Hi Mario,

at 21:25, [off-list ref] [off-list ref] wrote:

KH,

Just make sure I understand details.

quoted

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 there’s a better solution from ALPS :)

quoted

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,

quoted

-----Original Message-----
From: Kai-Heng Feng <redacted>
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 [off-list ref] wrote:

quoted

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?

It’s distro-agnostic, any distro with mainline Linux can reproduce the  
issue.

Kai-Heng

quoted

Best regards,
Jason

-----Original Message-----
From: 太田 真喜 Masaki Ota <redacted>
Sent: Wednesday, August 28, 2019 2:35 PM
To: 曹 曉建 Xiaojian Cao <redacted>; Kai-Heng Feng
[off-list ref]
Cc: Mario Limonciello <redacted>; open list:HID CORE
LAYER [off-list ref]; Linux Kernel Mailing List
[off-list ref]; 斉藤 直樹 Naoki Saito
[off-list ref]
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 <redacted>
Sent: Wednesday, August 28, 2019 3:22 PM
To: 太田 真喜 Masaki Ota <redacted>
Cc: Mario Limonciello <redacted>; open list:HID CORE
LAYER [off-list ref]; Linux Kernel Mailing List
[off-list ref]
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 resume” which solves
the same issue for other vendors, cause the issue on Alps touchpad.
So I’d like to know the correct command Alps touchpad expects after
system resume.

Also Cc Mario because this could relate to BIOS.

Kai-Heng