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From: Thorsten Leemhuis <>
Subject: Re: [REGRESSION] Right touchpad button disabled on Dell 7750 #forregzbot
Date: Fri, 18 Mar 2022 15:47:23 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

TWIMC: this mail is primarily send for documentation purposes and for
regzbot, my Linux kernel regression tracking bot. These mails usually
contain '#forregzbot' in the subject, to make them easy to spot and filter.

Hi, this is your Linux kernel regression tracker. Top-posting for once,
to make this easily accessible to everyone.

Seems below regression soon will be getting fixed, but with the nearing
final I want to have this in the tracking to make sure everyone is aware
of it:

#regzbot ^introduced 37ef4c19b4c659926ce65
#regzbot title HID: multitouch: right touchpad button is disabled on
recent kernels
#regzbot ignore-activity
#regzbot link:

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)

P.S.: As the Linux kernel's regression tracker I'm getting a lot of
reports on my table. I can only look briefly into most of them and lack
knowledge about most of the areas they concern. I thus unfortunately
will sometimes get things wrong or miss something important. I hope
that's not the case here; if you think it is, don't hesitate to tell me
in a public reply, it's in everyone's interest to set the public record

On 18.03.22 12:42, Takashi Iwai wrote:
> Hi,
> we received a bug report about the regression of the touchpad on Dell
> 7750 laptop, the right touchpad button is disabled on recent kernels:
> Note that it's a physical button, not a virtual clickpad button.
> The regression seems introduced by the upstream commit
> 37ef4c19b4c659926ce65a7ac709ceaefb211c40 ("Input: clear
> BTN_RIGHT/MIDDLE on buttonpads") that was backported to stable 5.16.x
> kernel.
> The device is managed by hid-multitouch driver, and the further
> investigation revealed that it's rather an incorrectly recognized
> buttonpad property; namely, ID_DG_BUTTONTYPE reports it being 0 =
> clickable touchpad although it's not.  I built a test kernel to ignore
> this check and it was confirmed to make the right button working again
> by the reporter.
> Is this check really correct in general?  Or do we need some
> device-specific quirk?
> thanks,
> Takashi

      parent reply	other threads:[~2022-03-18 14:47 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-18 11:42 [REGRESSION] Right touchpad button disabled on Dell 7750 Takashi Iwai
2022-03-18 13:07 ` José Expósito
2022-03-18 13:11   ` Takashi Iwai
2022-03-18 14:06     ` Benjamin Tissoires
2022-03-18 14:28       ` José Expósito
2022-03-18 14:37       ` Takashi Iwai
2022-03-18 16:05         ` José Expósito
2022-03-18 22:01         ` [PATCH] HID: multitouch: fix Dell Precision 7550 and 7750 button type kernel test robot
2022-03-19  8:10       ` [REGRESSION] Right touchpad button disabled on Dell 7750 Takashi Iwai
2022-03-20 19:12         ` José Expósito
2022-03-18 14:47 ` Thorsten Leemhuis [this message]

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