https://bugzilla.kernel.org/show_bug.cgi?id=43581
Summary: Sony Vaio Vgn-Fw21e Brightness Problem
Product: ACPI
Version: 2.5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
AssignedTo: acpi_power-vi...@kernel-bugs.osdl.org
ReportedBy: stratovarius...@windowslive.com
Regression: No
İ have radeon mobility hd 3470 card , my system is x86_64. Before kernel 3.4.2
i check /sys/class/backlight/ file and i have setting about brightness
setting(acpi_video) in this folder and i dont have any problem about
brightness.
After update my kernel to 3.4.2 or new /sys/class/backlight/ is empty.
Ps: i have same problem with both open driver (free) and fglrx driver.
My laptop is sony vaio vgn-fw21e.
Lspci ;
http://paste.kde.org/503558/
Dmesg log ;
http://paste.kde.org/502346/
Kernel log;
http://paste.kde.org/502340/
My Chakra system;
uname -a
Linux PC 3.4.2-1-CHAKRA #1 SMP PREEMPT Mon Jun 11 15:21:32 UTC 2012 x86_64
GNU/Linux
My Arch system;
Linux PC 3.4.3-1-ARCH #1 SMP PREEMPT Mon Jun 18 08:28:29 CEST 2012 x86_64
GNU/Linux
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