[Bug 540333] Re: Brightness hot-keys don't work on Samsung NC10

[Chase Douglas]

It would be helpful to have a trace of the kernel backlight functions.
Please run the following:

$ sudo sh -c "echo '*backlight*' > /sys/kernel/debug/tracing/set_ftrace_filter"
$ sudo sh -c "echo function_graph > /sys/kernel/debug/tracing/current_tracer"
$ sudo sh -c "echo 1 > /sys/kernel/debug/tracing/tracing_enbled"
$ sudo sh -c "echo 1 > /sys/kernel/debug/tracing/tracing_on"

Then hit one of the backlight buttons. Now, upload the file
/sys/kernel/debug/tracing/trace.

Thanks

-- 
Brightness hot-keys don't work on Samsung NC10
https://bugs.launchpad.net/bugs/540333
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to linux in ubuntu.