
After I disconnected my duemilenove's and connected my leonardo dmesg tells me

Code:

bash-4.1$ dmesg | tail
FIREWALL: IN=eth0 OUT= MAC=00:26:2d:ff:c8:5c:11:00:06:8b:05:d6:08:00 SRC=23.62.99.19 DST=192.168.1.2 LEN=1492 TOS=0x00 PREC=0x00 TTL=57 ID=31953 DF PROTO=TCP SPT=80 DPT=41427 WINDOW=7776 RES=0x00 ACK URGP=0
FIREWALL: IN=eth0 OUT= MAC=00:26:2d:ff:c8:5c:11:00:06:8b:05:d6:08:00 SRC=23.62.99.19 DST=192.168.1.2 LEN=1492 TOS=0x00 PREC=0x00 TTL=57 ID=35062 DF PROTO=TCP SPT=80 DPT=41427 WINDOW=7776 RES=0x00 ACK URGP=0
FIREWALL: IN=tun0 OUT= MAC= SRC=9.64.162.21 DST=9.145.143.168 LEN=206 TOS=0x08 PREC=0x60 TTL=60 ID=22566 PROTO=UDP SPT=53 DPT=53904 LEN=186
usb 2-1.2: USB disconnect, device number 15
ftdi_sio ttyUSB2: FTDI USB Serial Device converter now disconnected from ttyUSB2
ftdi_sio 2-1.2:1.0: device disconnected
usb 1-1.1: USB disconnect, device number 21
ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
ftdi_sio 1-1.1:1.0: device disconnected
usb 2-1.1: USB disconnect, device number 14
bash-4.1$

I disconnected and reconnected it again and the dump above is from the second command. (note that the fact that the 14 gives a little different message is probably caused by the fact this one was connected to my vm)

When I look up information on getting leonardo work on Linux I find "Thee is nothing to do. I just works"
I have no clue where to go and look for problem solving. I tried nearly all commands on http://playground.arduino.cc//Linux/Fedora but nothing helped.

Hopefully someone can help me

I tired with a 3th duemilenove board and 2 of them work and 1 doesn't.
It is kind of wierd because I can get the "bad board" to work in my xp VM.

Hi
I have 2 duemilenova's attached to my Linux redhat enterprise edition 6.
When I start the Arduino IDE (I tried 1.03; 1.5.2 and 1.5.3 all behave the same) as standard user (jan) I only see 1 usb port. I verified and it is always the same Arduino that works.
I tried the "bad Arduino" on windows xp where I had no issues.
I tried as root and both Arduino's work fine.
I'm new to Linux and a desktop platform but my bet is that there is some configuration issue.
I've tried what I could find but I still have no clue what could be wrong.
All commands below have been executed as jan (so not root).
After disconnecting and reconnecting I see the following in dmesg

Code:

bash-4.1$ dmesg | tail -30
ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
ftdi_sio 1-1.1:1.0: device disconnected
usb 1-1.1: new full speed USB device number 14 using ehci_hcd
usb 1-1.1: New USB device found, idVendor=0403, idProduct=6001
usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1.1: Product: FT232R USB UART
usb 1-1.1: Manufacturer: FTDI
usb 1-1.1: SerialNumber: A9007TX5
usb 1-1.1: configuration #1 chosen from 1 choice
ftdi_sio 1-1.1:1.0: FTDI USB Serial Device converter detected
usb 1-1.1: Detected FT232RL
usb 1-1.1: Number of endpoints 2
usb 1-1.1: Endpoint 1 MaxPacketSize 64
usb 1-1.1: Endpoint 2 MaxPacketSize 64
usb 1-1.1: Setting MaxPacketSize 64
usb 1-1.1: FTDI USB Serial Device converter now attached to ttyUSB0
usb 2-1.2: new full speed USB device number 7 using ehci_hcd
usb 2-1.2: New USB device found, idVendor=0403, idProduct=6001
usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 2-1.2: Product: FT232R USB UART
usb 2-1.2: Manufacturer: FTDI
usb 2-1.2: SerialNumber: A8008Izj
usb 2-1.2: configuration #1 chosen from 1 choice
ftdi_sio 2-1.2:1.0: FTDI USB Serial Device converter detected
usb 2-1.2: Detected FT232RL
usb 2-1.2: Number of endpoints 2
usb 2-1.2: Endpoint 1 MaxPacketSize 64
usb 2-1.2: Endpoint 2 MaxPacketSize 64
usb 2-1.2: Setting MaxPacketSize 64
usb 2-1.2: FTDI USB Serial Device converter now attached to ttyUSB1

lsusb reports both boards

Code:

bash-4.1$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 011: ID 0a5c:217f Broadcom Corp. Bluetooth Controller
Bus 001 Device 013: ID 04b3:310c IBM Corp. Wheel Mouse
Bus 001 Device 006: ID 17ef:480f Lenovo Integrated Webcam [R5U877]
Bus 001 Device 014: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC
Bus 002 Device 007: ID 0403:6001 Future Technology Devices International, Ltd FT232 USB-Serial (UART) IC
bash-4.1$

only /dev/ttyUSB0 is visible in arduino

Code:

bash-4.1$ ls -l /dev/ttyU*
crw-rw-rw-. 1 root dialout 188, 0 Feb 27 16:17 /dev/ttyUSB0
crw-rw-rw-. 1 root dialout 188, 1 Feb 27 16:17 /dev/ttyUSB1
bash-4.1$

The only difference I see is the 0 and 1 before Feb for which I have no clue what it means. I found nothing in the man pages and when looking on google on what this value stands for.
executed as root I get he same result (except for the names having a black background)

Code:

[root@oc3604553758 jan]# ls -l /dev/ttyU*
crw-rw-rw-. 1 root dialout 188, 0 Feb 27 16:17 /dev/ttyUSB0
crw-rw-rw-. 1 root dialout 188, 1 Feb 27 16:17 /dev/ttyUSB1
[root@oc3604553758 jan]#

As I belong to the dialout group this should be fine

Code:

bash-4.1$ groups
jan uucp dialout lock desktop_admin_r
bash-4.1$

Anyone has a clue what is wrong?
NewLinuxUser