[Bug 62951] New: Screen goes black at handover by i915 frame buffer driver on Packard Bell EasyNote TK37

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=62951

            Bug ID: 62951
           Summary: Screen goes black at handover by i915 frame buffer
                    driver on Packard Bell EasyNote TK37
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.10.14
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: didier.spaier at epsm.fr
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Laptop Packard Bell EasyNote TK37, kernel 3.10.14, Slackware64-current.

When booting using kernel mode setting, screen goes black after a few seconds.

lspci -vnn reports:
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series
Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA
controller])
        Subsystem: Acer Incorporated [ALI] Device [1025:048a]
        Flags: bus master, fast devsel, latency 0, IRQ 44
        Memory at d0000000 (64-bit, non-prefetchable) [size=4M]
        Memory at c0000000 (64-bit, prefetchable) [size=256M] s at 5110
[size=8]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Power Management version 3
        Kernel driver in use: i915

appending  i915.invert_brightness=1 to the command lines works

this is a common problem with this chipset, so I suggest patching file:
drivers/gpu/drm/i915/intel_display.c like this:

        /* Acer Aspire 4736Z */
        { 0x2a42, 0x1025, 0x0260, quirk_invert_brightness },

+      /* Packard Bell EasyNote TK37 */
+      { 0x2a42, 0x1025, 0x048a, quirk_invert_brightness },

Rebuilding the kernel after that works.

Cheers, Didier

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