2 Jul
2021
2 Jul
'21
4:24 p.m.
Hi!
Upon clikcing on "Log Out..." I am presented with various choices. I am
confused which one correpsonds to hibernate (suspend to disk). Is it
"Freeze Computer" or "Suspend Computer"? What I need is the memory to
be
written to the swap partition of the disk and power turned off. In other
words, which one of these calls `systemctl hibernate`, or is a different
mechanism used?
I had to fiddle with /etc/systemd/sleep.conf and add:
HibernateMode=shutdown
to make hibernation work correctly. Suspend to RAM (often also called
"Sleep") makes the laptop hang, so I need to avoid it (unless I find a
fix).
Thanks!
Gianluca
-----------------------------------------------------
Gianluca Interlandi, PhD gianluca(a)u.washington.edu
+1 (206) 685 4435
http://gianluca.today/
Department of Bioengineering
University of Washington, Seattle WA U.S.A.
-----------------------------------------------------
2 Jul
2 Jul
10:28 p.m.
On 2021/07/03 8:24:21 AM, Gianluca Interlandi wrote:
Hi!
Upon clikcing on "Log Out..." I am presented with various choices. I am
confused which one correpsonds to hibernate
(suspend to disk). Is it "Freeze Computer" or "Suspend Computer"?
What I need is the memory to be written to the swap
partition of the disk and power turned off. In other words, which one of these calls
`systemctl hibernate`, or is a
different mechanism used?
I had to fiddle with /etc/systemd/sleep.conf and add:
HibernateMode=shutdown
to make hibernation work correctly. Suspend to RAM (often also called "Sleep")
makes the laptop hang, so I need to avoid
it (unless I find a fix).
Thanks!
Gianluca
Ciao Gianluca,
if you are using R14.1.0-dev, there are up to 4 possible buttons, depending on what is
supported by your system.
- freeze
- suspend ==> suspend to RAM
- hibernate ==> suspend to disk
- hybryd suspend ==> suspend to RAM+disk
Cheers
Michele
11:28 p.m.
On Sat, 3 Jul 2021, Michele Calgaro via tde-users wrote:
Ciao Gianluca,
if you are using R14.1.0-dev, there are up to 4 possible buttons, depending
on what is supported by your system.
- freeze
- suspend ==> suspend to RAM
- hibernate ==> suspend to disk
- hybryd suspend ==> suspend to RAM+disk
Ciao Michele,
I'm using R14.0.10 and it's interesting I do see the hibernate option now.
I tried it out and it works. I do not see "hybryd suspend".
Do you please mind explaining the difference between "freeze" and "suspend
to RAM"? I understand this question is a bit outside a DE development.
I also wonder how come you no longer see a nice slpash screen during
hibernating and resuming as you did in the past. Now it's just a black
screen with a blinking cursor at the top.
Thanks,
Gianluca
-----------------------------------------------------
Gianluca Interlandi, PhD gianluca(a)u.washington.edu
+1 (206) 685 4435
http://gianluca.today/
Department of Bioengineering
University of Washington, Seattle WA U.S.A.
-----------------------------------------------------
11:50 p.m.
On Fri, 2 Jul 2021, Gianluca Interlandi wrote:
On Sat, 3 Jul 2021, Michele Calgaro via tde-users
wrote:
I did find some documentation about the different sleep states:
https://www.kernel.org/doc/Documentation/power/states.txt
It says: "This state [freeze] is a generic, pure software, light-weight,
system sleep state. [...] This state [freeze] can be used for platforms
without Power-On Suspend/Suspend-to-RAM support, [...] It is always
supported."
This means, I do not really need to worry whether my system really
supports it or not since it's just software based? So there should be
little risk that it makes the system hang?
Gianluca
Ciao Gianluca,
if you are using R14.1.0-dev, there are up to 4 possible buttons, depending
on what is supported by your system.
- freeze
- suspend ==> suspend to RAM
- hibernate ==> suspend to disk
- hybryd suspend ==> suspend to RAM+disk
Ciao Michele,
I'm using R14.0.10 and it's interesting I do see the hibernate option now. I
tried it out and it works. I do not see "hybryd suspend".
Do you please mind explaining the difference between "freeze" and "suspend
to
RAM"? I understand this question is a bit outside a DE development. I also wonder how come you no longer see a nice slpash
screen during
hibernating and resuming as you did in the past. Now it's just a black screen
with a blinking cursor at the top.
Thanks,
Gianluca
-----------------------------------------------------
Gianluca Interlandi, PhD gianluca(a)u.washington.edu
+1 (206) 685 4435
http://gianluca.today/
Department of Bioengineering
University of Washington, Seattle WA U.S.A.
