[Gnewsense-dev] Re: [loongson-dev] Re: [ANNOUNCE] Add Basic Standby Support to linux-loongson-2.6.30.1

[Wu Zhangjin]

On Fri, 2009-07-17 at 02:29 +0200, Erwan Lerale wrote:
> Wu Zhangjin wrote:
> > Hi all,
> >
> > Just added basic Standby Support to linux-loongson-2.6.30.1 and create a
> > new tag: linux-loongson-2.6.30.1-Standby (This tag include STD, EC,
> > RTL8187b wifi drivers)
> >
> > you can download it here:
> >
> > http://dev.lemote.com/cgit/rt4ls.git/snapshot/linux-loongson-2.6.30.1-Standby.tar.bz2
> >
> > or
> >
> > git://dev.lemote.com/rt4ls.git linux-loongson/2.6.30/stable
> >
> > have tested it with the default kernel configuration file
> > arch/mips/configs/yeeloong2f_defconfig with gcc 4.4, works well. it may
> > save at least 2W for you.
> >
> > * Usage:
> >
> > after compiling the kernel with the default configuration file, please
> > install the kernel image file and the relative modules, and then, you
> > just need to execute this command to enter into the standby mode:
> >
> > $ echo standby > /sys/power/state
> >
> > and then, resume it with a press on any button of the keyboard.
> >
> > Enjoy it!
> >
> > BTW: several new features will be added to this standby support,
> > including the backlight, camera, usb, wifi operations, which will save
> > about 5W for you. these new features will come about 1-3 weeks later, 
> >
> > Regards,
> > Wu Zhangjin
> >   
> 
> Hello and thanks for your cool job !
> 
> I'm testing linux-loongson-2.6.30.1-Standby. The ec stuff + rtl8187b
> drivers seems to be working fine.
> 
> The problem is with standby :
> 
> xiwen ~ (n32) # echo standby > /sys/power/state
> bash: echo: write error: No such device
> 
> As i'm not using your default kernel config file, do I have to add some
> particular options ?
> 

Yes, please enable this:

[*] Suspend to RAM and standby

Regards,
Wu Zhangjin