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.
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