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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).

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Old 08-29-2005, 11:22 PM   #1
coldsalmon
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Another suspend-to-RAM problem


Hi,

I'm running Kubuntu on my Averatec 3715-EH1 notebook, and am having a problem resuming after suspend-to-ram. Suspend-to-HDD works fine. It appears that I can suspend fine, but when I try to resume, I get a blank screen, and the HDD light stays lit constantly, though I can't hear any activity. Keystrokes get no response. This happens whether I try to resume by touching the keyboard, pressing the power button, or opening the lid. I am forced to reboot. I don't know my graphics card offhand, but will look for the information. The processor is an AMD Sempron 3000+.

Thanks for your help,

--C
 
Old 08-29-2005, 11:52 PM   #2
SlackerLX
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It means that sleep (suspend to RAM) is not supported on your hardware! Only hibernate (suspend to Disk)
 
Old 08-30-2005, 12:10 AM   #3
coldsalmon
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It works in Windows, so it must be supported by the hardware.
 
Old 08-30-2005, 12:32 AM   #4
SlackerLX
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Question

not necessarily! M$ emulates sleep
 
Old 08-30-2005, 02:05 AM   #5
coldsalmon
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Any way I could "emulate sleep" in Linux?
 
Old 08-30-2005, 04:35 AM   #6
SlackerLX
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have you read about suspend to RAM? It's not healthy for computer. Use Hibernate
 
Old 08-30-2005, 04:39 AM   #7
theYinYeti
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Quote:
Originally posted by SlackerLX [suspend to RAM is] not healthy for computer
May I have some pointers? I'd like to learn more about this issue.
 
Old 08-30-2005, 04:45 AM   #8
SlackerLX
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http://wiki.linuxquestions.org/wiki/ACPI
and Google it

Last edited by SlackerLX; 08-30-2005 at 04:46 AM.
 
Old 08-30-2005, 12:51 PM   #9
jspaar
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Quote:
Originally posted by SlackerLX
http://wiki.linuxquestions.org/wiki/ACPI
and Google it
Suspend-to-RAM is unhealthy for the computer? Please back that up with an URL that actually talks about it.
 
Old 08-30-2005, 11:31 PM   #10
coldsalmon
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Yes, why is suspend-to-RAM unhealthy?
 
Old 08-31-2005, 10:36 AM   #11
SlackerLX
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Laptop after suspend to RAM locks up and damages RAM. From personal experience: I burnt RAM on my Laptop Good that it was still on warranty.
 
Old 09-02-2005, 10:50 AM   #12
TFMegatron
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Quote:
Suspend-to-RAM is unhealthy for the computer? Please back that up with an URL that actually talks about it.
http://acpi.sourceforge.net/documentation/sleep.html
 
Old 09-02-2005, 01:05 PM   #13
jspaar
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Thanks Megatron,
ACPI4Linux is a very credible source IMO, but the worst it says about suspend-to-RAM is this:
Quote:
Because it requires a high degree of coordination between the cpu, chipset, devices, OS, BIOS, and OS device drivers, this system state is the most prone to errors and instability.
Pavel Machek has created a small document with some hints how to solve problems with S3.
That sounds to me like it either works or tends to crash on any given system. Nothing about ruining your hardware right?
 
Old 09-02-2005, 02:05 PM   #14
TFMegatron
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I did some light searching and could not validate that acpi s3 damages hardware.
 
Old 09-02-2005, 07:13 PM   #15
jspaar
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About the closest I can find is that on some laptops, ACPI under Linux doesn't turn on the fans, resulting in overheating. That would be unhealthy. But it isn't only a sleep-mode problem, AFAIK.

One examle: http://www.psychosis.net/evo-linux/ under "Power Management".

For now I'm going with the idea that if your fans work OK under ACPI, sleep mode is safe to use.
 
  


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