Have you seen any issues with a specific type of USB device? I have had good luck with the Alfa wireless adapters, but have seen issues with some other adapters. YMMV.
On Fri, Nov 8, 2013 at 12:51 PM, <[email protected]> wrote: > We have seen similar issues with USB devices on the BBB and are pretty > mystified. We suspect a low-level bug in the USB drivers. > Did you ever get a good resolution? > > BTW, on the HDMI console you will probably not see kernel panic messages- > they are usually brought out only on the serial header, for which you will > need a 3.3V USB/serial FTDI adapter. > We also see lots of warnings and USB connect/disconnects in the system > logs. > > > > > On Saturday, November 2, 2013 6:30:44 AM UTC-7, [email protected] wrote: >> >> Hi all >> >> New here, but I've been experimenting with the BeagleBone black for a few >> months now with much success - I2C, SPI, ADC, GPIO, UARTS are all working >> for me, and I have a my custom cape wining it's way from the fab to me as I >> type. But now I'm trying to integrate it with the USB peripherals I'll need >> and I am getting constant freezes. >> >> My setup. I have a good power supply (3A 5V) connected via the barrel >> connector. I have a powered USB hub from a reputable manufacturer and which >> also has a 3A supply. In that hub I have a bluetooth dongle, an Atheros 9K >> based Wifi dongle, and a Huawei E3131 3G modem. There's also an ethernet >> connection. I'm running a system derived from the Ubuntu self-installer on >> eLinux.org (ie that plus updates and a few additional packages) with >> the 3.8.13-bone28 kernel. >> >> The symptoms are after a variable number of hours the device hangs. The >> heartbeat LED stops and it drops off the network. I'm normally running with >> HDMI disabled but when I enable it I see nothing on the screen except the >> console login - no panic message, although when it's hung the cursor stops >> blinking. I have to power cycle it and when it comes back there is nothing >> in the logs. >> >> So I haven't got much to work from here. I had loads of issues with >> another Wifi card so switched to one with the atheros chipset, but I still >> suspect it's the USB subsystem causing the problems as I had no issues >> until I started plugging in devices (plus the hotplug doesn't seem to work >> reliably under 3.8.13). >> >> So I guess my questions are: >> >> 1. Does anyone have any suggestions - I gather a few people have been >> here before me. >> >> 2. Is there any way I can get some logs out of this? I've been running >> LInux for 20 years but am new to embedded, and I find a crash with no panic >> message quite disconcerting! >> >> 3. Is it likely to be hardware or software causing this? The beaglebone >> black is about 3 months old, so I think it's the latest revision. >> >> 4. At this point I guess my next option is upgrading to the EXPERIMENTAL >> or TESTING kernels from Robert Nelson (at 3.12.0-rc3 and rc7 respectively >> at the moment) - has anyone tried these, and are they fit for purpose? >> >> Thanks in advance. >> >> >> Cheers... Mike >> >> -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
