Re: [3/6] 2.6.21-rc4: known regressions

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On 3/26/07, Adrian Bunk <bunk@xxxxxxxxx> wrote:

> Resume from RAM (s2ram) still broke (tried with or without
> CONFIG_NO_HZ). Suspend to RAM seems ok, but upon resume, the screen
> will only display "inu" and only after pressing the power button will
> the system return to console. But "date" still doesn't advance.

This might be related to the following regression:

Subject    : first disk access after resume takes several minutes
             ('date' does not advance after resume from RAM, CONFIG_NO_HZ=n)
References : http://lkml.org/lkml/2007/3/8/117
             http://lkml.org/lkml/2007/3/25/20
Submitter  : Michael S. Tsirkin <mst@xxxxxxxxxxxxxx>
Handled-By : Thomas Gleixner <tglx@xxxxxxxxxxxxx>
             Ingo Molnar <mingo@xxxxxxx>
Status     : problem is being debugged

Adrian,

It's related. I tested without CONFIG_HPET_TIMER, and now my X60 can
suspend and resume from RAM (s2ram). Even better, it works
with/without CONFIG_NO_HZ.

But, suspend to disk still broke with CONFIG_NO_HZ set.

Thanks,
Jeff.
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