https://bugzilla.kernel.org/show_bug.cgi?id=102871
Bug ID: 102871
Summary: problems with screen brightness adjustment in the
current versions of the kernel.
Product: ACPI
Version: 2.5
Kernel Version: 3.19.0
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Power-Video
Assignee: [email protected]
Reporter: [email protected]
Regression: No
*I do not know if I'm reporting the bug in the right place
Problems with screen brightness adjustment in the current versions of the
kernel. The screen is all the time on maximum brightness and does not adjust.
"This problem is similar to the Windows 8.1 display brightness problem?"
CONFIGURATIONS:
controller:
compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)
display:
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:26 memory:f2800000-f2bfffff memory:d0000000-dfffffff
ioport:f000(size=64)
DESCRIPTION:
For a long time I am having trouble with the screen brightness setting on my
notebook, this problem started from the kernel 3:14, I thought it was just a
simple problem and that with future versions of the kernel that would be
resolved. But the problem persists to this day, I tested almost all Linux
distributions on my notebook and all had the same problem, so I decided to make
the kernel downgrade to earlier versions (for example: [3.13.6] [3.13.0] [3:12
.0]), then the shine had gone back to work, concludes that the problems were
actually the kernel. Resorted to forums, I lost several hours testing,
modifying, but without success.
I do not understand why the kernel versions earlier than 3:14 this problem did
not exist and now in current versions, this problem appears.
This ends up bothering a bit because every time after installing a recent Linux
distribution I build an "old" version of the kernel on the computer.
I tried to solve the problem alone, but it still fails.
**sorry for the English, I am Brazilian and I'm using Google translator
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