I recently updated my kernel to 3.13.0-35-generic,after update my elantech touchpad multi touch stopped working
I tried fixing it from here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1166442/+index?comments=all
But still its not working,I am using ubuntu 14.04,lenovo z510.
You can try the patch attached to the bug in Launchpad. So first, download the patch and:
cd /path/to/destination/folder
Before to install the patch you may need to install the package dkms using the command:
sudo apt-get install dkms
Then, install the patch:
sudo dkms ldtarball psmouse-elantech-x551c.tar.gz
sudo dkms install -m psmouse -v elantech-x551c
After it's installed successfully, you need to remove and re-add the module from, and to the kernel:
sudo rmmod psmouse
sudo modprobe psmouse
Finally, to make changes permanent on boot:
sudo update-initramfs -u -k all
The patch works but disables the physical right-click, so I decided to upgrade the kernel.
Trying new kernels is not much difficult. All you need is 3 .deb files from kernel mainline : two linux-headers and linux-image (both of them from either generic or lowlatency) suitable for your architecture and one linux-headers-*-all; for example 3.16 for a 64-bit system will be:
linux-headers-3.16.0-031600-generic_3.16.0-031600.201408031935_amd64.deb
linux-headers-3.16.0-031600_3.16.0-031600.201408031935_all.deb
linux-image-3.16.0-031600-generic_3.16.0-031600.201408031935_amd64.deb
You can install them from Software Center, or by commands:
cd /path/to/download/folder
sudo dpkg -i linux*.deb
Then you need to update grub settings:
sudo update-grub
Restart the system to see if the kernel works. Be aware that proprietary drivers may have problems with new kernels. In the case of your system failed to boot properly, go to boot advanced option, select a working kernel to boot. Then remove the non-working kernel, the same example here:
sudo apt-get remove linux-headers-3.16.0-* linux-image-3.16.0-*
And update grub again with sudo update-grub.
Edit: It is safer to install kernel packages from Ubuntu repositories with Software Center or Synaptic Package Manager. There are four files of each version; for example, for the latest build of 3.16:
update-initramfs to prevent changes lost after reboot. Furthermore, the patch can have side effects (i.e. broken physical right-click) so I added the update kernel part. But if you mean my edit on your question, well, you just posted the answer inside the question itself. Sorry! I should leave it to you to do on yourself.
– AliNajafies
Oct 28 '14 at 14:29
update initramfs I might lose the changes after update thats fine but you said you might lose rt click that happens because of patch or because of the last cmd update initramfs ?
– Lohith MV
Oct 28 '14 at 18:19
update-initramfs I lost changes after every reboot and I had to do rmmod and modprobe again and again.
– AliNajafies
Oct 29 '14 at 00:48
On my Acer E15 with ubuntu 14.04, kernel 3.16.0-31-generic, I had to set the touchpad to Basic in the BIOS. Else the Elantic touchpad did not work at all. But, it did not work well, no scrolling, etc.. But, after having patched the kernel as described above, it worked fine including right-click.
I have an X-config file /etc/X11/xorg.conf - though I have not checked whether it matters.
Section "InputClass"
Identifier "ETPS/2 Elantech Touchpad"
MatchProduct "ETPS/2 Elantech Touchpad"
MatchDevicePath "/dev/input/event*"
Driver "synaptics"
Option "TapButton1" "1"
Option "TapButton2" "3"
Option "TapButton3" "2"
Option "VertTwoFingerScroll" "1"
Option "HorizTwoFingerScroll" "1"
Option "CoastingSpeed" "10"
Option "EdgeMotionMinZ" "30"
Option "EdgeMotionMaxZ" "40"
Option "EdgeMotionMinSpeed" "100"
Option "EdgeMotionMaxSpeed" "400"
Option "FingerLow" "9"
Option "FingerHigh" "12"
Option "EmulateMidButtonTime" "0"
Option "ClickPad" "True"
Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0"
EndSection
<$> button in the editor toolbar to format code listings.
– David Foerster
Mar 19 '15 at 03:22
