I have a Lenovo Ideapad Y560 Laptop running Ubuntu 16.04. On startup both the touchpad and a USB mouse work fine.
After suspend, the mouse buttons work differently and erratically. This is true for both the touchpad buttons and the USB mouse buttons. Most notably, the left button doesn't select open windows, closes tabs in Google Chrome, but can still open applications in the Unity Desktop dock on the left side of the screen. The mouse pointer's movement is still fine with both the mouse & the touchpad.
My question: Any idea what's going on, or how to fix it?
This laptop has an i8042 controller, which I've read has issues sometimes with Linux.
Here is the output of
dmesg | grep i8042
[ 1.028910] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2P] at 0x60,0x64 irq 1,12 [ 1.062759] i8042: Detected active multiplexing controller, rev 1.1 [ 1.076908] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 1.076919] serio: i8042 AUX0 port at 0x60,0x64 irq 12 [ 1.076989] serio: i8042 AUX1 port at 0x60,0x64 irq 12 [ 1.077044] serio: i8042 AUX2 port at 0x60,0x64 irq 12 [ 1.077097] serio: i8042 AUX3 port at 0x60,0x64 irq 12 [ 1.147924] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input4 [ 2.824853] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio4/input/input10 [ 4.455565] input: PS/2 Generic Mouse as /devices/platform/i8042/serio3/input/input16
I've tried some things that haven't worked:
From this post, putting an executable shell script in the /etc/pm/sleep.d/ directory that unbinds the controller when suspending and rebinds it on awakening. This didn't seem to do anything.
From this post and this post, adding different options to the kernel's boot options to configure i8042. I tried adding i8042.reset i8042.nopnp i8042.direct i8042.dumbkbd i8042.nomux i8042.noloop to the "GRUB_CMDLINE_LINUX_DEFAULT" attribute in the file /etc/default/grub, as well as trying each of them separately. A few of these actually worked but caused another problem: they fixed the mouse buttons after suspend, but disabled the touchpad completely. This isn't ideal, as I don't always have a USB mouse.
⎡ Virtual core pointer id=2 [master pointer (3)] ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)] ⎜ ↳ Logitech USB Optical Mouse id=11 [slave pointer (2)] ⎜ ↳ PS/2 Generic Mouse id=15 [slave pointer (2)] ⎜ ↳ SynPS/2 Synaptics TouchPad id=16 [slave pointer (2)] ⎣ Virtual core keyboard id=3 [master keyboard (2)] ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)] ↳ Power Button id=6 [slave keyboard (3)] ↳ Video Bus id=7 [slave keyboard (3)] ↳ Video Bus id=8 [slave keyboard (3)] ↳ Power Button id=9 [slave keyboard (3)] ↳ Sleep Button id=10 [slave keyboard (3)] ↳ Lenovo EasyCamera id=12 [slave keyboard (3)] ↳ Ideapad extra buttons id=13 [slave keyboard (3)] ↳ AT Translated Set 2 keyboard id=14 [slave keyboard (3)]
synclient | grep Touchpad
TouchpadOff = 2
In case if it's helpful:
sudo synclient TouchpadOff=0 successfully changes the value of TouchpadOff from 2 to 0. However, after one click of the mouse or touchpad button, it changes back to 2 immediately.