Re: Alps touchpad generates IRQ storm after S3

[Kai-Heng Feng]

Hi Mario,

at 21:25, <Mario.Limonciello@xxxxxxxx> <Mario.Limonciello@xxxxxxxx> wrote:

> KH,
>
> Just make sure I understand details.
>
> > Commit "HID: i2c-hid: Don't reset device upon system resume
>
> If you revert this it's fixed on this system?

Yes. Once reset is used instead of  the issue is gone.

> In that commit you had mentioned if this causes problems it might be worth
> quirking just Raydium but commit afbb1169ed5b58cfca017e368b53e019cf285853
> confirmed that it helped several other systems too.
>
> If the conclusion from this investigation this is only fixable via  
> touchpad FW update
> it might be worth quirking this touchpad/touchpad FW/system combination.

Hopefully thereâs a better solution from ALPS :)

> > Also Cc Mario because this could relate to BIOS.
>
> Also I assume this is on current stable BIOS/EC release, right?

Yes. The BIOS version is 1.10.1.

The IRQ storm stops as soon as the touchpad gets touched.

Kai-Heng

> Thanks,
>
> > -----Original Message-----
> > From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
> > Sent: Wednesday, August 28, 2019 1:58 AM
> > To: Xiaojian Cao
> > Cc: Masaki Ota; Limonciello, Mario; open list:HID CORE LAYER; Linux Kernel
> > Mailing List; Naoki Saito
> > Subject: Re: Alps touchpad generates IRQ storm after S3
> >
> >
> > [EXTERNAL EMAIL]
> >
> > Hi Xiaojian,
> >
> > at 14:51, Xiaojian Cao <xiaojian.cao@xxxxxxxxxxx> wrote:
> >
> > > Hi Ota-san,
> > >
> > > OK, we will look into it.
> > >
> > >
> > > Hi Kai-Heng,
> > >
> > > We will try to reproduce this issue first, could you please tell me the
> > > target Ubuntu version?
> >
> > Itâs distro-agnostic, any distro with mainline Linux can reproduce the  
> > issue.
> >
> > Kai-Heng
> >
> > > Best regards,
> > > Jason
> > >
> > > -----Original Message-----
> > > From: åç çå Masaki Ota <masaki.ota@xxxxxxxxxxxxxx>
> > > Sent: Wednesday, August 28, 2019 2:35 PM
> > > To: æ æå Xiaojian Cao <xiaojian.cao@xxxxxxxxxxx>; Kai-Heng Feng
> > > <kai.heng.feng@xxxxxxxxxxxxx>
> > > Cc: Mario Limonciello <mario.limonciello@xxxxxxxx>; open list:HID CORE
> > > LAYER <linux-input@xxxxxxxxxxxxxxx>; Linux Kernel Mailing List
> > > <linux-kernel@xxxxxxxxxxxxxxx>; æè çæ Naoki Saito
> > > <naoki.saito@xxxxxxxxxxxxxx>
> > > Subject: RE: Alps touchpad generates IRQ storm after S3
> > >
> > > Hi, Kai-Heng,
> > >
> > > Sorry, I'm not in charge of Linux task now.
> > >
> > > Hi, XiaoJian,
> > >
> > > Please check the following mail.
> > > If you have any question, please ask Kai-Heng.
> > >
> > > Best Regards,
> > > Masaki Ota
> > > -----Original Message-----
> > > From: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
> > > Sent: Wednesday, August 28, 2019 3:22 PM
> > > To: åç çå Masaki Ota <masaki.ota@xxxxxxxxxxxxxx>
> > > Cc: Mario Limonciello <mario.limonciello@xxxxxxxx>; open list:HID CORE
> > > LAYER <linux-input@xxxxxxxxxxxxxxx>; Linux Kernel Mailing List
> > > <linux-kernel@xxxxxxxxxxxxxxx>
> > > Subject: Alps touchpad generates IRQ storm after S3
> > >
> > > Hi Masaki,
> > >
> > > The Alps touchpad (044E:1220) on Dell Precision 7530 causes IRQ storm
> > > after system suspend (S3).
> > > Commit "HID: i2c-hid: Don't reset device upon system resumeâ which solves
> > > the same issue for other vendors, cause the issue on Alps touchpad.
> > > So Iâd like to know the correct command Alps touchpad expects after
> > > system resume.
> > >
> > > Also Cc Mario because this could relate to BIOS.
> > >
> > > Kai-Heng