[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

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** Changed in: linux
   Status: Confirmed => Fix Released

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Title:
  Touchpad not detected on Lenovo S21e-20

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[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

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Launchpad has imported 9 comments from the remote bug at
https://bugzilla.kernel.org/show_bug.cgi?id=195669.

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On 2017-05-05T09:04:20+00:00 rghvdberg wrote:

Created attachment 256219
lshw

OS Kubuntu 17.04
Kernel 4.11.0-041100-generic (mainline)
The touchpad isn

I've tried several kernel paramaters

i8042.nomux=1
i8042.reset=1
i8042.noloop=1
i8042.kbdreset=1
i8042.nopnp=1
i8042.debug=1

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On 2017-05-05T09:05:12+00:00 rghvdberg wrote:

Created attachment 256221
dmesg

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On 2017-05-05T09:07:17+00:00 rghvdberg wrote:

Created attachment 256223
devices

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On 2017-09-19T13:37:32+00:00 nikolas wrote:

Can you attach the output of `udevadm info -e` run as root?

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On 2017-09-20T13:45:40+00:00 rghvdberg wrote:

NOTE : Currently on 4.9.48-1-MANJARO
output was too long so I pastebinned it

https://pastebin.com/HV6CRvFJ

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On 2019-02-25T14:50:08+00:00 vbatts wrote:

This is still not working on 4.16.3 and 4.20.8 on Fedora
reading on https://alpha-labs.net/2015/08/lenovo-s21e-linux-and-the-touchpad/
it looks like there had been a fix floated for the hid-rmi module.

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On 2019-02-25T15:26:19+00:00 vbatts wrote:

ah, sorry. This looks like an i2c elan touchpad issue. My apologies.
[vbatts@dhcp6-118 ~]$ dmesg | grep -i elan
[2.442191] i2c_hid i2c-ELAN0601:00: i2c-ELAN0601:00 supply vdd not found, 
using dummy regulator

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On 2019-02-25T19:52:30+00:00 vbatts wrote:

Created attachment 281341
add the ELAN0601 ID

this is the patch i've emailed to Duson Lin

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On 2019-02-25T19:54:10+00:00 vbatts wrote:

Confirmed the patch works on the Lenovo s21e-20 laptop with 5.0.0-rc8
kernel. Surely could be backported to other releases.

Duson's EMC email bounced. What subsystem should I mail this patch to

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** Changed in: linux
   Status: Unknown => Confirmed

** Changed in: linux
   Importance: Unknown => Medium

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Title:
  Touchpad not detected on Lenovo S21e-20

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[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

[Kai-Heng Feng]

** Also affects: linux via
   http://bugzilla.kernel.org/195669
   Importance: Unknown
   Status: Unknown

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Title:
  Touchpad not detected on Lenovo S21e-20

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[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

[Rob van den Berg]

Thanks,

I file a bug https://bugzilla.kernel.org/show_bug.cgi?id=195669

2017-05-05 7:10 GMT+02:00 Kai-Heng Feng :

> You need to file an upstream report then. It's at
> https://bugzilla.kernel.org/
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1686048
>
> Title:
>   Touchpad not detected on Lenovo S21e-20
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/
> 1686048/+subscriptions
>


** Bug watch added: Linux Kernel Bug Tracker #195669
   http://bugzilla.kernel.org/195669

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Title:
  Touchpad not detected on Lenovo S21e-20

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[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

[Kai-Heng Feng]

You need to file an upstream report then. It's at
https://bugzilla.kernel.org/

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Title:
  Touchpad not detected on Lenovo S21e-20

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Re: [Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

[Rob van den Berg]

I tested with the parameters one by one but it made no difference.
Touchpad isn't detected

2017-05-04 6:50 GMT+02:00 Kai-Heng Feng :

> Can you test these kernel parameter, one by one:
> i8042.nomux=1
> i8042.reset=1
> i8042.noloop=1
> i8042.kbdreset=1
> i8042.nopnp=1
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1686048
>
> Title:
>   Touchpad not detected on Lenovo S21e-20
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/
> 1686048/+subscriptions
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Title:
  Touchpad not detected on Lenovo S21e-20

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[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

[Kai-Heng Feng]

Can you test these kernel parameter, one by one:
i8042.nomux=1
i8042.reset=1
i8042.noloop=1
i8042.kbdreset=1
i8042.nopnp=1

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Title:
  Touchpad not detected on Lenovo S21e-20

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[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

[Rob van den Berg]

Mainline kernel didn't fix it.
Tagged and confirmed as per instructions

** Tags added: kernel-bug-exists-upstream

** Changed in: linux (Ubuntu)
   Status: Incomplete => Confirmed

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  Touchpad not detected on Lenovo S21e-20

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[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

[Rob van den Berg]

This is a brand new install.
I'll test the new kernel when I have time (in a few hours)

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Title:
  Touchpad not detected on Lenovo S21e-20

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[Bug 1686048] Re: Touchpad not detected on Lenovo S21e-20

[Joseph Salisbury]

Did this issue start happening after an update/upgrade?  Was there a
prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.11 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11-rc8

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
   Status: Confirmed => Incomplete

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Title:
  Touchpad not detected on Lenovo S21e-20

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