Public bug reported:
Sometimes (randomly, but more often after a long while of being suspended), my
laptop cannot wake up from the suspended to ram state. It is a samsung n220
netbook, with ubuntu 12.04 precise and 3.2 kernel. When the system hangs on
wake, and I try to hit the caps lock key, the led does not light up, meaning (I
think) that it's not a problem of video card, but a real kernel hang.
It's hard to know when the problem appear. It happens 1 over 5 times when I
make my suspend my system to ram.
Following various hints on the launchpad pages, I tried to put the
intel_idle.max_state=0 or 3 to the kernel parameter. It seems to work but then
the battery runs out of energy more quickly (and the battery discharge rate
shown by ubuntu is increased by almost 1W at least).
How could I track what causes my system to not wake up properly ?
Thank you.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/1390780
Title:
Samsung n220 randomly does not wake up from suspended to ram state
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
Sometimes (randomly, but more often after a long while of being suspended),
my laptop cannot wake up from the suspended to ram state. It is a samsung n220
netbook, with ubuntu 12.04 precise and 3.2 kernel. When the system hangs on
wake, and I try to hit the caps lock key, the led does not light up, meaning (I
think) that it's not a problem of video card, but a real kernel hang.
It's hard to know when the problem appear. It happens 1 over 5 times when I
make my suspend my system to ram.
Following various hints on the launchpad pages, I tried to put the
intel_idle.max_state=0 or 3 to the kernel parameter. It seems to work but then
the battery runs out of energy more quickly (and the battery discharge rate
shown by ubuntu is increased by almost 1W at least).
How could I track what causes my system to not wake up properly ?
Thank you.
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