On Wed, Aug 31, 2016 at 01:27:36PM +0200, Roland Singer wrote: > 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! */ > { [..] > } > Else > { > LKEN (PION) > } > > /* ... */ > > Return (Zero) > } > > > > If not set to Windows 2009, then this is triggered: > > > Method (LKEN, 1, NotSerialized) > { [..] > } Yep, this is the same code. I stripped out irrelevant parts from the previous mail for brevity. > 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... See Documentation/acpi/initrd_table_override.txt and note that it is important that the tables are really located at /kernel/firmware/acpi/ in your initrd (which must be the first, even before any possible microcode updates). What are you trying to do? For ACPI method tracing, see Documentation/acpi/method-tracing.txt -- Kind regards, Peter Wu https://lekensteyn.nl _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
