Yes, the latest touchpad freeze (mentioned in comment #5) occured with
mainline kernel 4.4.0-040400-generic and BIOS version E403SA.213
(latest). Do I need to test the upgraded BIOS with kernel
4.2.0-23-generic from default repository?

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  ELAN1000 touchpad not recognised correctly, with upstream kernel it
  recognised, but freezes randomly

Status in linux package in Ubuntu:

Bug description:
  I've got an ASUS E403SA notebook with Ubuntu 15.10 and kernel
  4.2.0-23-generic from default repository. The touchpad is in PS/2
  mouse emulation mode so multitouch like two-finger scrolling is not

  Dmesg output attached and xinput --list shows:

  ⎡ Virtual core pointer                        id=2    [master pointer  (3)]
  ⎜   ↳ Virtual core XTEST pointer                      id=4    [slave  pointer 
  ⎜   ↳ ELAN1000:00 04F3:0401                           id=11   [slave  pointer 
  ⎣ Virtual core keyboard                       id=3    [master keyboard (2)]
      ↳ Virtual core XTEST keyboard                     id=5    [slave  
keyboard (3)]
      ↳ Power Button                                    id=6    [slave  
keyboard (3)]
      ↳ Video Bus                                       id=7    [slave  
keyboard (3)]
      ↳ Sleep Button                                    id=8    [slave  
keyboard (3)]
      ↳ USB2.0 VGA UVC WebCam                           id=10   [slave  
keyboard (3)]
      ↳ Asus WMI hotkeys                                id=12   [slave  
keyboard (3)]
      ↳ AT Translated Set 2 keyboard                    id=13   [slave  
keyboard (3)]

  The correct driver merged in 4.3.x kernel so I decided to test it from
  mainline repo

  With kernel 4.3.x and newer the touchpad recognised correctly and
  multitouch works. After a while (minutes, sometimes hours) the
  touchpad completely freezes with this message in syslog:

  Jan  5 20:55:27 darkslide-notebook kernel: [ 1531.867948] i2c_designware 
808622C1:03: Unknown Synopsys component type: 0x00000000
  Jan  5 20:55:27 darkslide-notebook kernel: [ 1531.893399] i2c_designware 
808622C1:03: timeout in enabling adapter
  Jan  5 20:55:28 darkslide-notebook kernel: [ 1532.892319] i2c_designware 
808622C1:03: controller timed out
  Jan  5 20:55:28 darkslide-notebook kernel: [ 1532.892334] i2c_designware 
808622C1:03: Unknown Synopsys component type: 0x00000000
  Jan  5 20:55:28 darkslide-notebook kernel: [ 1532.892343] elan_i2c 
i2c-ELAN1000:00: failed to read report data: -110

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-23-generic 4.2.0-23.28
  ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6
  Uname: Linux 4.2.0-23-generic x86_64
  ApportVersion: 2.19.1-0ubuntu5
  Architecture: amd64
   /dev/snd/controlC0:  darkslide   1511 F.... pulseaudio
  Date: Wed Jan 20 08:33:06 2016
  HibernationDevice: RESUME=UUID=2e8dbaca-618a-4aff-95bf-a134e77a2ea5
  InstallationDate: Installed on 2015-12-11 (39 days ago)
  InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-23-generic.efi.signed 
root=UUID=9179712a-c5fc-4d70-ad86-517fad86f155 ro intel_idle.max_cstate=1
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
   linux-restricted-modules-4.2.0-23-generic N/A
   linux-backports-modules-4.2.0-23-generic  N/A
   linux-firmware                            1.149.3
  SourcePackage: linux
  UdevLog: Error: [Errno 2] Nincs ilyen fájl vagy könyvtár: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install) 08/13/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: E403SA.212
  dmi.board.asset.tag: ATN12345678901234567 E403SA
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
dmi:bvnAmericanMegatrendsInc.:bvrE403SA.212:bd08/13/2015:svnASUSTeKCOMPUTERINC.:pnE403SA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnE403SA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: E403SA
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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