* Elantech SMBus support regression
@ 2018-11-22 4:21 Kai Heng Feng
2018-12-12 14:25 ` Benjamin Tissoires
0 siblings, 1 reply; 3+ messages in thread
From: Kai Heng Feng @ 2018-11-22 4:21 UTC (permalink / raw)
To: Benjamin Tissoires; +Cc: open list:HID CORE LAYER, Linux Kernel Mailing List
Hi Benjamin,
It appears the Elantech SMBus support breaks some users’ touchpad.
Please have a look at [1] [2], thanks!
[1] https://bugs.launchpad.net/bugs/1803600
[2] https://bugs.archlinux.org/task/59714
Kai-Heng
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Elantech SMBus support regression
2018-11-22 4:21 Elantech SMBus support regression Kai Heng Feng
@ 2018-12-12 14:25 ` Benjamin Tissoires
2018-12-17 7:25 ` Kai Heng Feng
0 siblings, 1 reply; 3+ messages in thread
From: Benjamin Tissoires @ 2018-12-12 14:25 UTC (permalink / raw)
To: Kai Heng Feng, Dmitry Torokhov; +Cc: open list:HID CORE LAYER, lkml
Hi,
sorry for the late reply. I was always meaning to fix this the proper
way but couldn't dedicate a full day of work to go to the bottom of
elan_i2c.
Meanwhile, I am thinking at simply having a blacklist of devices that
we know are not working well (P52, L480, L580 and P72).
Could you get the value of /sys/bus/serio/devices/serio1/firmware_id
from all of these laptops?
I know the P52 is LEN2131, but I don't seem to find the other PNPIds.
Cheers,
Benjamin
On Thu, Nov 22, 2018 at 5:22 AM Kai Heng Feng
<kai.heng.feng@canonical.com> wrote:
>
> Hi Benjamin,
>
> It appears the Elantech SMBus support breaks some users’ touchpad.
>
> Please have a look at [1] [2], thanks!
>
> [1] https://bugs.launchpad.net/bugs/1803600
> [2] https://bugs.archlinux.org/task/59714
>
> Kai-Heng
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Elantech SMBus support regression
2018-12-12 14:25 ` Benjamin Tissoires
@ 2018-12-17 7:25 ` Kai Heng Feng
0 siblings, 0 replies; 3+ messages in thread
From: Kai Heng Feng @ 2018-12-17 7:25 UTC (permalink / raw)
To: Benjamin Tissoires; +Cc: Dmitry Torokhov, open list:HID CORE LAYER, lkml
Hi,
> On Dec 12, 2018, at 22:25, Benjamin Tissoires <benjamin.tissoires@redhat.com> wrote:
>
> Hi,
>
> sorry for the late reply. I was always meaning to fix this the proper
> way but couldn't dedicate a full day of work to go to the bottom of
> elan_i2c.
>
> Meanwhile, I am thinking at simply having a blacklist of devices that
> we know are not working well (P52, L480, L580 and P72).
>
> Could you get the value of /sys/bus/serio/devices/serio1/firmware_id
> from all of these laptops?
> I know the P52 is LEN2131, but I don't seem to find the other PNPIds.
These are feedbacks from the users:
L480:
cat /sys/bus/serio/devices/serio1/firmware_id
PNP: LEN2036 PNP0f13
P52:
"cat /sys/bus/serio/devices/serio1/firmware_id":
PNP: LEN2132 PNP0f13
So looks like it’s different to LEN2131.
Kai-Heng
>
> Cheers,
> Benjamin
>
> On Thu, Nov 22, 2018 at 5:22 AM Kai Heng Feng
> <kai.heng.feng@canonical.com> wrote:
>>
>> Hi Benjamin,
>>
>> It appears the Elantech SMBus support breaks some users’ touchpad.
>>
>> Please have a look at [1] [2], thanks!
>>
>> [1] https://bugs.launchpad.net/bugs/1803600
>> [2] https://bugs.archlinux.org/task/59714
>>
>> Kai-Heng
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-12-12 14:25 ` Benjamin Tissoires
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