Re: [Powertop] [PATCH] Fix screen DPMS support detection

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On 08/13/2012 11:11 PM, Igor Zhbanov wrote:
> On my desktop PC running Ubuntu 11.10 with 3.0.0-24-generic-pae kernel
> I have /sys/class/backlight/eeepc-wmi symbolic link pointing to
> /sys/devices/platform/eeepc-wmi/backlight/eeepc-wmi
>
> My PC is non an EEEPC. Perhaps Linux kernel wrongly detects type of =

> hardware,
> I don't know. I just have a PC with an LCD monitor.
>
> P.S.
> By the way, when I use the default mobile kernel without needed =

> CONFIG_s I have
> several more division by zero since PowerTOP uses default value of 0 =

> to lot's of variables.
> But since that CONFIG_s are required to run PowerTOP I have not =

> reported it.
Oh that's not good. If you share your notes on this, I would be happy to =

find solutions for this. Division by zero is bad, even if its a config =

issue.
Thanks for the info
Chris

>
> Arjan van de Ven wrote:
>> On 8/13/2012 9:52 AM, Igor Zhbanov wr
>>> The problem is that on some architectures max_brightness is 0.
>> oooof that's bad
>> yes we shouldn't do divide by zero
>>
>> but what kind of platform has a max brightness of 0 ?????


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