Sam Shepperd, I'm not sure how being rude and attacking folks who have knowledge about the linux kernel is going to motivate anyone to want to help you, let alone fix your problem.
Despite this, in order to allow additional upstream developers to examine the issue, at your earliest convenience, could you please test the latest upstream kernel available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please keep in mind the following: 1) The one to test is at the very top line at the top of the page (not the daily folder). 2) The release names are irrelevant. 3) The folder time stamps aren't indicative of when the kernel actually was released upstream. 4) Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . If testing on your main install would be inconvenient, one may: 1) Install Ubuntu to a different partition and then test this there. 2) Backup, or clone the primary install. If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where X, and Y are the first two numbers of the kernel version, and Z is the release candidate number if it exists. If the mainline kernel does not fix the issue, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream. Once testing of the latest upstream kernel is complete, please mark this report's Status as Confirmed. Please let us know your results. Thank you for your understanding. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1534856 Title: lsusb hangs Status in linux package in Ubuntu: Incomplete Bug description: 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 read(6, It hangs on this read and Ctrl-C cannot kill it until I unplug the usb device. 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 3.13.0-74-generic x86_64 bash$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.3 LTS Release: 14.04 Codename: trusty To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1534856/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
