To be honest, there are few strange issues related to using trackpad /
touchscreen. Sometimes can't two-finger scroll after using touchscreen,
etc.

But for reference, here is my config:

dell-xps12:~$ uname -a
Linux dell-xps12 3.13.0-23-generic #45-Ubuntu SMP Fri Apr 4 06:58:38 UTC 2014 
x86_64 x86_64 x86_64 GNU/Linux

y@dell-xps12:~/devel/hid-rmi$ lsmod
Module                  Size  Used by
hid_multitouch         17407  0 
i2c_hid                18704  0 
hid_rmi                17520  0 
ctr                    13049  1 
ccm                    17773  1 
ipt_MASQUERADE         12880  3 
iptable_nat            13011  1 
nf_nat_ipv4            13263  1 iptable_nat
nf_nat                 21798  3 ipt_MASQUERADE,nf_nat_ipv4,iptable_nat
nf_conntrack_ipv4      15012  2 
nf_defrag_ipv4         12758  1 nf_conntrack_ipv4
xt_conntrack           12760  1 
nf_conntrack           96976  6 
ipt_MASQUERADE,nf_nat,nf_nat_ipv4,xt_conntrack,iptable_nat,nf_conntrack_ipv4
ipt_REJECT             12541  2 
xt_CHECKSUM            12549  1 
iptable_mangle         12695  1 
xt_tcpudp              12884  6 
bridge                110754  0 
stp                    12976  1 bridge
llc                    14552  2 stp,bridge
joydev                 17381  0 
ip6table_filter        12815  0 
ip6_tables             27025  1 ip6table_filter
iptable_filter         12810  1 
ip_tables              27239  3 iptable_filter,iptable_mangle,iptable_nat
ebtable_nat            12807  0 
ebtables               30913  1 ebtable_nat
x_tables               34059  11 
ip6table_filter,xt_CHECKSUM,ip_tables,xt_tcpudp,ipt_MASQUERADE,xt_conntrack,iptable_filter,ebtables,ipt_REJECT,iptable_mangle,ip6_tables
arc4                   12608  2 
dm_crypt               23177  1 
iwlmvm                189774  0 
hid_sensor_magn_3d     13209  0 
hid_sensor_gyro_3d     13209  0 
mac80211              626489  1 iwlmvm
hid_sensor_accel_3d    13221  0 
hid_sensor_trigger     12916  3 
hid_sensor_gyro_3d,hid_sensor_accel_3d,hid_sensor_magn_3d
industrialio_triggered_buffer    12882  3 
hid_sensor_gyro_3d,hid_sensor_accel_3d,hid_sensor_magn_3d
kfifo_buf              13379  1 industrialio_triggered_buffer
industrialio           54069  6 
hid_sensor_trigger,hid_sensor_gyro_3d,industrialio_triggered_buffer,hid_sensor_accel_3d,kfifo_buf,hid_sensor_magn_3d
hid_sensor_iio_common    13755  3 
hid_sensor_gyro_3d,hid_sensor_accel_3d,hid_sensor_magn_3d
pn544_mei              12787  0 
mei_phy                13881  1 pn544_mei
pn544                  18174  1 pn544_mei
hci                    44425  2 pn544,mei_phy
nfc                    95012  2 hci,pn544
dell_wmi               12761  0 
sparse_keymap          13948  1 dell_wmi
dell_laptop            18168  0 
dcdbas                 14928  1 dell_laptop
hid_sensor_hub         19536  5 
hid_sensor_trigger,hid_sensor_gyro_3d,hid_sensor_accel_3d,hid_sensor_magn_3d,hid_sensor_iio_common
uvcvideo               80885  0 
videobuf2_vmalloc      13216  1 uvcvideo
videobuf2_memops       13362  1 videobuf2_vmalloc
videobuf2_core         40664  1 uvcvideo
videodev              134688  2 uvcvideo,videobuf2_core
dm_multipath           22873  0 
scsi_dh                14882  1 dm_multipath
intel_rapl             18773  0 
x86_pkg_temp_thermal    14205  0 
intel_powerclamp       14705  0 
coretemp               13435  0 
kvm_intel             143060  0 
kvm                   451511  1 kvm_intel
crct10dif_pclmul       14289  0 
crc32_pclmul           13113  0 
ghash_clmulni_intel    13259  0 
aesni_intel            55624  574 
rfcomm                 69160  12 
aes_x86_64             17131  1 aesni_intel
lrw                    13286  1 aesni_intel
gf128mul               14951  1 lrw
glue_helper            13990  1 aesni_intel
ablk_helper            13597  1 aesni_intel
snd_hda_codec_hdmi     46207  1 
cryptd                 20359  288 ghash_clmulni_intel,aesni_intel,ablk_helper
snd_hda_codec_realtek    61438  1 
psmouse               102004  0 
snd_seq_midi           13324  0 
serio_raw              13462  0 
snd_seq_midi_event     14899  1 snd_seq_midi
snd_hda_intel          52355  5 
snd_hda_codec         192906  3 
snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
iwlwifi               169932  1 iwlmvm
snd_rawmidi            30144  1 snd_seq_midi
snd_hwdep              13602  1 snd_hda_codec
lpc_ich                21080  0 
snd_pcm               102099  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
cfg80211              484040  3 iwlwifi,mac80211,iwlmvm
snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
btusb                  32412  0 
bnep                   19624  2 
snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
bluetooth             395423  22 bnep,btusb,rfcomm
snd_timer              29482  2 snd_pcm,snd_seq
snd                    69238  21 
snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
mei_me                 18627  0 
mei                    82274  3 pn544_mei,mei_phy,mei_me
soundcore              12680  1 snd
intel_smartconnect     12619  0 
i2c_designware_platform    12960  0 
i2c_designware_core    14768  1 i2c_designware_platform
mac_hid                13205  0 
lp                     17759  0 
parport                42348  1 lp
usbhid                 52616  0 
hid                   106148  5 
i2c_hid,hid_multitouch,hid_sensor_hub,hid_rmi,usbhid
i915                  783485  5 
i2c_algo_bit           13413  1 i915
drm_kms_helper         52758  1 i915
ahci                   25819  2 
drm                   302817  4 i915,drm_kms_helper
libahci                32168  1 ahci
wmi                    19177  1 dell_wmi
video                  19421  1 i915

