[Asus X750LN] Touchpad not recognized

[Nikola Nikolov]

Laptop model: Asus K750 series.
Exact model number: K750LN-T4155
The symptom started: Since first run

I just bought a new laptop( the full model # on the box is K750LN-T4155 if that matters ) and since booting into Ubuntu through the Live USB the touchpad wasn't working at all. I've installed Ubuntu anyway(since I usually have an external mouse) and looked for any updates that would make it work, but found none.

I don't know who's the manufacturer of the touchpad, since it's not specified anywhere - neither online(a search yields very little results for that particular model), in any of the documents/manuals I got about it and since it's not recognized by the OS, I have nowhere else to look.

Due to another issue with the same laptop(the fn keys not working), I tried running one of the latest versions of the Linux kernel, namely: 3.16.3-031603.201409171435_amd64
That didn't fix either of my issues, so I know that it hasn't been resolved upstream.

I'm going to consequentially attach the files from the following commands:

dmesg
cat /proc/bus/input/devices

As well as my Xorg log:
/var/log/Xorg.0.log
---
ApportVersion: 2.14.1-0ubuntu3.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: moonwatch 2756 F.... pulseaudio
 /dev/snd/controlC1: moonwatch 2756 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=7e45bc5f-987b-425b-9577-163860e6c77b
InstallationDate: Installed on 2014-09-19 (0 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: ASUSTeK COMPUTER INC. X750LN
NonfreeKernelModules: wl
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-35-generic root=UUID=77c21bfa-8f85-40f8-958d-1d2a571b23f8 ro quiet splash acpi_backlight=vendor vt.handoff=7
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-35-generic N/A
 linux-backports-modules-3.13.0-35-generic N/A
 linux-firmware 1.127.6
StagingDrivers: keucr
Tags: trusty staging
Uname: Linux 3.13.0-35-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
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.

[Nikola Nikolov (nikolov-tmw)]

Output of dmesg attached

[Nikola Nikolov (nikolov-tmw)]

Output of "cat /proc/bus/input/devices"

[Nikola Nikolov (nikolov-tmw)]

/var/log/Xorg.0.log

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1371914

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Nikola Nikolov (nikolov-tmw)]

apport information

[Nikola Nikolov (nikolov-tmw)]

apport information

[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[Nikola Nikolov (nikolov-tmw)]

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[penalvch (penalvch)]

Nikola Nikolov, thank you for reporting this and helping make Ubuntu better. 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:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.17-rc5

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.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

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.

[Nikola Nikolov (nikolov-tmw)]

Hi, sorry for the delay. I'm running the 3.17-rc5 kernel, but the touchpad is still not working(it's still not listed under /proc/bus/input/devices either).

Let me know if you need any more details or any further assistance from me - I'll try to respond as quickly as I can.

[penalvch (penalvch)]

Nikola Nikolov, 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.

[Nikola Nikolov (nikolov-tmw)]

Christopher M. Penalver, can you possibly take a look at the email that I got ready for the mail list and let me know if that seems complete.

The email can be found here - http://pastebin.com/YmxjZQHy . The subject of the email is: "PROBLEM: [Asus X750LN] Touchpad not recognized" and it's going to be addressed to the linux-input mail list(that seemed like the most appropriate place).

I believe I followed the steps 1:1, but the wiki page stresses a lot on making sure that the bug report is complete and not missing anything.

Thank you for your assistance.

[penalvch (penalvch)]

Nikola Nikolov, I've modified 7.7, but other than that, looks good. One would want to e-mail this to the linux-input mailing list.

[Nikola Nikolov (nikolov-tmw)]

Christopher M. Penalver - thank you. What's the new address of the paste(or where's the modified version)?

[penalvch (penalvch)]

[7.7.] Other information that might be relevant to the problem (please look in /proc and include all information that you think to be relevant):
Downstream report may be found at https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1371914 .

No results executing at a terminal:
cat /proc/bus/input/devices | grep Touch

[Nikola Nikolov (nikolov-tmw)]

Thanks, upstream bug report can be found here - https://<email address hidden>/msg12276.html

[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

[Pilot6 (hanipouspilot)]

The bug has been fixed in

linux-generic-lts-wily package.