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    SubjectRe: [Linux-fbdev-devel] [PATCH] nvidiafb: allow ignoring EDID info
    On Mon, 29 Jan 2007 11:12:57 +1100
    "Dave Airlie" <airlied@gmail.com> wrote:

    > > > Some nVidia video cards have broken EDID information. Using nvidiafb
    > > > with CONFIG_FB_NVIDIA_I2C enabled on these systems causes the console
    > > > framebuffer to use wrong timing information, causing the display to be
    > > > extremely 'snowy'. Since most distribution kernels are compiled with
    > > > CONFIG_FB_NVIDIA_I2C enabled, this prevents usage of the nvidia
    > > > framebuffer on said broken system without recompiling the kernel
    > > > (or at least the nvidiafb module).
    > > >
    > > > Solve the issue by introducing a new boolean module parameter (useedid)
    > > > which can be set to 0 to prevent the driver from using the EDID
    > > > information.
    > > >
    > > > If this patch is accepted, we can probably get rid of CONFIG_FB_NVIDIA_I2C
    > > > altogether.
    > > >
    > >
    > > That's a pretty sad solution. Is it possible to detect these bad cards at
    > > runtime via ther behaviour? If not, can we generate a blacklist for the
    > > known-bad cards based on PCI IDs or something?
    > >
    > > Because most users won't even be aware of the module option: they'll just
    > > know that their card doesn't work right.
    >
    > This isn't a card problem this is a monitor problem, the card just
    > passes through the edid data from the monitor... or else the
    > programming of the card registers from edid is wrong..
    >

    oh. I'll take that as an ack :(

    (where'd my cc go?)

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