Bug#1012655: Macbook Pro touchpad not working with kernel 5.18

Stephan Verbücheln

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Jun 11, 2022, 3:00:02 AM6/11/22

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Package: src:linux
Version: 5.18.2-1

The touchpad on my 2014 Macbook (MacBookPro11,1) is no longer working
since kernel 5.18 was installed. This affects both X11 and Wayland. I
am using Sid with Gnome.

When booting back into kernel 5.17, the touchpad works without
problems. That's why I suspect the bug to be in the kernel.

Keyboard is working without problems. keyboard and trackpad appear to
be one single device.

External USB mouse is working without problems.

# lsusb
Bus 001 Device 003: ID 05ac:0259 Apple, Inc. Internal Keyboard/Trackpad

# lshw
description: Keyboard
product: bcm5974
vendor: Apple Inc.

Regards

Stephan Verbücheln

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Jun 11, 2022, 3:40:02 AM6/11/22

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When I filed the bug, I could not find any other reports. Now I found
an upstream report which has matching symptoms.

https://bugzilla.kernel.org/show_bug.cgi?id=215890

However, there is confusion about the resolution. One reply states that
it was resolved in 5.18.0, but other replies talk about accidental
fixes.

A fix was submitted more recently than 5.18.0 release:
https://lore.kernel.org/all/20220606113636.588...@linux.intel.com/

Regards

Debian Bug Tracking System

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Jun 11, 2022, 6:10:03 AM6/11/22

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Processing control commands:

> tag -1 fixed-upstream
Bug #1012655 [src:linux] Macbook Pro touchpad not working with kernel 5.18
Added tag(s) fixed-upstream.

--
1012655: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1012655
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems

Diederik de Haas

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Jun 11, 2022, 6:10:03 AM6/11/22

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Control: tag -1 fixed-upstream

On Saturday, 11 June 2022 09:33:09 CEST Stephan Verbücheln wrote:
> I found an upstream report which has matching symptoms.
>
> https://bugzilla.kernel.org/show_bug.cgi?id=215890
>
> However, there is confusion about the resolution. One reply states that
> it was resolved in 5.18.0, but other replies talk about accidental fixes.
>
> A fix was submitted more recently than 5.18.0 release:
> https://lore.kernel.org/all/20220606113636.588...@linux.inte
> l.com/

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c42e65664390be7c1ef3838cd84956d3a2739d60
is where it is fixed. But there is indeed some confusion as noted by Linus:
https://lore.kernel.org/all/CAHk-=wjcC15LsPS1Nj-e5nC-hR3...@mail.gmail.com/

I normally use https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
and if you search for the primary commit message, it doesn't find it.
If you add "commit/?id=c42e65664390be7c1ef3838cd84956d3a2739d60" to that base
URL, you'll see "Notice: this object is not reachable from any branch."

So it is fixed upstream and according to Linus it is also part of 5.19-rc1
Apparently it's considered an important fix, so I guess it should be backported
to 5.18 'shortly'.

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Stephan Verbücheln

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Jun 12, 2022, 2:20:02 AM6/12/22

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They merged it (on June 7) into kernel 5.19, but kernel 5.18.3
(released June 9) does not seem to have it yet.

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/diff/?id=v5.18.3&id2=v5.18&dt=2

I will just use 5.17 or external mouse until the fix lands in Sid.

Thank you and regards

Stephan Verbücheln

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Jun 15, 2022, 11:50:02 AM6/15/22

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Kernel 5.18.4 got the patch.

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/diff/drivers/input/mouse/bcm5974.c?id=v5.18.4&id2=v5.18.3

Regards

Diederik de Haas

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Jun 15, 2022, 2:10:03 PM6/15/22

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Excellent, thanks for mentioning that :-)

> I will just use 5.17 or external mouse until the fix lands in Sid.

My guess is that the next upload to Sid should have it then.

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Salvatore Bonaccorso

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Jun 15, 2022, 4:00:03 PM6/15/22

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Hi,

This assumption is correct :)

Regards,
Salvatore

Debian Bug Tracking System

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Jun 17, 2022, 5:10:07 AM6/17/22

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Your message dated Fri, 17 Jun 2022 09:00:08 +0000
with message-id <E1o27po-...@fasolo.debian.org>
and subject line Bug#1012655: fixed in linux 5.18.5-1
has caused the Debian Bug report #1012655,
regarding Macbook Pro touchpad not working with kernel 5.18
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact ow...@bugs.debian.org
immediately.)