You have been subscribed to a public bug: Release: Ubuntu 14.04.2 LTS Package version: linux-image-3.13.0-37-generic What expect to happen: USB to work after boot-up Whap happened instead: dead USB, no dmesg messages when unplugging or plugging in USB devices.
HP Probook 450 USB support got broken since 3.13.0-37. Ubuntu 14.04.2 LTS Similar but not identical to problems as described in https://bugs.launchpad.net/bugs/1072918. All USB ports dead. dmesg shows ehci_hcd died. cleaning up. By passing extra kernel parameters using grub menu: ehci=noirq (or was that acpi=noirq) makes it work but that breaks onboard ethernet. also tried with tried iommu=soft (didn't work) Tried all kernel images from 3.13.0-37 to 3.13.0-52 .. all the same result: broken USB. had to back-step to 3.13.0-36 ... Just thought I'd mention, that might affect other HP Probook models as well. kernel modules affected: xhci_hcd, hid_generic, usbhid, ehci ** Affects: linux (Ubuntu) Importance: Undecided Status: Incomplete ** Tags: ehci hp probook usb -- HP Probook 450 usb ehci breaks between 3.13.0-36 and 3.13.0-37 https://bugs.launchpad.net/bugs/1454108 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
