Public bug reported:
After upgrading to 26.10 with 7.3.0-9 kernel, the touchpad of my Dell
Latitude 5430 with BIOS 1.40.0 stops working. Manually binding and
unbinding produces
i2c_hid_acpi i2c-VEN_0488:00: device did not ack reset within 1000 ms
It seems that the touchpads vendor is Cirque Corporation.
I: Bus=0018 Vendor=0488 Product=101a Version=0100
N: Name="VEN_0488:00 0488:101A Mouse"
P: Phys=i2c-VEN_0488:00
S:
Sysfs=/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-1/i2c-VEN_0488:00/0018:0488:101A.0001/input/input9
U: Uniq=
H: Handlers=mouse0 event4
B: PROP=0
B: EV=17
B: KEY=70000 0 0 0 0
B: REL=903
B: MSC=10
I: Bus=0018 Vendor=0488 Product=101a Version=0100
N: Name="VEN_0488:00 0488:101A Touchpad"
P: Phys=i2c-VEN_0488:00
S:
Sysfs=/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-1/i2c-VEN_0488:00/0018:0488:101A.0001/input/input10
U: Uniq=
H: Handlers=mouse1 event5
B: PROP=5
B: EV=1b
B: KEY=e520 10000 0 0 0 0
B: ABS=2e0800000000003
B: MSC=20
Fix 1:
There is an easy fix, adding i2c_hid.polling_mode=1 to the kernel
command line:
edit /etc/default/grub
Add/replace "GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i2c_hid.polling_mode=1""
update-grub
reboot
However my understanding is, that this disables interrupt mode for the
device and enables constant polling at the cost of higher power
consumption? I briefly checked powertop and havent found any noticeable
sign of that.
Fix 2:
Booting 7.0.0-x from 26.04 also makes it work.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "version.log"
https://bugs.launchpad.net/bugs/2171519/+attachment/6011053/+files/version.log
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https://bugs.launchpad.net/bugs/2171519
Title:
i2c_hid_acpi i2c-VEN_0488:00: device did not ack reset within 1000 ms
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