Thanks to Harris Anggara (harrisanggara) and Daniel Drake (dsdrake) here, https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1490130 , I could solve my problem by adding this patch to the kernel : https://marc.info/?l=linux-input&m=144312209020616&w=2
now i'm using kernel 4.2 for Ubuntu 14.04 with the patch. i changed the DMI_PRODUCT_NAME with K501LX (because that is my laptop model). I tried directly with kernel 4.2 because before that, kernel 3.19 and so, they need a driver for my touchpad. I followed the instruction here to obtain the source of kernel 4.2 for Ubuntu 14.04, https://wiki.ubuntu.com/Kernel/Dev/KernelGitGuide git clone git://kernel.ubuntu.com/ubuntu/ubuntu-trusty.git then from inside the folder you've just downloaded (cd ubuntu-trusty) git tag -l Ubuntu-* to know what is available for ubuntu 14.04 and then git checkout -f -b temp Ubuntu-lts-4.2.0-6.6_14.04.1.1 After, to build the kernel, I followed this explanation, https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel fakeroot debian/rules clean fakeroot debian/rules binary-headers binary-generic then cd .. ls *.deb linux-cloud-tools-4.2.0-6-generic_4.2.0-6.6~14.04.1.1_amd64.deb linux-headers-4.2.0-6_4.2.0-6.6~14.04.1.1_all.deb linux-headers-4.2.0-6-generic_4.2.0-6.6~14.04.1.1_amd64.deb linux-image-4.2.0-6-generic_4.2.0-6.6~14.04.1.1_amd64.deb linux-image-extra-4.2.0-6-generic_4.2.0-6.6~14.04.1.1_amd64.deb linux-tools-4.2.0-6-generic_4.2.0-6.6~14.04.1.1_amd64.deb I deleted this two files because I don't need them linux-cloud-tools-4.2.0-6-generic_4.2.0-6.6~14.04.1.1_amd64.deb linux-tools-4.2.0-6-generic_4.2.0-6.6~14.04.1.1_amd64.deb and finally, sudo dpkg -i linux*4.2.0-6.6~14.04.1.1*.deb sudo reboot Now it works nicely. The touchpad works fine, without the need to install any driver and I can suspend the activity of my computer and resume without loosing the touchpad. I hope the patch will be integrated soon and I won't loose my touchpad again with updates in the future. Thank you everybody, Take care, always smiling, -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1504445 Title: FocalTech touchpad stops working after suspend To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1504445/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
