[Asus X750LN] Touchpad not recognized

Bug #1342561 reported by verion GmbH on 2014-07-16
This bug affects 6 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

The touchpad is not recognized. Either of the following do not provide a work around:
i8042.noaux i8042.reset

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-24-generic 3.13.0-24.46
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
 /dev/snd/controlC1: ubuntu 3866 F.... pulseaudio
 /dev/snd/controlC0: ubuntu 3866 F.... pulseaudio
CasperVersion: 1.340
CurrentDesktop: Unity
Date: Wed Jul 16 06:59:29 2014
LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
 PATH=(custom, no user)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: file=/preseed/username.seed boot=casper persistent initrd=/casper/initrd.lz quiet splash -- debian-installer/language=de keyboard-configuration/layoutcode?=de
 linux-restricted-modules-3.13.0-24-generic N/A
 linux-backports-modules-3.13.0-24-generic N/A
 linux-firmware 1.127
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/01/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 202
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.:bvr202:bd04/01/2014: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.

verion GmbH (sales-ixsoft) wrote :

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
description: updated

verion GmbH, could you please test the latest upstream kernel available from the very top line at the top of the page (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:

where VERSION-NUMBER is the version number of the kernel you tested. For example:

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:

If the mainline kernel does not fix this bug, please add the following tags:

As well, please remove the tag:

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.

summary: - Touchpad not recognized + Fn Keys not working (ACPI errors)
+ [Asus X750LN] Touchpad not recognized
description: updated
Changed in linux (Ubuntu):
importance: Undecided → High
status: Confirmed → Incomplete
Robert Hrovat (robi-hipnos) wrote :

Just bought this laptop yesterday.

Trying the latest of 3.13: 3.13.11-03131106-generic
It does not work.

Robert Hrovat (robi-hipnos) wrote :

And the same with 3.14.1-031401-generic.

is there anything else I could do for a test?

tags: added: kernel-bug-exists-upstream-3.13.11-03131106-generic kernel-bug-exists-upstream-3.14.1-031401-generic

Robert Hrovat, thank you for your comment. So your hardware and problem may be tracked, could you please file a new report with Ubuntu by executing the following in a terminal while booted into the default Ubuntu kernel (not a mainline one) via:
ubuntu-bug linux

For more on this, please read the official Ubuntu documentation:
Ubuntu Bug Control and Ubuntu Bug Squad: https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue
Ubuntu Kernel Team: https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports
Ubuntu Community: https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette

When opening up the new report, please feel free to subscribe me to it.

As well, please do not announce in this report you created a new bug report.

Thank you for your understanding.

Helpful bug reporting tips:

tags: removed: kernel-bug-exists-upstream-3.13.11-03131106-generic kernel-bug-exists-upstream-3.14.1-031401-generic
verion GmbH (sales-ixsoft) wrote :


tags: added: kernel-bug-exists-upstream-3.16.2-031602-generic kernel-bug-exists-upstream-3.17.0-031700rc5-generic
tags: added: kernel-bug-exists-upstream

verion GmbH, the issue you are reporting is an upstream one. Could you please report this problem through the appropriate channel by following the instructions _verbatim_ at https://wiki.ubuntu.com/Bugs/Upstream/kernel ?

Please provide a direct URL to your e-mail to the mailing list once you have made it so that it may be tracked.

Thank you for your understanding.

tags: added: kernel-bug-exists-upstream-3.17-rc5
removed: kernel-bug-exists-upstream-3.16.2-031602-generic kernel-bug-exists-upstream-3.17.0-031700rc5-generic
tags: added: latest-bios-201
Changed in linux (Ubuntu):
status: Incomplete → Triaged
bg (boterog) wrote :

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


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

Pilot6 (hanipouspilot) wrote :

I backported upstream patch for kernel 3.16.
Please test if this works for X750LN

Debs are here https://www.dropbox.com/sh/07642x3lziqgmz9/AACGWNO5_lNnX7x7tYMoH9gka?dl=0

tags: added: patch
Andres (4izen5ama) wrote :

Good Afternoon!

I'm Andrés
I'm from Colombia, and a Linux Mint 17.3 (trusty) user.

I have been struggled with a basic problem: My touchpad was recognized as a PS/2 Optical Wheel Mouse, I have an Asus K550D Laptop, and with the bg help.

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"

Thank u very much!
I can now use my touchpad without problems.

I hope this can help to others!

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