Try sudo ./init /dev/serio_raw0.

I'll add a comment about that in the usage section. That device file should
be created if you switch a device to serio_raw (serio4 here!).
Am 19.10.2014 16:10 schrieb "linduxed" <email address hidden>:

> First of all, thanks a lot for the effort to give us a solution to this
> problem!
>
> I'd like to verify that it works on my UX303LN. I went ahead and compiled
> the
> code and tried echoing in "serio_raw" into one of the
> /sys/bus/serio/devices/serio*/drvctl, but got stuck on the following:
>
> $ sudo ./init /sys/bus/serio/devices/serio1/
> Could not open /sys/bus/serio/devices/serio1/. Check that the program is
> run
> with the required privileges and that the file exists.
> open: Is a directory
>
> What file does the program want as its argument?
>
> On 2014-10-19 15:19, Mathias Gottschlag wrote:
> > ... that went quicker than expected. The link above now contains a
> > mostly complete parser for the packet stream that (afaics) gives the
> > correct finger position for up to 5 fingers, as well as information
> > about touchpad clicks.
> >
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1372609
>
> Title:
>   Touchpad detected as mouse on Asus ux303ln laptop
>
> Status in “linux” package in Ubuntu:
>   Confirmed
>
> Bug description:
>   Hi! I'm following the bug reporting documentation here:
>
>
> https://wiki.ubuntu.com/DebuggingTouchpadDetection#In_case_Touchpad_features_like_scrolling.2C_tapping.2C_etc._do_not_work_at_all
> .
>
>   The touchpad on my new Asus ux303ln laptop is detected as a mouse, so
>   I can't access touchpad features such as two-finger scrolling.
>
>   The laptop was very recently released and I couldn't find any
>   outstanding firmware updates for it through Asus's Windows-based
>   tools.
>
>   % lsb_release -rd
>   Description:  Ubuntu 14.04.1 LTS
>   Release:      14.04
>
>   Per the instructions on the wiki, I'm attaching output from
>   /proc/bus/input/devices,` xinput --list`, and /var/log/Xorg.0.log.
>
>   This machine also has a touchscreen, which I'm fairly certain is the
>   "maXtouch digitizer" visible in the logs. I haven't yet restarted in
>   Windows to see if it says anything useful about the touchpad, but I
>   can do so if that's helpful. This is a fresh install of 14.04 and I
>   haven't done much customization of it apart from installing some
>   applications and changing the default resolution.
>
>   The only relevant bit I noticed in /var/log/dmesg is this:
>
>   [    3.967547] input: PS/2 Logitech Wheel Mouse as
>   /devices/platform/i8042/serio4/input/input11
>
>   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
>   ApportVersion: 2.14.1-0ubuntu3.4
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  tim        2234 F.... pulseaudio
>    /dev/snd/controlC1:  tim        2234 F.... pulseaudio
>   CurrentDesktop: Unity
>   Date: Mon Sep 22 14:30:33 2014
>   HibernationDevice: RESUME=UUID=e6052f15-271a-4424-aac2-9b0ee1e490ed
>   InstallationDate: Installed on 2014-09-22 (0 days ago)
>   InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64
> (20140722.2)
>   Lsusb:
>    Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
>    Bus 001 Device 003: ID 03eb:8a32 Atmel Corp.
>    Bus 001 Device 002: ID 064e:9700 Suyin Corp.
>    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>   MachineType: ASUSTeK COMPUTER INC. UX303LN
>   ProcFB: 0 inteldrmfb
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic.efi.signed
> root=UUID=4f908b1b-e06f-4dc9-9642-e952d2598e42 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                             1.127.6
>   SourcePackage: linux
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 06/23/2014
>   dmi.bios.vendor: American Megatrends Inc.
>   dmi.bios.version: UX303LN.203
>   dmi.board.asset.tag: ATN12345678901234567
>   dmi.board.name: UX303LN
>   dmi.board.vendor: ASUSTeK COMPUTER INC.
>   dmi.board.version: 1.0
>   dmi.chassis.asset.tag: No Asset Tag
>   dmi.chassis.type: 10
>   dmi.chassis.vendor: ASUSTeK COMPUTER INC.
>   dmi.chassis.version: 1.0
>   dmi.modalias:
> dmi:bvnAmericanMegatrendsInc.:bvrUX303LN.203:bd06/23/2014:svnASUSTeKCOMPUTERINC.:pnUX303LN:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LN:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
>   dmi.product.name: UX303LN
>   dmi.product.version: 1.0
>   dmi.sys.vendor: ASUSTeK COMPUTER INC.
>
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