[Bug 191137] Re: [Hardy] ACPI Embedded Controller (EC) stops boot when kernel boot 'quiet' option is enabled or AC power is connected

[neffets]

hp pavilion dv6500
Booting with kernel options:

without ac-power it hangs too
  after ac-power-button press (or wlan-button change) it boots further
  and hangs then later

[   25.334075] ACPI: Battery Slot [BAT0] (battery present)
[   25.335892] ACPI: WMI: Mapper loaded
[   25.603699] ACPI: device:25 is registered as cooling_device2
[   25.603699] input: Video Bus as /class/input/input7
[   25.651769] ACPI: Video Device [UVGA] (multi-head: yes  rom: no  post: no)
[   25.714598] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[   25.908925] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[   26.165161] ricoh-mmc: Ricoh MMC Controller disabling driver
[   26.166967] ricoh-mmc: Copyright(c) Philip Langdale
[   26.169028] ricoh-mmc: Ricoh MMC controller found at 0000:02:05.2 [1180:0843] (rev 12)
[   26.169047] ricoh-mmc: Controller is now disabled.
[   26.230659] input: PC Speaker as /class/input/input8
[  175.522250] BUG: soft lockup - CPU#1 stuck for 140s! [swapper:0]
[  175.522250] Modules linked in: pcspkr(+) soundcore ricoh_mmc mmc_core k8temp shpchp pci_hotplug video output wmi battery ac button evdev ext3 jbd mbcache sg sr_mod sd_mod cdrom ata_generic pata_acpi usbhid hid pata_amd ahci ssb libata ohci1394 ehci_hcd ohci_hcd ieee1394 scsi_mod forcedeth dock usbcore thermal processor fan fuse
[  175.522250] 
[  175.522250] Pid: 0, comm: swapper Not tainted (2.6.26-20080716 #2)
[  175.522250] EIP: 0060:[<c01176a2>] EFLAGS: 00000246 CPU: 1
[  175.522250] EIP is at native_safe_halt+0x2/0x10


175.52... then I re-connected the ac-power chord into the laptop

** Attachment added: "DMESG2.txt"
   http://launchpadlibrarian.net/16313400/DMESG2.txt

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[Hardy] ACPI Embedded Controller (EC) stops boot when kernel boot 'quiet' option is enabled or AC power is connected
https://bugs.launchpad.net/bugs/191137
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