Yes, it work with video.use_native_backlight=1
I tried to modify the driver/acpi/video.c file by adding:
{
.callback = video_set_use_native_backlight,
.ident = "Dell Inspiron 11 - 3147",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_VERSION, "Inspiron 11 - 3147"),
},
},
but didn't managed to make it work :(
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1341988
Title:
[Dell Inspiron 11 - 3147] Brightness control does not work on this
system
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