RK, in order to upstream this, could you please test the latest mainline
kernel (4.4) and advise to the results?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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** Tags added: regression-potential
** Tags removed: regression-potential
** Tags added: natty
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Title:
[Asus UL30VT] Backlight cont
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
[Asus UL30VT] Backlight control does not work
Status i
Hi Christopher,
thanks for your continued help.
The command
"echo 8 > /sys/class/backlight/intel_backlight/brightness"
does set the brightness to a very low value (basically completely black). This
was done with the "acpi_backlight=vendor" kernel parameter in use.
Rebooting "with just kernel par
RK, do any of the WORKAROUNDs mentioned in
https://wiki.ubuntu.com/Kernel/Debugging/Backlight let you adjust the
backlight with your keyboard (for now, don't worry about attaching the
debugging information mentioned in the article).
** Changed in: linux (Ubuntu)
Status: Confirmed => Incompl
I have now tested the very latest kernel, version 3.19 rc 1 (from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-rc1-vivid/), and
backlight control still does not work.
The indicator does pop up and indicates increase and decrease in the
correct way, but the actual backlight level on the lapt
RK, could you please test the latest mainline kernel via 3.18-rc6 and
advise to the results?
** Tags removed: regression-release
** Tags added: precise
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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Hi,
I have now gone back and tested kernels back to 2.6.32, the kernel that was
used in Ubuntu when this laptop was released. It seems I remembered
incorrectly, backlight control has never worked properly on this laptop.
Backlight control did not work on any of the kernels I tested. I tested
the
RK, the next step is to fully commit bisect from your prior working
release to Trusty in order to identify the last good kernel commit,
followed immediately by the first bad one. This will allow for a more
expedited analysis of the root cause of your issue. Could you please do
this following https
Hi,
I've tested the new 3.18 kernel
($ uname -a
Linux lina-UL30VT 3.18.0-031800rc4-generic #201411091835 SMP Sun Nov 9 23:36:36
UTC 2014 x86_64 x86_64 x86_64 GNU/Linux)
However, the bug persists. Backlight control does not work.
Furthermore, the touchpad control cannot be turned off with the ho
** Tags added: latest-bios-211
** Tags added: regression-release
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Title:
[Asus UL30VT] Backlight control does not work
Status in “
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.18 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix t
** Attachment added: "fwts_method"
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** Attachment added: "results.log"
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** Description changed:
The backlight control on my Asus UL30VT has not worked for quite a
- while. It just to work, a few ubuntu versions ago. The backligh
** Attachment added: "dmidecode.log"
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** Attachment added: "backlight"
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