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[Bug 1534856] Re: lsusb hangs
[Expired for linux (Ubuntu) because there has been no activity for 60
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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Status in linux package in Ubuntu:
When plugging an external sound card into USB3 ports on my ASUSTeK
P9X79 motherboard, lsusb hangs and the usb device no longer works. If
I plug the sound card into a USB2 port, lsusb does not hang but the
device is not detected and there are 0 messages printed in dmesg.
bash$ strace lsusb -v
munmap(0x7fa344ff3000, 4096) = 0
open("/sys/bus/usb/devices/usb3/descriptors", O_RDONLY) = 6
It hangs on this read and Ctrl-C cannot kill it until I unplug the usb
This device was working until maybe 1-2 months ago, I believe when
signed UEFI kernels started getting pushed to LTS although that is
just a guess on my part. I've tried falling back but I can't find a
kernel that works anymore.
bash$ uname -a
bash$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.3 LTS
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