Bug 65751

Summary:	ideapad-laptop.c stange error message
Product:	Drivers	Reporter:	chr-voigt
Component:	Platform_x86	Assignee:	drivers_platform_x86 (drivers_platform_x86)
Status:	NEW ---
Severity:	normal	CC:	alan, mhwalker
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	3.13.0-999	Subsystem:
Regression:	No	Bisected commit-id:

Description chr-voigt 2013-11-25 16:25:27 UTC

Kernel module ideapad_laptop causes strange error messages while running on battery. This error message doesn't occur, when I plug in the power supply. 

Nov 25 17:03:59 notebook kernel: [ 4691.521342] ideapad_laptop: Unknown event: 1
Nov 25 17:04:21 notebook kernel: [ 4712.748122] ideapad_laptop: Unknown event: 1
Nov 25 17:04:42 notebook kernel: [ 4734.011306] ideapad_laptop: Unknown event: 1
Nov 25 17:05:03 notebook kernel: [ 4755.206006] ideapad_laptop: Unknown event: 1
Nov 25 17:05:24 notebook kernel: [ 4776.419245] ideapad_laptop: Unknown event: 1
Nov 25 17:05:46 notebook kernel: [ 4797.612779] ideapad_laptop: Unknown event: 1
Nov 25 17:06:07 notebook kernel: [ 4818.780326] ideapad_laptop: Unknown event: 1
Nov 25 17:06:28 notebook kernel: [ 4840.004221] ideapad_laptop: Unknown event: 1

Lenovo U330p
Ubuntu 13.10.
latest (today) available mainline kernel 3.13.0-999-generic

The problem also occurs while using older kernel versions.

Comment 1 Mike Walker 2014-11-21 07:34:43 UTC

I can confirm that this problem also occurs using newer kernels too. 

Nov 20 23:27:04 arch-laptop kernel: ideapad_laptop: Unknown event: 1
Nov 20 23:27:25 arch-laptop kernel: ideapad_laptop: Unknown event: 1
Nov 20 23:27:46 arch-laptop kernel: ideapad_laptop: Unknown event: 1
Nov 20 23:28:07 arch-laptop kernel: ideapad_laptop: Unknown event: 1
Nov 20 23:28:29 arch-laptop kernel: ideapad_laptop: Unknown event: 1
Nov 20 23:28:50 arch-laptop kernel: ideapad_laptop: Unknown event: 1
Nov 20 23:29:11 arch-laptop kernel: ideapad_laptop: Unknown event: 1

The laptop model is different but the problem is exactly the same using the kernel 3.17.3-1-ARCH.

Lenovo U530
Arch Linux