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Date: Wed, 31 Aug 2016 13:27:36 +0200
From: Roland Singer <roland.singer@...ertbit.com>
To: Peter Wu <peter@...ensteyn.nl>, Bjorn Helgaas <helgaas@...nel.org>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-acpi@...r.kernel.org, dri-devel@...ts.freedesktop.org,
emil.l.velikov@...il.com,
"imirkin@...m.mit.edu >> Ilia Mirkin" <imirkin@...m.mit.edu>
Subject: Re: Kernel Freeze with American Megatrends BIOS
Am 30.08.2016 um 21:53 schrieb Peter Wu:
> On Mon, Aug 29, 2016 at 11:02:10AM -0500, Bjorn Helgaas wrote:
>> [+cc linux-acpi, linux-kernel, dri-devel]
>>
>> Hi Roland,
>>
>> I have no idea how to debug this problem. Are you seeing something
>> that suggests it may be a PCI problem?
>
> Yes I suspect there is an ACPI and/ or PCI problem, possibly
> device-specific. Steps to reproduce on the affected machines:
>
> 1. Load nouveau.
> 2. Wait for it to runtime suspend.
> 2. Invoke 'lspci', this resumes the Nvidia PCI device via nouveau.
> 3. lspci never returns, few moments later an AML_INFINITE_LOOP is
> reported.
>
I can confirm this. Same result on my machine.
Here is a link to my ACPI tables:
https://bugs.launchpad.net/lpbugreporter/+bug/752542/+attachment/4722651/+files/Razer-Blade.tar.gz
The specific source for the NVIDIA card can be found in the ssdt5.dsl file.
Method (PGON, 1, Serialized)
{
/* ... */
GPPR (PION, One)
If ((OSYS == 0x07D9)) /* Is Windows 2009 - In my case, setting to Windows 2009 only works! */
{
If ((PION == Zero))
{
P0AP = Zero
P0RM = Zero
}
ElseIf ((PION == One))
{
P1AP = Zero
P1RM = Zero
}
ElseIf ((PION == 0x02))
{
P2AP = Zero
P2RM = Zero
}
If ((PBGE != Zero))
{
If (SBDL (PION))
{
PUAB (PION)
CBDL = GUBC (PION)
MBDL = GMXB (PION)
If ((CBDL > MBDL))
{
CBDL = MBDL /* \_SB_.PCI0.MBDL */
}
PDUB (PION, CBDL)
}
}
If ((PION == Zero))
{
P0LD = Zero
P0TR = One
TCNT = Zero
While ((TCNT < LDLY))
{
If ((P0VC == Zero))
{
Break
}
Sleep (0x10)
TCNT += 0x10
}
}
ElseIf ((PION == One))
{
P1LD = Zero
P1TR = One
TCNT = Zero
While ((TCNT < LDLY))
{
If ((P1VC == Zero))
{
Break
}
Sleep (0x10)
TCNT += 0x10
}
}
ElseIf ((PION == 0x02))
{
P2LD = Zero
P2TR = One
TCNT = Zero
While ((TCNT < LDLY))
{
If ((P2VC == Zero))
{
Break
}
Sleep (0x10)
TCNT += 0x10
}
}
}
Else
{
LKEN (PION)
}
/* ... */
Return (Zero)
}
If not set to Windows 2009, then this is triggered:
Method (LKEN, 1, NotSerialized)
{
Local3 = (CPEX & 0x0F)
If ((Local3 == Zero))
{
If ((Arg0 == Zero))
{
P0L0 = One
Sleep (0x10)
Local0 = Zero
While (P0L0)
{
If ((Local0 > 0x04))
{
Break
}
Sleep (0x10)
Local0++
}
}
ElseIf ((Arg0 == One))
{
P1L0 = One
Sleep (0x10)
Local0 = Zero
While (P0L0)
{
If ((Local0 > 0x04))
{
Break
}
Sleep (0x10)
Local0++
}
}
ElseIf ((Arg0 == 0x02))
{
P2L0 = One
Sleep (0x10)
Local0 = Zero
While (P0L0)
{
If ((Local0 > 0x04))
{
Break
}
Sleep (0x10)
Local0++
}
}
}
ElseIf ((Local3 != Zero))
{
If ((Arg0 == Zero))
{
Q0L0 = One
Sleep (0x10)
Local0 = Zero
While (Q0L0)
{
If ((Local0 > 0x04))
{
Break
}
Sleep (0x10)
Local0++
}
}
ElseIf ((Arg0 == One))
{
Q1L0 = One
Sleep (0x10)
Local0 = Zero
While (Q1L0)
{
If ((Local0 > 0x04))
{
Break
}
Sleep (0x10)
Local0++
}
}
ElseIf ((Arg0 == 0x02))
{
Q2L0 = One
Sleep (0x10)
Local0 = Zero
While (Q2L0)
{
If ((Local0 > 0x04))
{
Break
}
Sleep (0x10)
Local0++
}
}
}
}
Is it possible to override the specific ACPI table functions (SSDT) in the DSDT?
This way I could try to debug to find some more information...
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