* 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
end of thread, other threads:[~2018-12-17 7:25 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 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
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