https://bugzilla.kernel.org/show_bug.cgi?id=48101
--- Comment #27 from fpgahardwareengineer <mypersonalmailb...@mail.com>
2013-01-01 09:48:17 ---
Hi,
I have not updated this bug report for a while because I didn't have access to
this mainboard for 4 months.
I gave ASUS P5N-E SLI mainboard to my parents for use as a Ubuntu computer.
I am visiting them now and I will have access to this computer for 10 more
days.
I upgraded this computer with a brand new, good looking computer case,
Intel Core 2 Duo E8500 (3.16 GHz, Wolfdale), and 2 GB X 2 DDR2-667 DDR2 SDRAM.
Anyway, if anyone has followed this bug report, the bug it has is very similar
to Bug 47991.
https://bugzilla.kernel.org/show_bug.cgi?id=47991
Bug 47991 is a bug where ASUS P4S8X-MX mainboard (SiS 661GX and SiS 964) and
ASUS P4S8X mainboard (SiS 648 and SiS 963) will cause an instant wakeup from
ACPI S3 State if USB 1.x devices are connected.
The only known workaround of this bug right now is to disable wakeup via
Terminal.
cat /proc/acpi/wakeup
See the names of USB devices.
Typically it will be called USB, USB0, USB1, USB2, etc., and it depends on the
mainboard.
For ASUS P5N-E SLI mainboard, it should look like this.
Device S-state Status Sysfs node
HUB0 S5 *disabled pci:0000:00:10.0
XVRA S5 *disabled pci:0000:00:03.0
XVRB S5 *disabled
XVRC S5 *disabled
XVRD S5 *disabled pci:0000:00:07.0
UAR1 S5 *disabled pnp:00:08
PS2M S4 *disabled pnp:00:0a
PS2K S4 *enabled pnp:00:0b
USB0 S4 *enabled pci:0000:00:0b.0
USB2 S4 *enabled pci:0000:00:0b.1
AZAD S5 *disabled pci:0000:00:10.1
MMAC S5 *disabled pci:0000:00:14.0
MMCI S5 *disabled
Now run this.
sudo sh -c "echo USB0 > /proc/acpi/wakeup"
sudo sh -c "echo USB2 > /proc/acpi/wakeup"
All this will suppress the ACPI S3 State resume issue for now.
USB 2.0 devices like most USB storage sticks manufactured recently are not
affected by this bug.
I have done some testing of ACPI S3 State resume on ASUS P5N-E SLI
mainboard, and here is the test results.
____________________________________________________________________________
Equipment:
PS/2 Keyboard: emachines 5143 (from emachines T2984 desktop computer)
PS/2 Mouse: Sysgration Ltd. SAGM002 (from emachines T2984 desktop computer)
USB Keyboard: Dell SK-8115
USB Mouse: Logitech M-UAE96 (optical)
USB Storage Stick: Patriot Memory SNIP 16 GB
Experiment:
(1)
USB Emulation: Disabled
Keyboard: PS/2 keyboard
Mouse: PS/2 mouse
USB Storage Stick: No
ACPI S3 State entry: Successful
ACPI S3 State resume: Successful
ACPI S3 State resume reliability: Good
(2)
USB Emulation: Disabled
Keyboard: USB keyboard
Mouse: USB mouse
USB Storage Stick: No
ACPI S3 State entry: Successful
ACPI S3 State resume: Instant Wakeup
ACPI S3 State resume reliability: Good
Note: 'sudo sh -c "echo USB0 > /proc/acpi/wakeup"' and 'sudo sh -c "echo USB2 >
/proc/acpi/wakeup"' suppresses the ACPI S3 State wakeup bug.
(3)
USB Emulation: Enabled
Keyboard: PS/2 keyboard
Mouse: PS/2 mouse
USB Storage Stick: No
ACPI S3 State entry: Failure (Freeze; Ubuntu bootup screen freezes.)
ACPI S3 State resume: Failure (obviously)
ACPI S3 State resume reliability: Failure (obviously)
(4)
USB Emulation: Enabled
Keyboard: USB keyboard
Mouse: USB mouse
USB Storage Stick: No
ACPI S3 State entry: Failure (Freeze; Ubuntu bootup screen freezes.)
ACPI S3 State resume: Failure (obviously)
ACPI S3 State resume reliability: Failure (obviously)
(5)
USB Emulation: Disabled
Keyboard: PS/2 keyboard
Mouse: PS/2 mouse, USB mouse
USB Storage Stick: No
ACPI S3 State entry: Successful
ACPI S3 State resume: Instant Wakeup
ACPI S3 State resume reliability: Failure
(6)
USB Emulation: Disabled
Keyboard: PS/2 keyboard, USB keyboard
Mouse: PS/2 mouse, USB mouse
USB Storage Stick: No
ACPI S3 State entry: Successful
ACPI S3 State resume: Instant Wakeup
ACPI S3 State resume reliability: Good
Note: 'sudo sh -c "echo USB0 > /proc/acpi/wakeup"' and 'sudo sh -c "echo USB2 >
/proc/acpi/wakeup"' suppresses the ACPI S3 State wakeup bug.
(7)
USB Emulation: Disabled
Keyboard: PS/2 keyboard
Mouse: PS/2 mouse
USB Storage Stick: Yes
ACPI S3 State entry: Successful
ACPI S3 State resume: Successful
ACPI S3 State resume reliability: Good
(8)
USB Emulation: Disabled
Keyboard: PS/2 keyboard, USB keyboard
Mouse: PS/2 mouse, USB mouse
USB Storage Stick: Yes
ACPI S3 State entry: Successful
ACPI S3 State resume: Instant Wakeup
ACPI S3 State resume reliability: Good
Note: 'sudo sh -c "echo USB0 > /proc/acpi/wakeup"' and 'sudo sh -c "echo USB2 >
/proc/acpi/wakeup"' suppresses the ACPI S3 State wakeup bug.
____________________________________________________________________________
Enabling "USB Emulation" in ASUS P5N-E SLI mainboard's BIOS setup causes the
computer to freeze when "entering" ACPI S3 State (Note the "entering" part. I
cannot even do resume since the computer won't even enter ACPI S3 State.).
If I set "USB Emulation" in BIOS setup to Disable, the bug symptoms are
identical to those of ASUS P4S8X-MX and P4S8X mainboards.
I am willing to do further testing using Canonical pre-compiled Linux 3.7
kernel on the same box if that is what the upstream developers want me to do.
For this test, I continued to use Linux 3.2.0-35-generic-pae kernel.
Let me know what I should do next to help fix this bug.
Regards,
fpgahardwareengineer
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