[Bug 82481] New: Onboard Intel GMA X4500HD fails to initialize under 3.16.x

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=82481

            Bug ID: 82481
           Summary: Onboard Intel GMA X4500HD fails to initialize under
                    3.16.x
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.16.1
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: da_audiophile at yahoo.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Created attachment 146771
  --> https://bugzilla.kernel.org/attachment.cgi?id=146771&action=edit
dmesg with debugging enabled

Upon updating to 3.16.1, I see the following in my dmesg accompanied by a black
monitor.  The only solution is to reboot.  Unfortunately, the bug does not
occur on every boot.  Seems to occur about 10 % of the time.

I have enabled debugging by creating /etc/modprobe.d/i915.conf which contains a
single line, "options drm debug=0xe" and attached the output of dmesg with that
enabled.  Note - my initramfs does not have i915 compiled in if that is
important.  Glad to provide additional details.

% lspci -v
00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset
Integrated Graphics Controller (rev 03) (prog-if 00 [VGA controller])
    Subsystem: Gigabyte Technology Co., Ltd GA-EG45M-DS2H Mainboard
    Flags: bus master, fast devsel, latency 0, IRQ 47
    Memory at fd800000 (64-bit, non-prefetchable) [size=4M]
    Memory at d0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at ff00 [size=8]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [d0] Power Management version 2
    Capabilities: [a4] PCI Advanced Features
    Kernel driver in use: i915
    Kernel modules: i915

Other users are affected by this as well[1],

1. https://bbs.archlinux.org/viewtopic.php?id=185650

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