Touchpad lost sync at byte 6

Touchpad lost sync at byte 6

[Jonathan Denose]

I am on a Lenovo N24 laptop.

When this device resumes after closing the lid, the mouse freezes and
is unusable. After right-clicking multiple times the touchpad resumes
working. I am seeing the following in the logs:

[ 1188.690138] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1188.699636] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1188.709124] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1188.718557] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1188.728110] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1188.975964] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1188.985456] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1188.994954] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1189.004443] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6
[ 1189.013930] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
sync at byte 6

This device has an ETPS/2 Elantech Touchpad. I am on kernel version:
5.15.117-19629-gf1eb3139d206

Currently the device suspends to ram when the lid closes. When the
device idles without the lid closing, the touchpad works fine on
resume.

I have tried adding various i8042 and psmouse kernel parameters from
searching different forums related to these error messages, but none
of them fix the issue. I have tried
- psmouse.resetafter=0
- psmouse.resetafter=1
- i8042.nomux=1
- i8042.resetafter=1/0
- i8042.reset=1 i8042.nomux=1
- i8042.noloop=1 i8042.nopnp=1 i8042.nomux=1 i8042.reset=1

I was able to resolve this issue by doing `modprobe -r psmouse &&
modprobe.psmouse proto=imps`. proto=bare and proto=exps also resolve
the issue. However, with those options enabled I can no longer use
gestures like two-finger scroll.

This issue reproduces on ChromeOS Flex and Ubuntu 22.04 but not on
Windows. On Windows the touchpad resuming after closing the lid works
fine.

What can I do to resolve this issue while also keeping touchpad gestures?

Any help is greatly appreciated!

Re: Touchpad lost sync at byte 6

[Greg KH]

On Wed, Jun 28, 2023 at 04:00:54PM -0500, Jonathan Denose wrote:
> I am on a Lenovo N24 laptop.
> 
> When this device resumes after closing the lid, the mouse freezes and
> is unusable. After right-clicking multiple times the touchpad resumes
> working. I am seeing the following in the logs:
> 
> [ 1188.690138] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1188.699636] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1188.709124] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1188.718557] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1188.728110] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1188.975964] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1188.985456] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1188.994954] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1189.004443] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> [ 1189.013930] psmouse serio1: Touchpad at isa0060/serio1/input0 lost
> sync at byte 6
> 
> This device has an ETPS/2 Elantech Touchpad. I am on kernel version:
> 5.15.117-19629-gf1eb3139d206

Why not try 6.4 and see if that solves the problem?

Has this ever worked on this hardware with any kernel version?

thanks,

greg k-h

Re: Touchpad lost sync at byte 6

[Jonathan Denose]

Is linux-input@vger.kernel.org not also the input driver maintainers
list? When I run get_maintainers.pl on the mouse driver files it gives
me only this list and then some personal emails of some maintainers.

I think I may have forgotten to reply-all earlier in the thread so the
list wasn't cc'd on all of the emails.

On Sat, Jul 8, 2023 at 8:10 AM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Fri, Jul 07, 2023 at 10:42:06AM -0500, Jonathan Denose wrote:
> > Hi Greg,
> >
> > Thanks for your reply.
> >
> > I have tried the 6.4 and 6.1 kernels and the issue is still present.
> > I've tried on 5.10 as well.
> >
> > I'm suspecting that this may have not worked on this hardware with any
> > kernel version. Where should I go from here?
>
> Contact the input driver maintainers on their list and work on the issue
> there.
>
> good luck!
>
> greg k-h

Re: Touchpad lost sync at byte 6

[Greg KH]

A: http://en.wikipedia.org/wiki/Top_post
Q: Were do I find info about this thing called top-posting?
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing in e-mail?

A: No.
Q: Should I include quotations after my reply?

http://daringfireball.net/2007/07/on_top

On Mon, Jul 17, 2023 at 02:13:37PM -0500, Jonathan Denose wrote:
> Is linux-input@vger.kernel.org not also the input driver maintainers
> list? When I run get_maintainers.pl on the mouse driver files it gives
> me only this list and then some personal emails of some maintainers.

That would be correct.

> I think I may have forgotten to reply-all earlier in the thread so the
> list wasn't cc'd on all of the emails.

Then no one saw it :(

Please resend starting from the beginning.

thanks,

greg k-h