https://bugzilla.kernel.org/show_bug.cgi?id=71491
Bug ID: 71491
Summary: Acer Aspire One D257, kernel 3.13 broke brightness
control, fn brightness keys no longer respond.
Product: ACPI
Version: 2.5
Kernel Version: 3.13.5-1-ARCH
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Created attachment 127971
--> https://bugzilla.kernel.org/attachment.cgi?id=127971&action=edit
acpidump of aspire one d257
Hello all, I hope I am posting this in the right place. I have an Acer Aspire
One, model D257 with intel integrated graphics. The backlight control buttons
always worked out of the box with no special kernel parameters until 3.13.
Upon upgrading to 3.13, specifically 3.13.5-1 on arch x86_64
-brightness went to max
-fn brightness keys are non-responsive
-# ls /sys/class/backlight/
acpi_video0 intel_backlight
Before the patch, acpi_video0 did not exist. I believe it to be the culprit.
I added the video.use_native_backlight=1 parameter to my kernel line in grub.
Nothing changed.
I then added
/etc/X11/xorg.conf.d/20-intel.conf
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "intel_backlight"
BusID "PCI:0:2:0"
EndSection
With the xorg pointer and the kernel parameter, my computer now boots at
previously set backlight level, but the fn+brightness keys still do not work.
Thanks. Here is the discussion thread about my
problem:https://bbs.archlinux.org/viewtopic.php?pid=1388092
I'm attempting to attach my acpidump here, it looks like gibberish to me, but I
hope it helps.
This is my first time posting a bug, so please let me know what other
information you would find helpful.
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