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Message #99271
[Bug 1381625] Re: Adjust brightness to lowest value caused screen whole black
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.19 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 this bug, please add the tag:
'kernel-bug-exists-upstream'.
If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".
Thanks in advance.
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19-rc4-vivid/
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https://bugs.launchpad.net/bugs/1381625
Title:
Adjust brightness to lowest value caused screen whole black
Status in OEM Priority Project:
New
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
When adjusting screen brightness to lowest value, it turns screen
backlight off.
[Test Case]
1. Install Image
2. Press System's brightness hotkey to adjust the brightness level to the lowest or
3. Go to System "Settings" -> "Brightness & Lock" to adjust brightness level to the lowest
4. Check if the screen display still has backlight
Expected results: There is still screen backlight
Actual results: Sceen backlight is turned off
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References