Hi Robert, Thank you for the suggestions!
Unfortunately updating the kernel did not fix the issue- pretty much the same backtraces. I was thinking along the lines of getting a powered USB hub as well. Interestingly, on the failed case, removing the USB audio card, then performing a warm reset is not enough- I must cold boot for wlcore to come up successfully again. I will track down a powered hub and report back. Regards, Mike On Wednesday, July 20, 2016 at 2:09:35 PM UTC-5, RobertCNelson wrote: > > Hi Mike > > On Wed, Jul 20, 2016 at 2:03 PM, Mike Erdahl <[email protected] > <javascript:>> wrote: > >> Hi, >> >> I'm working on a project that requires audio input/ output, so using a >> C-Media chipset based solution from Sabrent. >> >> With the latest BB.org kernel/ filesystem (Kernel 4.4.9, Debian 8.4), >> wlcore driver crashes during kernel boot if my USB audio card is >> installed. Booting without the card installed, then installing after the >> kernel seems to always work fine (WiFi throughput is normal, USB audio in/ >> out works as expected). >> >> Occasionally I can poweroff, then back on, without removing USB audio >> card, and wlcore is happy. I would say this occurs < 10%. >> >> Below are snippets of my kernel logs in good vs bad case: >> >> debian@beaglebone:~$ uname -a >> >> >> > Linux beaglebone 4.4.9-ti-r25 #1 SMP Thu May 5 23:08:13 UTC 2016 armv7l >> GNU/Linux >> > > Can you please re-test with 4.4.15-ti-r37 > > sudo apt-get update ; sudo apt-get install linux-image-4.4.15-ti-r37 ; > sudo reboot > > Otherwise it smells like a power issue. > > A quick test, if you can put a "powered" usb hub between the Green > Wireless and your usb audio card. > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ > -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/49a87b51-5c3c-40a0-bf41-0bc47563c5f4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
