Kernel panic when plugging in/unplugging power cord

llc8 · 2012-06-02 15:00:39

Hello all,

My issue is that I sometimes get a kernel panic when I remove my power cord or plug it in to my laptop. I say "sometimes" because this only happens every once in a while and I cannot discern any specific circumstances that make it panic vs. not panic when the cord is plugged in or unplugged. I apologize that I cannot provide any specific error message; the kernel panic screen seems to me to be fairly generic (it lists some information about processes; as far as I can tell none of it actually describes what caused the panic) and I cannot find any errors in the system logs.
I have had this happen across multiple Kernel versions on the same laptop (Lenovo Ideapad z560).

System info:

uname -a:

Linux clap 3.3.7-1-ARCH #1 SMP PREEMPT Mon May 21 22:39:59 UTC 2012 i686 GNU/Linux

lspci:

00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 05)
00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 05)
00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 05)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 05)
05:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)

lsmod:

Module                  Size  Used by
fuse                   59284  2 
joydev                  7663  0 
uvcvideo               60797  0 
videobuf2_vmalloc       1736  1 uvcvideo
videobuf2_memops        1562  1 videobuf2_vmalloc
videobuf2_core         18103  1 uvcvideo
videodev               72205  1 uvcvideo
media                   8513  2 videodev,uvcvideo
btusb                  10047  0 
i915                  383758  8 
i2c_algo_bit            4583  1 i915
bluetooth             150114  1 btusb
drm_kms_helper         23303  1 i915
arc4                    1118  2 
drm                   166804  4 drm_kms_helper,i915
iwlwifi               222424  0 
mac80211              336883  1 iwlwifi
mei                    27639  0 
snd_hda_codec_hdmi     21760  1 
snd_hda_codec_conexant    39484  1 
i2c_i801                6992  0 
intel_agp               8688  1 i915
i2c_core               16845  6 i2c_i801,drm,drm_kms_helper,i2c_algo_bit,i915,videodev
cfg80211              153196  2 mac80211,iwlwifi
r8169                  41800  0 
intel_gtt              11193  3 intel_agp,i915
mii                     3439  1 r8169
snd_hda_intel          20112  5 
snd_hda_codec          79405  3 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec_hdmi
snd_pcm                60499  4 snd_hda_codec,snd_hda_intel,snd_hda_codec_hdmi
snd_page_alloc          5901  2 snd_pcm,snd_hda_intel
snd_hwdep               4970  1 snd_hda_codec
snd_timer              15158  1 snd_pcm
iTCO_wdt               10773  0 
iTCO_vendor_support     1545  1 iTCO_wdt
snd_mixer_oss          13088  0 
agpgart                22159  3 intel_gtt,intel_agp,drm
intel_ips               9923  0 
pcspkr                  1423  0 
serio_raw               3709  0 
psmouse                69902  0 
ideapad_laptop          7070  0 
sparse_keymap           2532  1 ideapad_laptop
evdev                   7310  9 
processor              23476  0 
snd                    45013  17 snd_mixer_oss,snd_timer,snd_hwdep,snd_pcm,snd_hda_codec,snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec_hdmi
thermal                 6563  0 
rfkill                 12600  3 ideapad_laptop,cfg80211,bluetooth
wmi                     7259  0 
battery                 5053  0 
video                   9819  1 i915
ac                      1796  0 
button                  3614  1 i915
soundcore               4986  1 snd
loop                   14979  0 
ext4                  384604  2 
crc16                   1091  2 ext4,bluetooth
jbd2                   60590  1 ext4
mbcache                 4345  1 ext4
aes_i586                6940  19 
cryptd                  7023  0 
aes_generic            26054  1 aes_i586
xts                     2441  8 
gf128mul                5982  1 xts
dm_crypt               13724  1 
dm_mod                 60658  3 dm_crypt
sr_mod                 13148  0 
cdrom                  30504  1 sr_mod
sd_mod                 25867  3 
ahci                   17689  2 
libahci                16783  1 ahci
ehci_hcd               38640  0 
libata                145743  2 libahci,ahci
scsi_mod              112765  3 libata,sd_mod,sr_mod
usbcore               122783  4 ehci_hcd,btusb,uvcvideo
usb_common               622  1 usbcore

Strike0 · 2012-06-02 18:59:58

It might be helpful if you add some information about what kind of power management you have installed (pm-utils, uswsusp,..), if any. Also which desktop you use and if any power-relevant daemons are in rc.conf (acpid?).
Maybe some bios options to set for cpu powermanagement?

llc8 · 2012-06-03 14:30:52

Really the only power management tool I use is something called batti which sits in the tray and shows charging state and such. No acpid, nothing in rc.conf regarding power tools at all. I use awesome window manager so there are no wm/de-specific applications at play.
I looked at my BIOS setup and cannot find anything which might affect this issue... the only thing there to do with power is a setting which makes the computer beep when the power state is changed.

It might also be worth noting that there is a potential problem with my laptop's PSU/battery. It won't charge past 78% (most of the time... sometimes it will charge fully. It's finicky.), but otherwise it works fine.

Strike0 · 2012-06-05 13:48:12

I read Lenovo did a recall of Ideapad Y560 for some Intel chipset 6(?) problem, but thats a different model is it?
Maybe un-/plug that cord repetitively and watch what happens in the logs (dmesg, kernel, Xorg, error).
Don't have a real other suggestion for you, sorry.

llc8 · 2012-06-07 01:43:33

I managed to snap an image after it panicked this last time: (sorry for the slight blurriness, but I think most of the text is legible)
Perhaps some of this is useful? Some of the text near the bottom mentions "error" and "acpi" which may be relevant, but I can't quite make sense of it all.

R00KIE · 2012-06-07 17:16:42

You might want to see if you have pm-utils installed, which may have been pulled as a dependency for another package. If you do try creating empty files in /etc/pm/power.d that match the ones in /usr/lib/pm-utils/power.d and see if that still happens.

llc8 · 2012-06-09 15:25:18

R00KIE wrote:

You might want to see if you have pm-utils installed, which may have been pulled as a dependency for another package. If you do try creating empty files in /etc/pm/power.d that match the ones in /usr/lib/pm-utils/power.d and see if that still happens.

This appears to have worked! I say "appears" because I can't really know if it will randomly panic again in the future, but as far as I've tested it, it has not panicked.
Thanks very much R00KIE and Strike0.

R00KIE · 2012-06-09 17:39:22

You should try to figure out which script is causing the problem, you never know when it will come in handy trying to figure out some related problem in the future.

Arch Linux

#1 2012-06-02 15:00:39

Kernel panic when plugging in/unplugging power cord

#2 2012-06-02 18:59:58

Re: Kernel panic when plugging in/unplugging power cord

#3 2012-06-03 14:30:52

Re: Kernel panic when plugging in/unplugging power cord

#4 2012-06-05 13:48:12

Re: Kernel panic when plugging in/unplugging power cord

#5 2012-06-07 01:43:33

Re: Kernel panic when plugging in/unplugging power cord

#6 2012-06-07 17:16:42

Re: Kernel panic when plugging in/unplugging power cord

#7 2012-06-09 15:25:18

Re: Kernel panic when plugging in/unplugging power cord

#8 2012-06-09 17:39:22

Re: Kernel panic when plugging in/unplugging power cord

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