[Bug 70386] New: invert_brightness needed for HP Envy 17 with Haswell processor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70386

          Priority: medium
            Bug ID: 70386
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: invert_brightness needed for HP Envy 17 with Haswell
                    processor
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: fred.new2911 at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

My display boots black unless I add i915.invert_brightness=1 to my boot
parameters (Fedora 20 beta).

# lspci -v -s 00:02.0
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor
Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
    Subsystem: Hewlett-Packard Company Device 1968
    Flags: bus master, fast devsel, latency 0, IRQ 43
    Memory at d3000000 (64-bit, non-prefetchable) [size=4M]
    Memory at c0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at 6000 [size=64]
    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

The backlight hotkeys appear to work as I would expect them, except that I
don't press the fn key to activate them, I just press F2 (darker) and F3
(brighter).

I'll submit dmesg and /sys/kernel/debug/dri/0/i915_opregion as soon as I can
reboot.

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