Bug#820013: general: Touchpad not working on Lenovo IdeaPad Yoga 13 after updating from 8.3 to 8.4
On 6 April 2016 at 00:32, Ben Hutchings <ben@decadent.org.uk> wrote:
> On Wed, 2016-04-06 at 00:22 +0100, Ben Hutchings wrote:
> [...]
>> But I also found this commit in 3.17:
>>
>> commit f79a901331a823ae370584b15cd39dd110b95a0a
>> Author: Hans de Goede <hdegoede@redhat.com>
>> Date: Fri Jul 18 12:21:47 2014 +0200
>>
>> ideapad-laptop: Disable touchpad interface on Yoga models
>>
>> Although it says 'disable touchpad interface', what it means is the
>> ideapad-laptop driver will ignore firmware events sayigng the touchpad
>> should be turned on or off (maybe based on rotation sensors in other
>> Ideapad models?). It started handling those events in 3.6, which fits
>> the earlier report.
>>
>> Have either of you tried a kernel version newer than 3.16?
>
> Sorry, that won't help - this commit was reverted as the feature was
> previously working properly for some Yoga models.
>
> Dmitri, can you test whether that cherry-picking that commit fixes this
> for you?
I can try that yes.
So yoga 13 non-pro, has a few things
- normal touchpad which with up to date kernels doesn't come up on
boot, until psmouse is reloaded
- touchscreen which appears as a tablet input interface or some such
- and magic key-codes
Magic key-codes, send a key code every 2s or some such to indicate
laptop unfold angle, such that when it's beyond 180 open the keycodes
spam stops and thus OS should turn off keyboard and touchpad because
it's now in "tablet" mode. It folds all the way out.
Stuff has changed in yoga 13 pro models, cause things did stop working
on non-pro after pro-specific model/quick/modules things were merged.
But i believe pro revision did things differently.
--
Regards,
Dimitri.
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