** Description changed: Hi, Touchpad on my new Lenovo X1 Carbon (Gen12) with the Sensel haptic pad doesn't work on boot. I see this: | [Thu Apr 11 13:57:26 2024] i2c_hid_acpi i2c-SNSL0028:00: device did not ack reset within 1000 ms | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 | ... | [Thu Apr 11 13:57:26 2024] hid-generic 0018:2C2F:0028.0001: unbalanced collection at end of report description | [Thu Apr 11 13:57:26 2024] hid-generic: probe of 0018:2C2F:0028.0001 failed with error -22 Per the Arch Linux wiki page[1], removing and reloading the `i2c_hid_acpi` seems to fix it: | [Thu Apr 11 13:58:02 2024] i2c_hid_acpi i2c-SNSL0028:00: device did not ack reset within 1000 ms | [Thu Apr 11 13:58:02 2024] input: SNSL0028:00 2C2F:0028 Mouse as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-15/i2c-SNSL0028:00/0018:2C2F:0028.0002/input/input15 | [Thu Apr 11 13:58:02 2024] input: SNSL0028:00 2C2F:0028 Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-15/i2c-SNSL0028:00/0018:2C2F:0028.0002/input/input16 | [Thu Apr 11 13:58:02 2024] hid-multitouch 0018:2C2F:0028.0002: input,hidraw0: I2C HID v1.00 Mouse [SNSL0028:00 2C2F:0028] on i2c-SNSL0028:00 | [Thu Apr 11 13:58:03 2024] psmouse serio1: trackpoint: Synaptics TrackPoint firmware: 0x08, buttons: 3/3 | [Thu Apr 11 13:58:03 2024] input: TPPS/2 Synaptics TrackPoint as /devices/platform/i8042/serio1/input/input18 From that Arch Linux wiki page, it seems to be a bug upstream[2] with the commit fixing this: | https://github.com/torvalds/linux/commit/af93a167eda90192563bce64c4bb989836afac1f Or | https://lore.kernel.org/linux- input/20240331182440.14477-1...@kl.wtf/T/#u Can we get fix this backported? | [hloeung@dharkan tmp]$ apt-cache policy linux-image-generic-hwe-24.04 | linux-image-generic-hwe-24.04: | Installed: 6.8.0-22.22 | Candidate: 6.8.0-22.22 | Version table: | *** 6.8.0-22.22 500 | 500 http://haw-test.archive.ubuntu.com/ubuntu noble/main amd64 Packages | 100 /var/lib/dpkg/status | [hloeung@dharkan tmp]$ uname -a | Linux dharkan.local 6.8.0-22-generic #22-Ubuntu SMP PREEMPT_DYNAMIC Thu Apr 4 22:30:32 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux | [hloeung@dharkan tmp]$ Thanks, Haw [1]: https://wiki.archlinux.org/title/Lenovo_ThinkPad_Z16_Gen_2 [2]: https://bugzilla.redhat.com/show_bug.cgi?id=2271136 + + SRU Justification: + ============== + + [Impact] + Sensel haptic pad doesn't work on boot. + Error log: + i2c_hid_acpi i2c-SNSL0028:00: device did not ack reset within 1000 ms + hid-generic 0018:2C2F:0028.0001: unknown main item tag 0x0 + + [Fix] + This issue is a regression of commit from v6.8-rc1 : + commit: af93a167eda9 ("HID: i2c-hid: Move i2c_hid_finish_hwreset() to after reading the report-descriptor") + Fix commit: ea36bf1827462 ("HID: i2c-hid: Revert to await reset ACK before reading report descriptor") + + [Test] + Tested on hardware, touchpad works after boot. + + [Where problems could occur] + It may break HID input. + + It is a regression on 6.8-rc1, SRU for Noble only.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2061040 Title: I2C HID device sometimes fails to initialize causing touchpad to not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2061040/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
