The touchpad which was working normally stopped working after updating my ubuntu 12.04 LTS.

[siddharth varia]

My laptop is Lenovo Ideapad y470. I have attached output of dmesg command. Below are the contents of /proc/bus/input/devices

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=PNP0C0C/button/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:02/PNP0C0C:00/input/input0
U: Uniq=
H: Handlers=kbd event0
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0019 Vendor=0000 Product=0003 Version=0000
N: Name="Sleep Button"
P: Phys=PNP0C0E/button/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:02/PNP0C0E:00/input/input1
U: Uniq=
H: Handlers=kbd event1
B: PROP=0
B: EV=3
B: KEY=4000 0 0

I: Bus=0019 Vendor=0000 Product=0005 Version=0000
N: Name="Lid Switch"
P: Phys=PNP0C0D/button/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input2
U: Uniq=
H: Handlers=event2
B: PROP=0
B: EV=21
B: SW=1

I: Bus=0019 Vendor=0000 Product=0001 Version=0000
N: Name="Power Button"
P: Phys=LNXPWRBN/button/input0
S: Sysfs=/devices/LNXSYSTM:00/LNXPWRBN:00/input/input3
U: Uniq=
H: Handlers=kbd event3
B: PROP=0
B: EV=3
B: KEY=10000000000000 0

I: Bus=0011 Vendor=0001 Product=0001 Version=ab41
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input4
U: Uniq=
H: Handlers=sysrq kbd event4
B: PROP=0
B: EV=120013
B: KEY=a0000702100000 83803078f800d001 feffffdfffefffff fffffffffffffffe
B: MSC=10
B: LED=7

I: Bus=0003 Vendor=046d Product=c52b Version=0111
N: Name="Logitech Unifying Device. Wireless PID:400a"
P: Phys=usb-0000:00:1d.0-1.2:1
S: Sysfs=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.2/0003:046D:C52B.0003/input/input6
U: Uniq=
H: Handlers=mouse0 event5
B: PROP=0
B: EV=17
B: KEY=ffff0000 0 0 0 0
B: REL=143
B: MSC=10

I: Bus=0019 Vendor=0000 Product=0000 Version=0000
N: Name="Ideapad extra buttons"
P: Phys=ideapad/input0
S: Sysfs=/devices/platform/VPC2004:00/input/input7
U: Uniq=
H: Handlers=rfkill kbd event6
B: PROP=0
B: EV=13
B: KEY=1400800100c03 400000000300000 0 0
B: MSC=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH HDMI/DP,pcm=3"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input11
U: Uniq=
H: Handlers=event7
B: PROP=0
B: EV=21
B: SW=140

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Headphone"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input10
U: Uniq=
H: Handlers=event8
B: PROP=0
B: EV=21
B: SW=4

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="HDA Intel PCH Mic"
P: Phys=ALSA
S: Sysfs=/devices/pci0000:00/0000:00:1b.0/sound/card0/input9
U: Uniq=
H: Handlers=event9
B: PROP=0
B: EV=21
B: SW=10

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:2f/LNXVIDEO:00/input/input12
U: Uniq=
H: Handlers=kbd event10
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0019 Vendor=0000 Product=0006 Version=0000
N: Name="Video Bus"
P: Phys=LNXVIDEO/video/input0
S: Sysfs=/devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:01/input/input13
U: Uniq=
H: Handlers=kbd event11
B: PROP=0
B: EV=3
B: KEY=3e000b00000000 0 0 0

I: Bus=0003 Vendor=0bda Product=58e6 Version=2606
N: Name="Lenovo EasyCamera"
P: Phys=usb-0000:00:1d.0-1.6/button
S: Sysfs=/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.6/2-1.6:1.0/input/input14
U: Uniq=
H: Handlers=kbd event12
B: PROP=0
B: EV=3
B: KEY=100000 0 0 0

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.13.0-37-generic 3.13.0-37.64~precise1
ProcVersionSignature: Ubuntu 3.13.0-37.64~precise1-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-37-generic.
ApportVersion: 2.0.1-0ubuntu17.7
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: siddharth 2041 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xf1c00000 irq 52'
   Mixer name : 'Intel CougarPoint HDMI'
   Components : 'HDA:10ec0272,17aac016,00100001 HDA:80862805,80860101,00100000'
   Controls : 35
   Simple ctrls : 12
Date: Tue Oct 14 22:26:11 2014
HibernationDevice: RESUME=UUID=20933cdf-4358-4509-8528-7e1a27013e8f
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
MachineType: LENOVO 0855
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB:
 0 inteldrmfb
 1 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-37-generic root=UUID=a0529463-182e-4ab1-8f34-0b218aaec744 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-37-generic N/A
 linux-backports-modules-3.13.0-37-generic N/A
 linux-firmware 1.79.18
SourcePackage: linux-lts-trusty
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog: Oct 14 22:22:33 siddharth-Laptop kernel: [ 3734.433268] type=1400 audit(1413339753.744:83): apparmor="DENIED" operation="capable" profile="/usr/sbin/cupsd" pid=4271 comm="cupsd" capability=36 capname="block_suspend"
dmi.bios.date: 06/14/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 47CN28WW(V2.06)
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: LENOVO
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnLENOVO:bvr47CN28WW(V2.06):bd06/14/2011:svnLENOVO:pn0855:pvrLenovoIdeaPadY470:rvnLENOVO:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: 0855
dmi.product.version: Lenovo IdeaPad Y470
dmi.sys.vendor: LENOVO

[penalvch (penalvch)]

siddharth varia, thank you for reporting this and helping make Ubuntu better.

At your earliest convenience, could you please test the latest upstream kernel available from the very top line at the top of the page from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D (the release names are irrelevant for testing, and please do not test the daily folder)? Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . This will allow additional upstream developers to examine the issue.

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.

[Launchpad Janitor (janitor)]

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