lcox
August 13th, 2008, 10:04 PM
FYI - I live in Monument, CO and thought I'd ask this question more "locally" instead of globally.
I have an Ubuntu 64 bit Hardy running in a VM on Fusion on my Mac. I also have 6 identical FTDI based USB devices I want to attach and talk to them.
If I attach the first device, after a bit I see a /dev/ttyUSB0 show up and the appropriate log messages showing a connection appear in the /var/log/messages. So far, so good.
When I attach the 2nd device, I never see another /dev/tty-anything show up. If I disconnect the first device, and reconnect the 2nd device, the 2nd device now shows up as /dev/ttyUSB0.
It acts like it can only recognize one of these devices at a time.
When I connect the 2nd device, there are no log messages in /var/log/messages on a physical connect or disconnect.
I've also tried another approach which is to connect the devices when the VM is not active, so the devices are recognized by Mac OS X and show up as:
tty.usbserial-A9003PjA
tty.usbserial-A9003Plt
Back in the Fusion VM, the VM Settings dialog will list two Future Devices USB devices and I can enable them and connect them. But the same thing happens. As soon as I enable/connect the first one through the Settings dialog of the VM, I see a /dev/ttyUSB0 show up but when I connect the 2nd one, nothing happens.
Any clues about why Ubuntu is not enumerating more than one of these FTDI devices? (And I do not see any brltty errors and just in case, I did an apt-get remove brltty, so it's not in the picture anyway.)
I have an Ubuntu 64 bit Hardy running in a VM on Fusion on my Mac. I also have 6 identical FTDI based USB devices I want to attach and talk to them.
If I attach the first device, after a bit I see a /dev/ttyUSB0 show up and the appropriate log messages showing a connection appear in the /var/log/messages. So far, so good.
When I attach the 2nd device, I never see another /dev/tty-anything show up. If I disconnect the first device, and reconnect the 2nd device, the 2nd device now shows up as /dev/ttyUSB0.
It acts like it can only recognize one of these devices at a time.
When I connect the 2nd device, there are no log messages in /var/log/messages on a physical connect or disconnect.
I've also tried another approach which is to connect the devices when the VM is not active, so the devices are recognized by Mac OS X and show up as:
tty.usbserial-A9003PjA
tty.usbserial-A9003Plt
Back in the Fusion VM, the VM Settings dialog will list two Future Devices USB devices and I can enable them and connect them. But the same thing happens. As soon as I enable/connect the first one through the Settings dialog of the VM, I see a /dev/ttyUSB0 show up but when I connect the 2nd one, nothing happens.
Any clues about why Ubuntu is not enumerating more than one of these FTDI devices? (And I do not see any brltty errors and just in case, I did an apt-get remove brltty, so it's not in the picture anyway.)