HP Probook 450 usb ehci breaks between 3.13.0-36 and 3.13.0-37
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Low
|
Unassigned |
Bug Description
Release: Ubuntu 14.04.2 LTS
Package version: linux-image-
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:/
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
All the new kernel updates still suffer from same problem, I have to hold back kernel to 3.13.0-36
think its related to
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1072918
and
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux-lts- trusty/ +bug/1454108
and
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1133670
If it worked perfectly in 3.13.0-36, what change was made in 37 that breaks it?
There is no linux firmware updater software on HP site, and I do not wish to
install windows just to do a hp firmware flash if its some changes in linux kernel
that is causing the problem.