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    SubjectRe: [PATCH] ACPI / Video: blacklist some samsung laptops
    On Sat, Jan 07, 2012 at 03:12:38PM +0100, Corentin Chary wrote:
    > On these laptops, the ACPI video is not functional, and very unlikely
    > to be fixed by the vendor. Note that intel_backlight works for some
    > of these laptops, and the backlight from samsung-laptop always work.
    >
    > The good news is that newer laptops have functional ACPI video device
    > and won't end up growing this list.
    >
    > Signed-off-by: Corentin Chary <corentincj@iksaif.net>
    > ---
    >
    > Could the concerned people test this patch and check that it correctly
    > disable the acpi_video backlight ?
    >
    > drivers/acpi/video_detect.c | 40 ++++++++++++++++++++++++++++++++++++++++
    > 1 files changed, 40 insertions(+), 0 deletions(-)
    >
    > diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
    > index 45d8097..376bce2 100644
    > --- a/drivers/acpi/video_detect.c
    > +++ b/drivers/acpi/video_detect.c
    > @@ -132,6 +132,44 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
    > return AE_OK;
    > }
    >
    > +/* Force to use vendor driver when the ACPI device is known to be
    > + * buggy */
    > +static int video_detect_force_vendor(const struct dmi_system_id *d)
    > +{
    > + acpi_video_support |= ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
    > + return 0;
    > +}
    > +
    > +static struct dmi_system_id video_detect_dmi_table[] = {
    > + {
    > + .callback = video_detect_force_vendor,
    > + .ident = "N150P",
    > + .matches = {
    > + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
    > + DMI_MATCH(DMI_PRODUCT_NAME, "N150P"),
    > + DMI_MATCH(DMI_BOARD_NAME, "N150P"),
    > + },
    > + },
    > + {
    > + .callback = video_detect_force_vendor,
    > + .ident = "N145P/N250P/N260P",
    > + .matches = {
    > + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
    > + DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
    > + DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
    > + },
    > + },
    > + {
    > + .callback = video_detect_force_vendor,
    > + .ident = "N150/N210/N220",
    > + .matches = {
    > + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
    > + DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
    > + DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
    > + },
    > + },
    > +};
    > +

    I don't see NF110/NF210/NF310 in this list. Was that an oversight?


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