Public bug reported:

My computer freezes very, very frequently. I'm using 12.04.02  (32bit,
though my computer supports 64 bit, but I had freezes with that too),
I've had the same trouble on 12.04.01 and 12.10. I've used kernels 3.2,
3.5 and 3.8, all still have freezing. I'm not sure how to identify the
package causing the freezing, but not for a lack of trying.  If anyone
has any idea, I will cheerfully supply whatever info you need.  It's
been close to two months I think.  :P

When it freezes, the keys do not respond at all, making another tty or
using REISUB completely impossible.

It can happen anywhere from a few seconds to a few hours after a boot.
Usually while browsing, but that's because I'm usually browsing I think.

The only thing I can do is a hard reset.

I have tried to ssh into my computer from my wife's, but it is
impossible while frozen (note, it IS possible when my computer is not
frozen, so from what I have read, this indicates my error is not a GPU
hang, correct me if I am wrong :) )

Memtest shows no errors (memtest would not run, except for from a live
usb, but I got it covered.  No errors).

Happens in unity 2d and unity 3d, guessing it's not compiz.

No proprietary drivers either.

My computer is kept dust free, it is not overheating.

As per another report, I tried noapic and nomodeset, to no avail.
acpi=off too. :P acpi_apic_instance=2 did not work better either.

joe@Sutarmekeg:~$ lspci
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory 
Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 
Integrated Graphics Controller (primary) (rev 03)
00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated 
Graphics Controller (secondary) (rev 03)
00:1a.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #4 (rev 03)
00:1a.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #5 (rev 03)
00:1a.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI 
Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio 
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 
(rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 
(rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 
(rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 
(rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 
(rev 03)
00:1d.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #1 (rev 03)
00:1d.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #3 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI 
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HM (ICH8M) LPC Interface Controller 
(rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) IDE 
Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) SATA 
Controller [AHCI mode] (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8039 PCI-E Fast 
Ethernet Controller (rev 14)
03:00.0 Ethernet controller: Atheros Communications Inc. AR242x / AR542x 
Wireless Network Adapter (PCI-Express) (rev 01)
08:06.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
08:06.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 
1394 Host Controller
08:06.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card 
Reader (SD/MMC/MS/MS PRO/xD)
08:06.3 SD Host controller: Texas Instruments PCIxx12 SDA Standard Compliant SD 
Host Controller

>From my reading, I've been looking into this, but to no avail:

joe@Sutarmekeg:~$ sudo grep -i bug /var/log/syslog
Mar 12 09:09:04 Sutarmekeg kernel: [    0.000000] ACPI: BIOS bug: multiple 
APIC/MADT found, using 0
Mar 12 09:09:04 Sutarmekeg kernel: [    0.098980] [Firmware Bug]: ACPI: BIOS 
_OSI(Linux) query ignored
Mar 12 09:09:04 Sutarmekeg kernel: [    0.125307] PCI: Using host bridge 
windows from ACPI; if necessary, use "pci=nocrs" and report a bug
Mar 12 09:09:04 Sutarmekeg kernel: [    0.486860] ehci_hcd 0000:00:1a.7: debug 
port 1
Mar 12 09:09:04 Sutarmekeg kernel: [    0.500356] ehci_hcd 0000:00:1d.7: debug 
port 1
Mar 12 09:09:04 Sutarmekeg NetworkManager[746]: <info> Loaded plugin ifupdown: 
(C) 2008 Canonical Ltd.  To report bugs please use the NetworkManager mailing 
list.
Mar 12 09:09:04 Sutarmekeg NetworkManager[746]: <info> Loaded plugin keyfile: 
(c) 2007 - 2010 Red Hat, Inc.  To report bugs please use the NetworkManager 
mailing list.

Thanks gang.  I am a new Ubuntu user and I love it, despite this
grievous problem.

** Affects: ubuntu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1154006

Title:
  12.04 freezes many times daily

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