Thread (5 messages) 5 messages, 2 authors, 2024-05-22

Re: BUG: Framework Laptop 16 i2c-hid Based Touchpad Sometimes Fails To Initialize Properly On Early Boot

From: Linux regression tracking (Thorsten Leemhuis) <hidden>
Date: 2024-05-21 10:57:08
Also in: regressions

On 14.05.24 04:57, Arazil Songweaver wrote:
We are experiencing an issue where the touch pad on the Framework Laptop
16 fails to initialize properly when the "i2c-hid" is loaded early in
the boot process. This issue is especially prominent when "i2c-hid" is
built directly into the kernel. When the "i2c-hid" module is built in,
the issue occurs roughly 50% of the time.
(https://community.frame.work/t/touchpad-not-working-since-update-archlinux/50304) Moving the module load to later in the boot process appears to resolve this issue by making initialization more likely to succeed. (https://gitlab.archlinux.org/archlinux/mkinitcpio/mkinitcpio/-/releases/v39.1)

Kernel version: Linux artemis 6.9.0-1-git-01560-ga7c840ba5fa7 #1 SMP
PREEMPT_DYNAMIC Tue, 14 May 2024 01:49:25 +0000 x86_64 GNU/Linux

I'm using the standard Arch Linux AUR "linux-git" package with the
following kernel configuration changes:

CONFIG_I2C_DEBUG_CORE=y
CONFIG_I2C_DEBUG_ALGO=y
CONFIG_I2C_DEBUG_BUS=y
CONFIG_I2C_HID=y
CONFIG_I2C_HID_ACPI=y
CONFIG_I2C_HID_OF=y
CONFIG_I2C_HID_CORE=y

We tried reverting the following patches without any behavior impact
(good or bad):

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.8.y&id=fb49deec375aa5beca4a5d71d7a74ec951872f28

https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.8.y&id=418c5575d56410c6e186ab727bf32ae32447d497

Impacted devices seem to include: "PIXA3854:00" and "i2c_designware
AMDI0010:03"
Any news on this? If this is still unresolved I'll bring this to the
attention of the right developer, if this is a recent regressions (it
sounds like it, but it's not exactly clear; and from the first link
above it sounds like it's partly due to a change in arch's approach to
the initramfs).

Ciao, Thorsten
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