I tested patch @ #11, and brightness does not work. I also used the
drivrs/acpi/video.c in kernel 3.5, and brightness does not work either.
I executed "lsmod | grep 915" and found this Haswell system does not
have i915 running. The brightness may not be working for more than one
reason - including
Tested Ubuntu 12.04.03 (kernel 3.8) and brightness hotkey works fine. I
am going to verify https://bugs.launchpad.net/ubuntu/+source/linux-lts-
raring/+bug/1249978/comments/2 on kernel 3.2 and to backport if it is
the fix.
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Change
@a16g,
I agree with what you said. We should check whether any workaround added
during the enablement and ask s/w engineer not to add workaround unless
schedule will slip or BIOS won't fix.
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There's one ACPI related bug on 3.8 kernel, bug 1249978
According to Keng-Yu, this bug is related to brightness control through
ACPI
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Title:
[De
The closest enablement bug that I can find is bug 1180284, but it says
the hotkeys doesn't work only _sometimes_, and from the bug description
it looks like a BIOS bug to me, which we should have found this issue
during enablement.
** Changed in: linux (Ubuntu)
Assignee: Anthony Wong (anthony
** Tags added: blocks-hwcert
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Title:
[Dell Latitude E6440] Unable to adjust brightness on Precise
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Title:
[Dell Latitu
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[Del
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