I've spent the last couple of days trying to figure out how to get my Myth box to suspend to RAM, either from a button press, or using the suspend2 hibernate script. When I set up hibernate to use suspend to RAM, it says that ACPI is not supported (I think in the kernel). I know that my machine can do it. Where in all of the settings or whatever do I enable ACPI? Does it require a kernel compile?

Thanks in advance.

Huh?! ACPI is in the kernel.

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cesman

When the source is open, the possibilities are endless!

Hi there,
I did some work to try to get the computer to go to sleep/hibernate too. Spend a lot of time, with suspend-to-ram always failing with various errors, and the most promising one was hibernate-to-disk software based. So I thought I'd give it a try. Created the hiberfill file, added resume2= into lilo kernel parameters and ran the hibernate program, now when the system starts up it comes up with message (sorry haven't got logs handy, but it's similar to that:) You need to insert echo > /proc/suspend2/do_resume in your init...
*** Here I'm stuck. Not sure how to do it. ***

Once I get it up & running, I'm happy to write up some doco for others to follow. This would be great, as the mythtv backend box doesn't have to be runnig 24/7, but poweron/WOL from scratch takes about 2 minutes, which is excessive. I'm hoping that this solution is a bit shorter (20 seconds?), and of course will try suspend-to-RAM later on to see if that's even shorter too... Let me know if I'm kidnapping your topic, I can create a new one...

are you guys looking for something similar to this?

http://www.knoppmythwiki.org/index.php? ... upToRecord

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Have a question search the forum and have a look at the KnoppMythWiki.

Xsecrets

Do you mean the script doesn't support ACPI or you don't have ACPI installed? Try



from a command line to see if ACPI is installed/working. You should find a directory structure with a bunch of text files you can read for info.

Nick

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HP VL400 (PIII 866), Skystar2 2.6D, PVR350, Nvidia FX5200, 384MB, 200GB, KnoppMyth R5.5

No, the link talks about how to wake up the computer for some scheduled activity. What we're trying to achieve here, is to make the reboot/system load faster. The most "straight-forward" way to do that is to force the computer into "Suspend" or "Sleep" or "Hibernate" mode. Just like windows "Standby"...

However the link you gave will be useful - next stage of the project ;-)

Getting suspend to disk to work with wakeToRecord... That would be cool!

You might want to take a look at http://www.suspend2.net/HOWTO-7.html section 7.4. Is that your problem?

Does anyone know if the options=noacpi in lilo (to fix the nforce clocking problem) will prevent suspend to disk? I did some searches, but could not find the definitive answer...

Cheers,

Allen

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ASUS AT3N7A-I (Atom 330)
TBS 8922 PCI (DVB-S2)

Mostly likely yes.

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cesman

When the source is open, the possibilities are endless!

I just found the bugzilla report on this and it looks like it is fixed in the 2.6.15 kernel.

Cheers,

Allen

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ASUS AT3N7A-I (Atom 330)
TBS 8922 PCI (DVB-S2)

Then you should be happy(ier?) with the next release.

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cesman

When the source is open, the possibilities are endless!

Bingo! That's exactly what I'm trying to figure out how to do. Problem is that it's doesn't seem so straight forward in KnoppMyth... Anyone has step-by-step instructions how to

"edit the linuxrc script by inserting the line echo > /proc/suspend2/do_resume somewhere after mount /proc but before mounting filesystems in your linuxrc script."

in KnoppMyth ???

Sorry I've taken so long to respond. First off, my computer will not suspend to disk properly. If I type 'hibernate' it gets ready to suspend, but then rather then suspend, it immediately restores itself (no power cycle). If I force it to turn off, it prepares to hibernates and turns off, but does not restore when I turn it back on. It just boots as usual.

Now, I would love for hibernate to work, but I would like to suspend to ram even better. This is straightforward in Ubuntu (my most familiar distro), but not so clear here. First I added the following to lilo.conf:

The acpi_sleep=on was something that worked in Grub I think, I don't know if there is an equivalent in lilo, but I added it just in case. After adding the resume2 thing, suspend2 thinks it can hibernate just fine, and as mentioned above, it doesn't.

I tried looking at hibernate.conf in /etc/hibernate, and uncommented

and I commented out all the above stuff as instructed (software suspend 2 stuff). This tells the hibernate script to suspend to ram instead of suspend to disk.

When I run 'hibernate', I get


In response to others' posts:
cesman: ACPI is in the kernel? I believe it, but I still don't know why suspend2 can't find it.
Xsecrets: Maybe I'll do the wake to record eventually, but for now, I just want to turn it on and off.
nickread: These are the contents of /proc/acpi (which I'm pretty sure means it's in the kernel):


gsosna: correct, that is what I'm trying to do, turn off and on faster (more like a DVD player/NES/TV )
alien: I don't think that the link is relevant. I have looked through a bunch of the suspend2 instructions, but since it complained about the kernel I decided to come here.
gsosna again: I agree that it is not clear, can anyone help with his question?

Sorry for the long post. Is there someway to just run a suspend command, not even trying to use the suspend2 (hibernate) script? In Ubuntu, there is a suspend script that you can have run on a power button press. Is there an equivalent in the Knoppix world? Thanks for responses. While I'm waiting for a response, I will try to find what the hibernate script is looking for when it complains that there is no kernel support.

Update: The script is looking for /proc/acpi/sleep, which does not exist. According to the script, it was superceeded by /sys/power/state, which does exist, and is the same thing that the Ubuntu script uses to suspend. However, if I 'echo -n mem > /sys/power/state' nothing happens.
I tried changing my hibernate.conf so that it used sysfs_power_state instead, because that uses the right resource, but it still just prepares for hibernation, and then comes out of it without shutting down. Excerpt from /var/log/hibernate:

Does anyone know how to put my baby to sleep? (Yes I mean knoppmyth)

I'm working on this....

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cesman

When the source is open, the possibilities are endless!

Any luck? Is this a universal problem, or is it limited to my box? Can anyone suspend to ram off a mostly default install?

oblib