[Bug 106721] New: Freeze with i1915 and Intel Skylake HD530

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=106721

            Bug ID: 106721
           Summary: Freeze with i1915 and Intel Skylake HD530
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.3.0-rc7
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: nscheibl at gmail.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Created attachment 191301
  --> https://bugzilla.kernel.org/attachment.cgi?id=191301&action=edit
dmesg i915.preliminary_hw_support=1  4.3-rc7

Hi,
i'am trying to make my brand new computer to work with Fedora22 and latest
kernel.
I've install latest intel graphic firmware from 01.org 

dmesg show a lot of i915 errors (see attached file).

To make the graphical desktop working i have to configure my bios as follow: 
IGD (Internal Graphic Display) / 256Mo 

And to boot with kernel parameter i915.preliminary_hw_support=1

I have tried to set the bios to PEG/Multi Monitor (which works but also freeze
sometimes with fedora kernel kernel-4.1.10-200.fc22.x86_64
kernel-4.2.3-200.fc22.x86_64). This bios configuration doesn't work (system
hang on GDM) with 4.3-rc5/6/7

When the system is frozen, i couldn't switch to any VT (eg ctrl-alt F3), even
the reset button wired to my motherboard doesn't work.

When the system "work" with new firwmare i can switch to VT (whereas without it
it was not possible).

I provide you some info and the output of dmesg, tell me if you need more.
I'll try to also add dmesg output with drm.debug=14


# uname -a 
Linux spinabox64.home 4.3.0-rc7 #1 SMP Tue Oct 27 00:24:52 CET 2015 x86_64
x86_64 x86_64 GNU/Linux

# dmidecode -q -t 2 |grep -v ^"#" 
Base Board Information
    Manufacturer: MSI
    Product Name: B150M PRO-VDH D3 (MS-7982)
    Version: 2.0
    Serial Number: F916218906
    Asset Tag: Default string
    Features:
        Board is a hosting board
        Board is replaceable
    Location In Chassis: Default string
    Type: Motherboard


# grep "model name"  /proc/cpuinfo |uniq
model name    : Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz


# lspci -v |grep -A16 VGA
00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated
Graphics (rev 06) (prog-if 00 [VGA controller])
    DeviceName:  Onboard IGD
    Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7982
    Flags: bus master, fast devsel, latency 0, IRQ 123
    Memory at de000000 (64-bit, non-prefetchable) [size=16M]
    Memory at c0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at f000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: [40] Vendor Specific Information: Len=0c <?>
    Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
    Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [d0] Power Management version 2
    Capabilities: [100] #1b
    Capabilities: [200] Address Translation Service (ATS)
    Capabilities: [300] #13
    Kernel driver in use: i915
    Kernel modules: i915

# dmesg |grep -i "warning\|failed" |head -3
[    0.147042] acpi PNP0A08:00: _OSC failed (AE_ERROR); disabling ASPM
[    7.380582] [drm] failed to retrieve link info, disabling eDP
[    7.543323] WARNING: CPU: 1 PID: 149 at drivers/gpu/drm/i915/intel_pm.c:3668
skl_update_other_pipe_wm+0x1de/0x1f0 [i915]()

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