** Tags removed: regression
** Tags added: latest-bios-210 regression-release
** Description changed:
- Laptop: ASUS A54C-NB91 with BIOS version 210
+ Laptop: ASUS A54C-NB91 with BIOS version 210 After the 3.6 kernel
+ controlling the backlight via software (like xbacklight and the
+ brightness a
This is related to the kernel interracting with the bios that "caters to
windows 8"
this issued shows up after a bios update i was able to get software to control
the backlight properly on the 3.6.11 kernel, but not on anything newer than that
see the upstream bug report for more info
i never ca
I don't think the kernel is related, because I tested with kernel
3.5(it worked well with Ubuntu 12.10, with "acpi_backlight=vendor") and
had the same problem. I'm using 13.04 and Acer Aspire 4332. If I do
"sudo su" and "echo (brightness value) >
/sys/class/backlight/intel_backlight/brightness" i
** Changed in: linux
Status: Confirmed => Incomplete
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Title:
Backlight control regression
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h
confirmed in 3.9.0-030900rc5-generic
confirmed in 3.9.0-030900rc6-generic
The kernel boot parameter acpi_osi="!Windows 2012" eliminates the regression
example usage in /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT='quiet splash acpi_osi="!Windows 2012"'
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** Changed in: linux
Status: Unknown => Confirmed
** Changed in: linux
Importance: Unknown => Medium
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Title:
Backlight control regress
** Also affects: linux via
http://bugzilla.kernel.org/show_bug.cgi?id=55161
Importance: Unknown
Status: Unknown
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Title:
Backlight co
confirmed in 3.9.0-030900rc4-generic
confirmed in 3.8.4-030804-generic
confirmed in 3.8.0-14-generic
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Title:
Backlight control regression
To man
Confirmed in 3.9.0-030900rc3-generic
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Title:
Backlight control regression
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I made a recording of the issue, sorry my webcam sucks, i was not able
to get vlc to flip the video playback from the webcam to compensate for
the mirror, but its only purpose was showing the backlight response
** Attachment added: "Recording of bug"
https://bugs.launchpad.net/ubuntu/+source/l
Confirmed in 3.8.3-030803-generic
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Backlight control regression
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reported upstream (hopefully i did it right)
https://bugzilla.kernel.org/show_bug.cgi?id=55161
** Bug watch added: Linux Kernel Bug Tracker #55161
http://bugzilla.kernel.org/show_bug.cgi?id=55161
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Confirmed in 3.8.0-12-generic
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Title:
Backlight control regression
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Confirmed in 3.9.0-030900rc2-generic
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Title:
Backlight control regression
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ok i am confused where do i send the email to?
should i attached the output of the command as files?
can i use thunderbird to send it with it set to send in html and plain text?
** Attachment added: "thunderbird send option"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1138168/+attachm
This issue appears to be an upstream bug, since you tested the latest
upstream kernel. Would it be possible for you to open an upstream bug
report[0]? That will allow the upstream Developers to examine the
issue, and may provide a quicker resolution to the bug.
Please follow the instructions on
Confirmed in 3.8.0-11-generic
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Title:
Backlight control regression
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This test was done on 3.9.0-030900rc1-generic
if it matters any value from 0 (completely off) to 4882 (100%) works for this,
increments of 2 have a effect
echo 100 | sudo tee /sys/class/backlight/intel_backlight/brightness
it is like god mode for the back light level
the lowest the fn+brightness
confirmed in 3.9.0-030900rc1-generic
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Backlight control regression
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also effects 3.8.0.10 if that matters
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
Backlight control regression
** Tags added: kernel-bug-exists-upstream
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Backlight control regression
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for the record it is not fixed in 3.8.2, probably should have mentioned that
instead of filling your in boxes with emails
for reference:
http://ubuntuforums.org/showthread.php?t=2122160
sorry about the 2 for 1 email
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RC1 is still missing 3 of the 4 debs, i don't think it would be possible till
the other 3 are there
i have tested this one, if that matters
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8.2-raring/
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Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.8 kernel[0] (Not a kernel in the daily directory) and install both
the linux-image and linux-image-extra .deb packages.
If this bug is fixed in the ma
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