[mythtv-users] OT: suspend to disc....

[Bryan Niederberger]

Jules Gosnell wrote:

> Bryan Niederberger wrote:
>
>> Jules Gosnell wrote:
>>
>>> I try not to leave unnecessary electrical stuff running overnight, 
>>> but my mythfrontend takes quite a while to boot/shutdown.
>>>
>>> I have been looking at what it would take to be able to suspend-to 
>>> and resume-from disc.
>>>
>>> It's a Via Epia Ezra (i586) running FC3 with the latest FC3 kernel.
>>>
>>> This looks like the best option - http://www.suspend2.net/ - but 
>>> involves custom built and patched kernels and no doubt a long time 
>>> spent tailoring scripts to unload drivers before shutting down and 
>>> reload them after starting up....
>>>
>>> I was wondering if anyone else was doing this sort of thing with 
>>> their myth-frontend box and what their experiences had been....
>>>
>>> Thanks for your time,
>>>
>>>
>>> Jules
>>>
>>>
>> I went down this path with my Epia M10000 and got mixed results.  I 
>> am using Fedora 3 and found a site that keeps recent kernels and 
>> packages for software suspend in Fedora 3 and 4.  The link is 
>> http://mhensler.de/swsusp/ if you want to check it out.  Getting 
>> things set up was no real problem, as I recall it basically consisted 
>> of installing the hibernate package, installing a custom mkinitrd for 
>> swsusp and installing a patched kernel.  After that, software suspend 
>> worked like a champ simply by executing the hibernate command as root.
>> Overall it works well, boot times are roughly 30 seconds to resume 
>> from suspend mode.  This could probably be faster but my Epia a 
>> little anemic in the processing area.  The main reason I have not 
>> been using hibernate is that the resumed Unichrome driver has some 
>> sort of problem with Myth.  Although I can see the desktop/frontend 
>> perfectly whenever I attempt to play a recording myth just displays a 
>> black screen with audio (I'm not using XVMC so I don't think it's a 
>> problem there).  At this point I got frustrated and never really 
>> looked into what the exact problem was.  If you fair better with your 
>> Epia let me know any tips/tricks.
>
>
> Thanks, Bryan,
>
> I will have a look at this - i was sure that there would be some 
> device that didn't like it :-) and I am using XvMC - still, when I 
> have some time i may try installing this stuff...
>
> BTW - do I need to repartition the disc, or can it suspend to a large 
> file ? Did you manage to attach the hibernate command to your power 
> on/off button (it needs to be wife/child proof :-) ) ?
>
> Cheers
>
>
> Jules
>
>>
>> Bryan
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>
>
>
>
Software suspend uses the swap partition to do a memory dump when you 
ask it to shutdown, so no repartitioning is required.  As for the 
frontend power button, that would probably require you to mess around 
with acpi events and I have never looked into it.  My shortcut was to 
map the remote power button to the hibernate command using irexec.  
Jarod's howto has a very applicable section 
(http://www.wilsonet.com/mythtv/tips.php) about using irexec to map 
remote buttons to applications.  All in all it worked pretty well for 
me, hope that helps.

Bryan