kernel oops during usb usage

[ctr49]

I want to use my BBB as console server using conserver. To get the serial port density I've got a 16port USB-serial adapter using FTDI FT4232H. The adapter itself works fine (also with a RPI) but when using it on BBB/Ubuntu (latest image, running 3.8.13-bone21) it crashed on USB usage.

Already tried with USB-powered and external (2,5A) power supply. The USB-serial adapter itself has a seperate 12V power supply anyway.

With the other 2 USB related issues here I think there is pattern of USB-related problems...

[RobertCNelson]

Please upgrade to at-least upgrade to the latest:

wget http://rcn-ee.net/deb/raring-armhf/v3.8.13-bone22/install-me.sh sudo /bin/bash install-me.sh

PS: the usb bus is still 'very' fragile... It's a big hack to make it work on v3.8.x, should have something newer to test around v3.11-rc1...

Regards,

[ctr49]

It still locks up, there are just different levels of information available. Either none, above Oops or sometimes "Unable handle kernel null pointer dereference at virtual address 00000011" The strange part is that if I leave the usb device attached the device just goes dead (i.e. no ping reply), if I plug the device right after it breaks it comes back for about 10 seconds (this is the only time when I actually see an Oops or null pointer error) just to die then.

[ctr49]

Just a note, I'm having the same problem on Angstrom, not sure if it uses the same kernel, but version number indicates it does.

Is there any stable/fallback kernel available that has solid USB support?

[ctr49]

Are there any updates to this issue? USB is completely unusable for me due to above issue. Are there any newer or older version I could use to get stable usb2serial?

Thanks!