The problem is that the touchpad is not recognized under Linux, although it worked without any problems under Windows, which excludes a hardware problem.
The touchpad is listed as PS/2 Logitech Wheel Mouse in the output of xinput, and the following lines can be found in the output of dmesg:
[ 4.007364] input: PS/2 Logitech Wheel Mouse as /devices/platform/i8042/serio4/input/input11 [ 4.035847] psmouse serio4: Failed to enable mouse on isa0060/serio4
I've tried mostly everything :
- With the latest upstream kernel, the problem is still there.
$ cat /proc/version Linux version 3.15.0-031500rc7-generic (apw@gomeisa) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201405251935 SMP Sun May 25 23:36:23 UTC 2014
- The i8042 chip is the keyboard and mouse controller, and i8042.c is the source code file in Linux kernel. It can be controlled with kernel parameters:
i8042.debug [HW] Toggle i8042 debug mode i8042.direct [HW] Put keyboard port into non-translated mode i8042.dumbkbd [HW] Pretend that controller can only read data from keyboard and cannot control its state (Don't attempt to blink the leds) i8042.noaux [HW] Don't check for auxiliary (== mouse) port i8042.nokbd [HW] Don't check/create keyboard port i8042.noloop [HW] Disable the AUX Loopback command while probing for the AUX port i8042.nomux [HW] Don't check presence of an active multiplexing controller i8042.nopnp [HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX controllers i8042.notimeout [HW] Ignore timeout condition signalled by controller i8042.reset [HW] Reset the controller during init and cleanup i8042.unlock [HW] Unlock (ignore) the keylock
To pass kernel parameters, edit the following file:
$ sudoedit /etc/default/grub
and add the desired parameter at the end of GRUB_CMDLINE_LINUX_DEFAULT, then:
$ sudo update-grub
I've tried booting with i8042.nomux, then i8042.notimeout i8042.nomux and finally i8042.notimeout i8042.nomux i8042.reset and it didn't make any difference.
- The force_elantech module parameter has been removed, so I couldn't try it.
- I've tried playing with the proto module parameter:
$ sudo modprobe -r psmouse $ sudo modprobe psmouse proto=imps
I've tried the following values: bare, imps and exps, none of them made the touchpad work.
- I've tried all the patches I could find, when they still applied to the kernel:
$ wget https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1166442/+attachment/3941591/+files/psmouse-elantech-x551c.tar.gz $ sudo dkms ldtarball psmouse-elantech-x551c.tar.gz $ sudo dkms install -m psmouse -v elantech-x551c $ sudo modprobe -r psmouse $ sudo modprobe psmouse
I've also tried psmouse-elantech-v6.tar.bz2 and psmouse-elantech-v7.tar.bz2. It didn't work either.
So I've filed a bug report on Launchpad, but I'm not the only one:
- [Asus X550LD] Touchpad not working - Ubuntu 14.04
- [Asus X550LC] Touchpad not Recognized in ubuntu 14.04
- [Asus X550CA] Touchpad not working in ubuntu 14.04
- [Asus X550LD] Touchpad not working/detected Ubuntu 14.04
- [Asus X450CC] Touchpad not working
- [Asus X550LB] Touchpad not working
- [ASUS X750LB] Touchpad not detected
- Asus R751L Notebook - Touchpad not recognized