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On Fri, Mar 16, 2012 at 10:58 AM, Grant <emailgrant@×××××.com> wrote: |
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>>> On my just-released Dell XPS 13 Ultrabook, I can control the backlight |
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>>> with 'xbacklight -set 0' and 'xbacklight -set 100'. Any other values |
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>>> cause the screen to blink and flash. The keyboard backlight shortcuts |
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>>> don't work unless I map them to xbacklight 0 and 100. Also xbacklight |
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>>> doesn't work at all if I'm unplugged from AC. I've tried |
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>>> acpi_osi=Linux and acpi_backlight=vendor in grub.conf. acpi_osi |
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>>> doesn't seem to make any difference and xbacklight doesn't work at all |
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>>> without acpi_backlight. Do I just need to wait for a newer kernel? |
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>> |
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>> Does the gentoo install CD or a rescue CD give you any way to test the |
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>> same backlight functions? If the backlight works correctly when running |
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>> such a CD then listing the loaded kernel modules might give you a clue. |
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> |
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> I tried the latest Kubuntu and Ubuntu LiveCDs via unetbootin but the |
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> backlight behavior is the same as with Gentoo. Please let me know if |
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> anyone has any ideas on this. |
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> |
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> - Grant |
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> |
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|
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Grant, |
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Sorry I missed this thread earlier. I've got an Asus 17" laptop |
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that I've been trying unsuccessfully to get the keyboard backlighting |
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to work correctly for weeks (maybe months - I no longer remember how |
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long) On my machine I get keyboard backlighting when I boot the |
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machine, but if I turn off the lights with the switch on the machine I |
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cannot so far turn them back on by any means. |
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On this machine xbacklight -get responds that nothing has backlight |
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properties so I've clearly got some configuration issues. |
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As for the kernel I'm using vanilla-sources-3.2.10 so I don't think |
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there's a lot that is newer than that. |
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I don't care much about screen backlighting but keyboard |
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backlighting is important to me. |
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|
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- Mark |