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Date:	Sat, 29 Dec 2012 12:03:13 -0800
From:	Tim Hockin <>
Cc:, Pavel Machek <>
Subject: kernel panic on resume from S3 - stumped

4 days ago I had Ubuntu Lucid running on this computer. Suspend and
resume worked flawlessly every time.

Then I upgraded to Ubuntu Precise. Suspend seems to work, but resume
fails every time. The video never initializes.  By the flashing
keyboard lights, I guess it's a kernel panic. It fails from the Live
CD and from a fresh install.

Here is my debug so far.

Install all updates (3.2 kernel, nouveau driver)
Try suspend = fails

Install Ubuntu's linux-generic-lts-quantal (3.5 kernel, nouveau driver)
Try suspend = fails

Install nVidia's 304 driver
Try suspend = fails

>From within X:
  echo core > /sys/power/pm_test
  echo mem > /sys/power/state
The system acts like it is going to sleep, and then wakes up a few
seconds later. dmesg shows:

[ 1230.083404] ------------[ cut here ]------------
[ 1230.083410] WARNING: at
[ 1230.083411] Hardware name: To Be Filled By O.E.M.
[ 1230.083412] Component: resume devices, time: 14424
[ 1230.083412] Modules linked in: snd_emu10k1_synth snd_emux_synth
snd_seq_virmidi snd_seq_midi_emul bnep rfcomm parport_pc ppdev
nvidia(PO) snd_emu10k1 snd_ac97_codec ac97_bus snd_pcm snd_page_alloc
snd_util_mem snd_hwdep snd_seq_midi snd_rawmidi snd_seq_midi_event
snd_seq snd_timer coretemp snd_seq_device kvm_intel kvm snd
ghash_clmulni_intel soundcore aesni_intel btusb cryptd aes_x86_64
bluetooth i7core_edac edac_core microcode mac_hid lpc_ich mxm_wmi
shpchp serio_raw wmi hid_generic lp parport usbhid hid r8169
[ 1230.083445] Pid: 3329, comm: bash Tainted: P O 3.5.0-21-generic
[ 1230.083446] Call Trace:
[ 1230.083448] [<ffffffff81052c9f>] warn_slowpath_common+0x7f/0xc0
[ 1230.083452] [<ffffffff81052d96>] warn_slowpath_fmt+0x46/0x50
[ 1230.083455] [<ffffffff8109b836>] suspend_test_finish+0x86/0x90
[ 1230.083457] [<ffffffff8109b53b>] suspend_devices_and_enter+0x10b/0x200
[ 1230.083460] [<ffffffff8109b701>] enter_state+0xd1/0x100
[ 1230.083463] [<ffffffff8109b74b>] pm_suspend+0x1b/0x60
[ 1230.083465] [<ffffffff8109a7a5>] state_store+0x45/0x70
[ 1230.083467] [<ffffffff81331d2f>] kobj_attr_store+0xf/0x30
[ 1230.083471] [<ffffffff811f77ff>] sysfs_write_file+0xef/0x170
[ 1230.083476] [<ffffffff811879d3>] vfs_write+0xb3/0x180
[ 1230.083480] [<ffffffff81187cfa>] sys_write+0x4a/0x90
[ 1230.083483] [<ffffffff816a6e69>] system_call_fastpath+0x16/0x1b
[ 1230.083488] ---[ end trace 839cdd0078b3ce03 ]---

Boot with init=/bin/bash
unload all modules except USBHID
echo core > /sys/power/pm_test
echo mem > /sys/power/state
system acts like it is going to sleep, and then wakes up a few seconds later
echo none > /sys/power/pm_test
echo mem > /sys/power/state
system goes to sleep
press power to resume = fails

At this point I am stumped on how to debug. This is a "modern"
computer with no serial ports. It worked under Lucid, so I know it is

Mobo: ASRock X58 single-socket
CPU: Westmere 6 core (12 hyperthreads) 3.2 GHz
Disk: sda = Intel SSD, mounted on /
Disk: sdb = Intel SSD, not mounted
Disk: sdc = Seagate HDD, not mounted
Disk: sdd = Seagate HDD, not mounted
NIC = Onboard RTL8168e/8111e
Sound = EMU1212 (emu10k1, not even configured yet)
Video = nVidia GeForce 7600 GT
KB = PS2 (also tried USB)
Mouse = USB

I have not updated to a more current kernel than 3.5, but I will if
there's evidence that this is resolved.  Any other clever trick to

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