-----------------------------------------------------
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-----------------------------------------------------
Gianluca Interlandi, PhD gianluca(a)u.washington.edu
+1 (206) 685 4435
http://gianluca.today/
Department of Bioengineering
University of Washington, Seattle WA U.S.A.
-----------------------------------------------------
3 Jul
3 Jul
2:42 a.m.
On 2021/07/03 3:50:43 PM, Gianluca Interlandi wrote:
On Fri, 2 Jul 2021, Gianluca Interlandi wrote:
Ciao Gianluca,
yes, that kernel doc page is a good reference, I would have pointed you there anyway.
Hybryd suspend is available in R14.1.0-dev and if I remember correctly it is not available
in the R14.0.x series. Also,
hardware support is required for that.
Re freeze: is a lighter form compare to suspend-to-RAM and meant to be quicker to go back
to a working state. I have
seen system hanging with freeze, though. So give it a go, see how it goes and use it/avoid
it depending on the outcoume
of the test.
Re the logo after coming up from hibernate, it is likely to be related to the
kernel/kernel config you are using since
the OS is not operating till the resume from hibernate is completed.
Cheers
Michele
On Sat, 3 Jul 2021, Michele Calgaro via tde-users
wrote:
I did find some documentation about the different sleep states:
https://www.kernel.org/doc/Documentation/power/states.txt
It says: "This state [freeze] is a generic, pure software, light-weight, system
sleep state. [...] This state [freeze]
can be used for platforms without Power-On Suspend/Suspend-to-RAM support, [...] It is
always supported."
This means, I do not really need to worry whether my system really supports it or not
since it's just software based? So
there should be little risk that it makes the system hang?
Ciao Gianluca,
if you are using R14.1.0-dev, there are up to 4 possible buttons, depending on what is
supported by your system.
- freeze
- suspend ==> suspend to RAM
- hibernate ==> suspend to disk
- hybryd suspend ==> suspend to RAM+disk
Ciao Michele,
I'm using R14.0.10 and it's interesting I do see the hibernate option now. I
tried it out and it works. I do not see
"hybryd suspend".
Do you please mind explaining the difference between "freeze" and "suspend
to RAM"? I understand this question is a
bit outside a DE development.
5 Jul
5 Jul
1:24 p.m.
It says:
"This state [freeze] is a generic, pure software, light-weight,
system sleep state. [...] This state [freeze] can be used for platforms
without Power-On Suspend/Suspend-to-RAM support, [...] It is always
supported."
This means, I do not really need to worry whether my system really supports
it or not since it's just software based? So there should be little risk
that it makes the system hang?
Ciao Gianluca,
yes, that kernel doc page is a good reference, I would have pointed you there
anyway.
Hybryd suspend is available in R14.1.0-dev and if I remember correctly it is
not available in the R14.0.x series. Also, hardware support is required for
that.
Re freeze: is a lighter form compare to suspend-to-RAM and meant to be
quicker to go back to a working state. I have seen system hanging with
freeze, though. So give it a go, see how it goes and use it/avoid it
depending on the outcoume of the test. Re the logo after coming up from hibernate, it is
likely to be related to the
kernel/kernel config you are using since the OS is not operating till the
resume from hibernate is completed.
Cheers
Michele
-----------------------------------------------------
Gianluca Interlandi, PhD gianluca(a)u.washington.edu
+1 (206) 685 4435
http://gianluca.today/
Department of Bioengineering
University of Washington, Seattle WA U.S.A.
-----------------------------------------------------
7:21 p.m.
Ciao Michele,
I tried it out. Both "Freeze" and "Suspend" work! It rocks!
I have another question, also tangential to TDE. I am still using the default SDDM that
openSUSE Leap 15.2 came with as
the login display manager. It has no "Hibernate" button, but it has a
"Sleep" button. Any idea whether this corresponds
to Suspend (to RAM) or Hibernate? Last time I tried it out it made my laptop hang but
that's before I fixed the problems
with Hibernate (had to switch from "platform" to "shutdown"), so it
makes me think that "Sleep" in SDDM is actually
Hibernate (or something obscure). But this is irrelevant to everyday use since I normally
just hibernate from TDE.
I also noticed an interesting fact about "Freeze". If you logged in remotely
into the laptop and you put it into the
"Freeze" state, your login shell is also "frozen" but comes back up
immediately as soon as the laptop resumes and it
even "remembered" that I had pressed the ENTER key.
Best,
Gianluca
Ciao Giunluca,
I don't use openSUSE so I don't have an answer about the "Sleep" button.
Simplest way is to just give it a go and see
what happens, you will quickly know whether it will hibernate or suspend to RAM.
Cheers
Michele
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Michele Calgaro