So I updated to Disco with the touchpad on the Asus GL702VD and for the
most part, it works, I can right click and left click and use 2 fingers
to scroll, however, while I tail the /var/log/syslog I get a bunch of
the following errors that repeat, where with the 4.18 kernel these are
suppressed:

May  3 05:16:56 ubuntu /usr/lib/gdm3/gdm-x-session[1719]: (EE) event5  - 
ELAN1200:00 04F3:3090 Touchpad: kernel bug: Touch jump detected and discarded.
May  3 05:16:56 ubuntu /usr/lib/gdm3/gdm-x-session[1719]: See 
https://wayland.freedesktop.org/libinput/doc/1.12.6/touchpad-jumping-cursors.html
 for details

However, I still have the same issue where if I touch the touchpad with
all 5 fingers, it locks up the touchpad and I have to use a USB mouse to
use the cursor. I also get the following error from the syslog:

May  3 05:16:58 ubuntu kernel: [  424.991449] i2c_designware
i2c_designware.0: i2c_dw_handle_tx_abort: lost arbitration

The only way to get it to work is to reboot the system.

Also, the only way I could get Disco to work was in Graphic safe mode
otherwise the system boots, and then locks up shortly after starting the
desktop. I tried to boot up using modeset.nouveau=0 but it still locks
up requiring a hard reset. However, in graphics safe mode, the system is
useable. Once I install Ubuntu and use the proprietary nVidia graphics,
I can then use the Fx buttons again and most of the shortcut Fn buttons
work (calculator, fan control, brightness, contrast still do not work
from press Fn+F5-F8 and I cannot put it in airplane mode (fn+F12) but
sleep mode does work (Fn+F11)

I can provide more details/logs if you let me know what you need.

Thanks

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https://bugs.launchpad.net/bugs/1738263

Title:
  Touchpad not working and locking CPU

Status in linux package in Ubuntu:
  Triaged

Bug description:
  Notebook: ASUS GL703VD
  Touchpad: probably ELAN clickpad

  it seems to be connected to i2c bus

  the modules loaded are elan_i2c and multitouch_hid

  the multitouch hid module take almost 100% of cpu and the mouse cursor
  moves badly (loosing it for a second or 2 then resuming) also feature
  clicks and doubleclicks and sensitivity problems.

  doing rmmod hid-multitouch.ko (or rmmod multitouch_hid) and
  blacklisting the module solves the cpu problem but obviously the
  touchoad is dead.

  SEVERITY VERY HIGH
  It probably affects many other ASUS models.

  (the touchpad works perfectly in windows 10 by the way)

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