Hi,
I had a Thomson X6 notebook, it's seems to be a Jumper Ebook 3 Pro
rebranded.
I compiled original kernel from kernel.org.
- With 4.14 RC7 version, movements, simple ou double tab click, 2 finger
gesture worked. But click buttons not.
- With 4.14 RC8 version, nothing works anymore ! I did some investigations.
I copied the "drivers/base" files from 4.14 RC7 to 4.14 RC8. I compiled the
custom kernel... and it works again (except click buttons).
- I did the same thing with the latest version currently available (4.14.41), I
had the same behavior.
- With 4.16 version, after startup/reboot, the touchpad is recognized in log
(dmesg) but it's not work. So, if I suspend and resume, gestures and even
buttons are working !
- From my 4.14.41 version already patched ("drivers/base" files from 4.14 RC7),
I copied "drivers/hid" and "drivers/input" files from 4.16.
Now, everything works : gesture and buttons after a first startup and after
suspend/resume.
I don't know if "drivers/input" files modifications are really necessary, I
will do a rollback and test later.
Obviously, I can't compile kernel if I replace files without minor
modifications.
I analyzed the code changes (drivers/base) between the 4.14 RC7 and 4.14 RC8
versions. There are only a few lines that have been modified.
So I made the reverse modifications in version 4.16, but without success.
Touchpad is still not work after startup/reboot but works only after
suspend/resume.
In all versions (4.14 RC7 original, 4.14 RC8 and 4.14.41 modified, 4.16
original), I still have error messages :
[ 6.326589] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report
(32/261)
[ 6.328725] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report
(32/8713)
[ 6.329796] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report
(32/261)
[ 6.333024] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report
(32/23334)
[ 6.334090] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report
(32/20745)
[ 6.337295] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report
(32/31302)
[ 6.338385] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report
(32/29952)
[ 6.342743] i2c_hid i2c-SYNA3602:00: i2c_hid_get_input: incomplete report
(32/22281)
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https://bugs.launchpad.net/bugs/1728244
Title:
Touchpad stops working after reboot on Apollo Lake
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