Public bug reported:
After the recent upgrade to the 3.13.0-34 kernel the touchpad on the HP
Chromebook 14 with Ubuntu 14.04 installed via chrubuntu no longer works.
By booting up with the previous version of the kernel which is
3.13.0-32, the touch pad works fine.
$ lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04
With version 3.13.0-32 lshw returns the following for the serial ports:
*-serial:0
description: Serial bus controller
product: Lynx Point-LP I2C Controller #0
vendor: Intel Corporation
physical id: 15.1
bus info: pci@0000:00:15.1
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=i2c-designware-pci latency=0
resources: irq:21 memory:e051a000-e051afff memory:e051b000-e051bfff
*-serial:1
description: Serial bus controller
product: Lynx Point-LP I2C Controller #1
vendor: Intel Corporation
physical id: 15.2
bus info: pci@0000:00:15.2
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=i2c-designware-pci latency=0
resources: irq:21 memory:e051c000-e051cfff memory:e051d000-e051dfff
whereas with 3.13.0-34 it returns:
*-serial:0 UNCLAIMED
description: Serial bus controller
product: Lynx Point-LP I2C Controller #0
vendor: Intel Corporation
physical id: 15.1
bus info: pci@0000:00:15.1
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: latency=0
resources: memory:e051a000-e051afff memory:e051b000-e051bfff
*-serial:1 UNCLAIMED
description: Serial bus controller
product: Lynx Point-LP I2C Controller #1
vendor: Intel Corporation
physical id: 15.2
bus info: pci@0000:00:15.2
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: latency=0
resources: memory:e051c000-e051cfff memory:e051d000-e051dfff
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "version.log"
https://bugs.launchpad.net/bugs/1359997/+attachment/4184110/+files/version.log
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https://bugs.launchpad.net/bugs/1359997
Title:
Touchpad of HP Chromebook 14 no longer works with latest kernel
Status in “linux” package in Ubuntu:
New
Bug description:
After the recent upgrade to the 3.13.0-34 kernel the touchpad on the
HP Chromebook 14 with Ubuntu 14.04 installed via chrubuntu no longer
works. By booting up with the previous version of the kernel which is
3.13.0-32, the touch pad works fine.
$ lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04
With version 3.13.0-32 lshw returns the following for the serial ports:
*-serial:0
description: Serial bus controller
product: Lynx Point-LP I2C Controller #0
vendor: Intel Corporation
physical id: 15.1
bus info: pci@0000:00:15.1
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=i2c-designware-pci latency=0
resources: irq:21 memory:e051a000-e051afff
memory:e051b000-e051bfff
*-serial:1
description: Serial bus controller
product: Lynx Point-LP I2C Controller #1
vendor: Intel Corporation
physical id: 15.2
bus info: pci@0000:00:15.2
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: driver=i2c-designware-pci latency=0
resources: irq:21 memory:e051c000-e051cfff
memory:e051d000-e051dfff
whereas with 3.13.0-34 it returns:
*-serial:0 UNCLAIMED
description: Serial bus controller
product: Lynx Point-LP I2C Controller #0
vendor: Intel Corporation
physical id: 15.1
bus info: pci@0000:00:15.1
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: latency=0
resources: memory:e051a000-e051afff memory:e051b000-e051bfff
*-serial:1 UNCLAIMED
description: Serial bus controller
product: Lynx Point-LP I2C Controller #1
vendor: Intel Corporation
physical id: 15.2
bus info: pci@0000:00:15.2
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: latency=0
resources: memory:e051c000-e051cfff memory:e051d000-e051dfff
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