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    SubjectRe: [BUG] i915/intel-acpi.c: failed to get supported _DSM functions (was: [Dual-LVDS Acer Iconia laptop] i915/DRM issue: one screen stays off)
    On Mon, Dec 05, 2011 at 09:56:47PM +0100, Baptiste Jonglez wrote:
    > CC-ing intel-gfx@lists.freedesktop.org (see below)
    > On Mon, Dec 05, 2011 at 11:00:41AM +0800, joeyli wrote:
    > > > [drm:intel_dsm_pci_probe] *ERROR* failed to get supported _DSM functions
    > > >
    > > > (attached is the relevant part of dmesg [1])
    > > >
    > > >
    > >
    > > Have no idea for this _DSM error, need help from drm and acpi experts.
    >
    > It definitely looks like an ACPI issue.
    > That function is defined in `drivers/gpu/drm/i915/intel_acpi.c'.
    > The whole file was added more than a year ago by commit 723bfd707a97
    > (see the relevant thread on intel-gfx@ [1]) to "add _DSM support".
    > One of the first comment is about "Calpella", which is exactly the
    > platform of my laptop (as shown by lshw)

    Ignore that - it's entirely harmless.

    --
    Matthew Garrett | mjg59@srcf.ucam.org


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