https://bugzilla.kernel.org/show_bug.cgi?id=61231
Bug ID: 61231
Summary: Backlight off (set to lowest level) on boot
Product: ACPI
Version: 2.5
Kernel Version: 3.11
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
Assignee: [email protected]
Reporter: [email protected]
Regression: No
The hardware is Acer Aspire V5-573G with Intel (Haswell) video + Nvidia GPU. I
can increase brightness normally with the keyboard fn + arrow keys.
Happened on the stock kernel from Ubuntu 13.10 Beta and the latest mainline
kernel from ubuntu kernel-ppa: linux-image-3.11.0-999.
-generic_3.11.0-999.201309110406_amd64.deb
The brightness levels show up correctly under /sys/class/backlight/acpi_video0
and respond to the brightness controls so it's using the acpi video driver.
Another using reporting same problem:
http://www.linuxquestions.org/questions/linux-newbie-8/black-screen-when-trying-to-install-linux-on-acer-aspire-v5-573g-4175472954/
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