[Asus X750LN] Touchpad does not work

[Robert Hrovat]

The Touchpad on my Asus X750 does not work.

WORKAROUND: Find the line that mentions GRUB_CMDLINE_LINUX and add the flag:
sudo nano /etc/default/grub
GRUB_CMDLINE_LINUX="i8042.noloop=1 psmouse.proto=bare"

Then save the file, run a grub update, and restart:
sudo grub-update

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-35-generic 3.13.0-35.62
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: robi 2233 F.... pulseaudio
 /dev/snd/controlC1: robi 2233 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Sep 12 14:59:27 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-09-11 (0 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: ASUSTeK COMPUTER INC. X750LN
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic.efi.signed root=UUID=018f7ea0-cad8-4ce9-a42b-233cc2020b0e ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-35-generic N/A
 linux-backports-modules-3.13.0-35-generic N/A
 linux-firmware 1.127.5
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/19/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 201
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X750LN
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr201:bd02/19/2014:svnASUSTeKCOMPUTERINC.:pnX750LN:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX750LN:rvr1.0:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: X750LN
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.17 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-rc4-utopic/

[Robert Hrovat (robi-hipnos)]

Joseph, trying 3.17.0-031700rc4-generic and it still does not work.

[bg (boterog)]

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1342561

I found a workaround which should make the touchpad work in ps/2 mouse emulation mode.

https://bugzilla.redhat.com/show_bug.cgi?id=1110011

You need to add a Kernel Boot Parameter to set the flag i8042.nomux=1 psmouse.proto=bare
which will enable PS/2 Mouse Emulation mode on your touchpad.

Edit your default grub file.

sudo nano /etc/default/grub

Find the line that mentions GRUB_CMDLINE_LINUX and add the flag:

GRUB_CMDLINE_LINUX="i8042.noloop=1 psmouse.proto=bare"

Then save the file and run a grub update.

sudo grub-update

Then restart the system .

product: X750LN
Linux version 3.13.0-36-generic

Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty

[Robert Hrovat (robi-hipnos)]

Thanks bg. This actually works, so I don't need to test latest kernel?

[penalvch (penalvch)]

Robert Hrovat, that is a WORKAROUND, not a fix. If you want a fix, you would need to test the latest kernel (3.17).

[Robert Hrovat (robi-hipnos)]

With current HWE and kernel 3.16 there is no need for this workaround. Altough it just works without gestures, multi touch or any other advanced features. There is also no settings for TP, for example, disable touchpad while typing.

[penalvch (penalvch)]

Robert Hrovat, would you need a backport to a release prior to Utopic, or may this be closed as Status Invalid?

[Robert Hrovat (robi-hipnos)]

I guess this could be closed. Since there is HWE for LTS versions there is no need to make backport releases.

[penalvch (penalvch)]

Robert Hrovat, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1368761/comments/8 regarding this being fixed with an update. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.