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1218973

Title:
  [Dell XPS 12-9Q33] Touchpad not recognized

Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  With the new XPS 12 (haswell), the touchpad gets detected as "PS/2 Generic 
Mouse".
  cat /proc/bus/input/devices
  I: Bus=0011 Vendor=0002 Product=0001 Version=0000
  N: Name="PS/2 Generic Mouse"
  P: Phys=isa0060/serio1/input0
  S: Sysfs=/devices/platform/i8042/serio1/input/input13
  U: Uniq=
  H: Handlers=mouse2 event13
  B: PROP=0
  B: EV=7
  B: KEY=700

  Upstream URL: http://www.spinics.net/lists/linux-input/msg27737.html

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-4-generic 3.11.0-4.9
  ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
  Uname: Linux 3.11.0-4-generic x86_64
  ApportVersion: 2.12.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  oli        1862 F.... pulseaudio
   /dev/snd/controlC0:  oli        1862 F.... pulseaudio
  Date: Fri Aug 30 17:03:26 2013
  HibernationDevice: RESUME=UUID=6d351a70-8a00-4f2c-a48d-a79cb070a939
  InstallationDate: Installed on 2013-08-25 (4 days ago)
  InstallationMedia: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha amd64 
(20130825)
  MachineType: Dell Inc. XPS 12-9Q33
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-4-generic.efi.signed 
root=UUID=5d13cb7e-817c-4234-b758-0d79e4eade0b ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-4-generic N/A
   linux-backports-modules-3.11.0-4-generic  N/A
   linux-firmware                            1.113
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/26/2013
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A02
  dmi.board.name: XPS 12-9Q33
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A02
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: 
dmi:bvnDellInc.:bvrA02:bd07/26/2013:svnDellInc.:pnXPS12-9Q33:pvrA02:rvnDellInc.:rnXPS12-9Q33:rvrA02:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: XPS 12-9Q33
  dmi.product.version: A02
  dmi.sys.vendor: Dell Inc.

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