Arch Linux

ralph_13

Member

Registered: 2015-02-06

Posts: 73

ASUS vivobook S400C - erratic touchpad behavior

I'm using the synaptics driver. Although it doesn't seem to be supported right now, I never had any similar issues when using it on other laptops. Anyway, sometimes whenever I touch the touchpad the cursor starts moving and clicing everything without any movement from my fingers. This laptop has a touchscreen that works fine, they don't seem to be conflicting, since disabling it won't stop the touchpad from going haywire.

xorg log

% xinput list                                                    
⎡ Virtual core pointer                    	id=2	[master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer              	id=4	[slave  pointer  (2)]
⎜   ↳ ETPS/2 Elantech Touchpad                	id=14	[slave  pointer  (2)]
⎜   ↳ Atmel Atmel maXTouch Digitizer          	id=11	[slave  pointer  (2)]
⎣ Virtual core keyboard                   	id=3	[master keyboard (2)]
    ↳ Virtual core XTEST keyboard             	id=5	[slave  keyboard (3)]
    ↳ Asus Wireless Radio Control             	id=6	[slave  keyboard (3)]
    ↳ Video Bus                               	id=7	[slave  keyboard (3)]
    ↳ Power Button                            	id=8	[slave  keyboard (3)]
    ↳ Sleep Button                            	id=9	[slave  keyboard (3)]
    ↳ ASUS USB2.0 Webcam: ASUS USB2.0         	id=10	[slave  keyboard (3)]
    ↳ Asus WMI hotkeys                        	id=12	[slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard            	id=13	[slave  keyboard (3)]

Kinda lost on where to look next, do you guys have any advice? Thanks a lot!

Last edited by ralph_13 (2018-05-22 18:35:22)

Slithery

Administrator

From: Norfolk, UK

Registered: 2013-12-01

Posts: 5,776

Re: ASUS vivobook S400C - erratic touchpad behavior

I'm guessing it's an issue between the new versions of X and the now unmaintained synaptics.

My suggestion would be to switch to libinput instead.

---

No, it didn't "fix" anything. It just shifted the brokeness one space to the right. - jasonwryan
Closing -- for deletion; Banning -- for muppetry. - jasonwryan

aur - dotfiles

ralph_13

Member

Registered: 2015-02-06

Posts: 73

Re: ASUS vivobook S400C - erratic touchpad behavior

Ok, I just tried your suggestion, now using libinput with the synaptics pkg removed, the problem persists, nothing has changed. Also, if I have an usb mouse plugged in, the mouse works as expected, just like the touchscreen, the cursor only starts misbehaving if i touch the touchpad.

Edit: some xinput test output of me just resting my finger on the pad for a sec or so:

% xinput test 15         
motion a[0]=367 a[1]=279 
motion a[0]=360 a[1]=275 
motion a[0]=359 
motion a[0]=356 a[1]=274 
motion a[0]=351 a[1]=272 
motion a[0]=349 a[1]=277 
motion a[0]=351 a[1]=272 
motion a[0]=354 a[1]=267 
motion a[0]=373 a[1]=247 
motion a[0]=366 a[1]=251 
motion a[1]=252 
motion a[0]=376 a[1]=248 
motion a[0]=374 a[1]=253 
motion a[0]=369 a[1]=260 
motion a[0]=364 a[1]=264 
motion a[0]=363 a[1]=265 
motion a[0]=362 a[1]=263 
motion a[0]=348 a[1]=261 
motion a[0]=349 
motion a[0]=350 a[1]=263 
motion a[0]=353 a[1]=266 
motion a[0]=351 a[1]=270 
motion a[0]=355 a[1]=260 
motion a[0]=359 
motion a[0]=339 a[1]=316 

Last edited by ralph_13 (2018-05-22 20:13:41)

NoMore201

Member

Registered: 2016-03-15

Posts: 7

Re: ASUS vivobook S400C - erratic touchpad behavior

I have a similar Asus laptop with same touchpad (Asus Vivobook S551LN). After some time, Elantech touchpad started to behave strangely: basically the right click is always pushed, so every time I move the pointer it drags and selects everything in its path.

In my case I already verified it is an hardware problem (same thing happens with windows 10). I tried to fix it on the hardware side, but I didn't succeed. The only software workaround I found is to remap button keys with xinput.

ralph_13

Member

Registered: 2015-02-06

Posts: 73

Re: ASUS vivobook S400C - erratic touchpad behavior

the right click
it drags and selects.

You mean the left click?

Although I considered the possibility of hardware damage, I just installed arch on this machine and the touchpad was working properly in windows. Actually it was slow as shit, the scrolling sucked (linux's synaptics driver's momentum scrolling is sooo fast and smooth) and the only thing configurable about it was the scrolling direction... but anyway, no misbehaving. Also, I got the touchscreen working pretty much just like it does in windows, mail me if you need any help with that.

Last edited by ralph_13 (2018-05-23 18:23:00)