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SubjectRe: [linux-pm] intermittent suspend problem again
Ferenc Wagner <> writes:

> "Rafael J. Wysocki" <> writes:
>> On Tuesday 01 December 2009, Ferenc Wagner wrote:
>>> "Rafael J. Wysocki" <> writes:
>>>> On Tuesday 01 December 2009, Ferenc Wagner wrote:
>>>>> "Rafael J. Wysocki" <> writes:
>>>>>> In addition to that, you can run multiple hibernation/resume cycles in
>>>>>> a tight loop using the RTC wakealarm.
>>>>> I'll do so, as soon as I find a way to automatically supply the dm-crypt
>>>>> passphrase... or even better, learn to hibernate to ramdisk from the
>>>>> initramfs. :)
>>>> Well, you don't need to use swap encryption for _testing_. :-)
>>> I use partition encryption, everything except for /boot is encrypted.
>> If /boot is big enough, you could use a swap file in /boot for the testing.
> Ramdisk worked good. Maybe too good, because I left the machine doing
> s2disks while I was having dinner, and it achieved some 120 suspends
> without a freeze. Only the e100 and the mii modules were loaded.
> After some script munging I got the machine automatically boot with an
> alternate passphrase, so in vivo testing is possible now. I mean,
> tomorrow.

After almost 100 hibernate/resume cycles, I have to say that this issue
can't be reproduced by suspending in a tight loop. I tried that while
flood pinging my gateway and also with no network activity. The rc8
e100 module was loaded all the time.

> Btw. s2disk has a strange effect of simulating enters during suspend.
> [...]
> Can you also see this?

It can't be seen from the "sleep 1; s2disk" command, so it's probably an
artifact from X, when s2disk starts before Enter is released.

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