I just unpacked my new beagleboard-xm and after booting it shows these
strange error messages in the log files and on the console:
[ 1093.992553] mmc0: new high speed SDHC card at address 1234
[ 1094.002319] mmcblk0: mmc0:1234 SA04G 3.68 GiB
[ 1094.007202] mmcblk0: p1 p2
[ 1094.086730] usb 2-2.1: new high speed USB device using ehci-omap
and address 3
[ 1094.221374] usb 2-2.1: New USB device found, idVendor=0424,
idProduct=ec00
[ 1094.234710] usb 2-2.1: New USB device strings: Mfr=0, Product=0,
SerialNumber=0
[ 1094.252899] smsc95xx v1.0.4
[ 1094.348205] usb0: register 'smsc95xx' at usb-ehci-omap.0-2.1,
smsc95xx USB 2.0 Ethernet, 26:bf:36:a2:b1:4e
[ 1094.375488] hub 2-2:1.0: over-current change on port 3
[ 1094.500762] hub 2-2:1.0: over-current change on port 3
[ 1094.703155] hub 2-2:1.0: over-current change on port 3
[ 1094.958923] hub 2-2:1.0: over-current change on port 3
[ 1095.215087] hub 2-2:1.0: over-current change on port 3
...
I started checking the host usb with my thumb drive and ports 1 and 2
are not working at all. The network interface shows up with ifconfig
but i had no cable to check if it's really working...
Has anyone seen these error messages before or is it maybe a defect
board?
I have just come across a similar issue with my Beagleboard-xM. In
general reading about the error message, people seemed to point to
damage to the usb hub, namely some kind of short, as the cause. If
this were the case do you think swapping the USB ports themselves
would solve the problem?
It sounds like the power FET may be damaged. It is odd that there are two cases reporting port 3 as the bad port. This can occur if you have plugged in a power supply that is over the 5V rating and damaging the power FET. Either way, an RMA is needed to get it repaired.
We have 4 xm (Rev A2) boards and they are pretty much all displaying
this strange behavior. I have them setup to nfs mount our rootfs and
have to hit reset a whole bunch of times before usb0 actually comes
up. We get "IP-Config: No network devices available" quite often. I
checked my power supply and it is putting out 5.20v DC. I'll switch
to powering via OTG connector and see if that makes a difference.
We have 4 xm (Rev A2) boards and they are pretty much all displaying
this strange behavior. I have them setup to nfs mount our rootfs and
have to hit reset a whole bunch of times before usb0 actually comes
up. We get "IP-Config: No network devices available" quite often. I
checked my power supply and it is putting out 5.20v DC. I'll switch
to powering via OTG connector and see if that makes a difference.
i get this network failing to come up sometimes too. i'm booting fedora but its
the angstrom 2.6.32 kernel that was shipped with the board last month.
using tcpdump i see that the bb asks for dhcp and my host says it sends
dhcp info back but the bb just keeps asking. so the hardware works
in at least one direction...
We received 20 non-xm boards (Rev C4) from Mouser a few days ago. Out of the twenty boards, two cannot supply enough current to the Trendnet TU2-ET100 USB-Ethernet dongle. They have similar symptom as Brian's xm boards. One board has problem with the USB connectors. When I wiggle the connector, the connectors may get back their connection. One has the USB connector does not provide power to the target device. One worked for a day and died.
The Trendnet TU2-ET100 needs 850 mW power. I don't think I'd use it on a revision C3 or C4 myself. And yes, I have a C4 + an xM. My solution for the C4 was a Zippy board. Works wonderfully.
Hi Bob,
I power the Beagleboard on my desk with a 3.2A regulated power supply. I have been using this power supply to test more than 80 Beagleboards since last year. So, I am sure that this power supply can provide ample current to a Beagleboard with a TU2-ET100. If you read the Beagleboard Rev-C3 schematic, you will see the DC 5V from an external power supply will drive the TPS2601 directly. I do not see any reason that a Rev-C Beagleboard cannot provide enough power to TU2-ET100 even if it takes up to 850mV (less than 200mA at 5V); as long as I have enough power for my system. I also bought a Zippy board last year. But, I have never used it. I just need to find out the bi-directional buffers it uses for the mmc slot. The Ethernet chip the Zippy board use is SPI type. It is slow. Not for me.
I am still waiting for another 20 Beagleboard Rev-C4 to arrive. And, I have 3 -xm boards on hand.
Regards,
-Eric