https://bugzilla.kernel.org/show_bug.cgi?id=109081
Bug ID: 109081
Summary: Freezes with Intel i7 6700HQ (Skylake) on MSI GE72 6QF
Product: ACPI
Version: 2.5
Kernel Version: 4.4.0-rc3
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: blocking
Priority: P1
Component: BIOS
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Created attachment 196761
--> https://bugzilla.kernel.org/attachment.cgi?id=196761&action=edit
Kernel configuration
Got a new MSI laptop after my previous one died, it's a GE72 6QF and it comes
with a Intel i7 6700HQ processor which seems to cause trouble to the linux
kernel.
If I try to boot without any options, the kernel freeze nearly instantly, I
just have the time to see a few lines on the screen and everything goes dark,
no way to use sysrq to reboot, I have to do a hardware off using the power
button.
I manage to boot using either one of the acpi=off or nolapic options,
corresponding logs are attached.
With acpi=off, all the core of my processor seems to be correctly detected and
usable, but I'm afraid that as power management is off, cooling might not work
correctly and therefor it's not safe to run like this.
With nolapic, obviously only one core of the processor is detected and usable,
which make the thing really slow, but everything else seems to work correctly.
I also tried various other options :
* acpi=ht
* acpi=strict
* acpi=noirq
* pci=noacpi
* pnpacpi=off
* noapic
* lapic=notscdeadline
* acpi_osi=Linux
* acpi_os_name="Windows 2015" (the laptop comes with windows 10)
* acpi.power_nocheck=1
Most of them doesn't change anything, with some of them I had a few more lines
before the kernel freeze, but it never reach the point where the root
filesystem was mounted and so I have no log.
There is some options in the bios (which is up to date, I flashed it to the
latest version) related to hypthreading and power states, I tried playing with
them but it doesn't seems to change anything so I left them to there default
values.
I had the same kind of problems with my two previous laptop (coming also from
MSI) but was able to fix them quickly by editing the DSDT.
But it was 4 and 6 years ago and now fixing this seems to be out of my reach (I
can't even get the damn DSDT decompiled... some of the acpi tables makes iasl
segfault).
Here I attache the kernel config, the log files, the output of lspci and
dmidecode and the acpi tables.
Feel free to ask me to try other configuration or boot options, or providing
more log or anything, I will try to provides them as fast as possible (I need
the thing to do my work, and I'm pretty inefficient with windows).
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