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I upgraded to 16.10 a few days ago and had a total freeze on the system; unresponsive cursor, couldn't exit X and had to force shutdown vi the power button. After that I have been experiencing problems with a dual display setup which don't allow arranging them. Instead the system logs out.

Furthermore the touchpad settings are not visible any longer and I cannot change the scrolling method to natural scrolling. The dconf editor (under org> gnome> desktop> peripherals> touchpad) states that the natural-scroll setting is enabled though. The scenario is similar to this. I've got xserver-xorg-input-synaptics installed instead of libinput.

Ubuntu Gnome 16.10 running on a 13" MacBook 5,1 (2009)

  • ot both the touchpad and dual screen problem solved by reinstalling xserver-xorg-input-libinput, uninstalling xserver-xorg-input-synaptics and rebooting. So the opposite to the answer in the post which I linked to. The problem persists though with the keyboard and trackpad stop responding after ~hour. Driver problem? The bcm5974 entry which was previously in the xinput list is not present any longer. – droid001 Dec 5 '16 at 22:58
  • Added GRUB_CMDLINE_LINUX_DEFAULT="intel_idle.max_cstate=1" as described in this post. Still a problem with keyboard/trackpad crashes though. – droid001 Dec 5 '16 at 23:00
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I found the problem being that both libinput and the synaptics drivers were present. I've deleted synaptics driver as it's legacy and got libinput instead:

sudo apt install libinput-bin & xserver-xorg-input-libinput

which leaves me with quite an empty mouse/trackpad pane in system settings. The only options there are the choices of either using the left or right button for the primary click.

Current mouse/trackpad settings can be set with gpointing-device-settings or in /usr/share/X11/xorg.conf.d/60-libinput.conf.

gpointing device settings

As for the problem with the display, a reinstall of the nVidia driver

sudo apt install --reinstall nvidia-340

and a reboot made the screens work together again.

  • Reacted too early. After a kernal update libinput got installed again and the keyboard and mouse froze. I uninstalled xserver-xorg-input-synaptics but ended up with a jumping cursor. Now I've reinstalled synaptics and touchpad indicator. The later is the only settings which enables natural scrolling. Let's see how long this configuration will last before a kb/tp freeze. – droid001 Dec 6 '16 at 20:17
  • Got a crash on the keyboard/trackpad and found an error log at /var/crash/_opt_extras.ubuntu.com_touchpad-indicator_bin_touchpad-indicator.1000.crash ProcVersionSignature: Ubuntu 4.8.0-28.30-generic 4.8.6 SourcePackage: touchpad-indicator Tags: yakkety third-party-packages Title: touchpad-indicator crashed with OSError in /opt/extras.ubuntu.com/touchpad-indicator/share/touchpad-indicator/comun.py: [Errno 5] Inp$ Uname: Linux 4.8.0-28-generic x86_64 UnreportableReason: This is not an official Ubuntu package. Please remove any third party package and try again. will try without this – droid001 Dec 6 '16 at 22:00
  • Seemingly libinput is taking precedence over the synaptics driver in terms of development. I've switched over to libinput which at first left me with a cursor which mapped to the absolute position of the cursor to the screen. This meant that when, for instance, touching the top right corner of the touch pad the cursor would jump there. Finally I got found that one has to install xserver-xorg-input-libinput to get the touch pad to function normally. This could have maybe been installed by default... – droid001 Dec 10 '16 at 22:37
  • Keyboard and trackpad still freeze even when xserver-xorg-input-synaptics package is uninstalled. Any help of which log files to look for debug information would be appreciated. – droid001 Jan 7 '17 at 20:45

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