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power saver / computer sleep problems

Started by os2monkey, 2007.11.21, 10:03:41

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os2monkey

Hi,
I have a ibm netvista 6790 11U with ecomstation 1.2R.
I've noticed that if I leave my computer for a while and the motherboard goes into sleep mode, and then if I come back to use ECS, the system tends to freeze up and require a reboot.
Otherwise it's pretty stable - meaning if I reboot and don't allow it to "sleep" it doesn't seem to crash.
I was just wondering if anyone has experienced anything similiar and have a resolution. OR do you know how I can disable sleep mode? (meaning is it an ecs feature that I can prevent.).
I'll take a look at the cmos to see if it's a setting there.

os2monkey

Well I believe I found how to turn the sleep mode feature off in the cmos setup, (will know for sure in 30 minutes :)..) but am am curious if anyone else has had any experience with how ecs handles sleep mode for your respective systems.

warpcafe

Hi,

well all of the following is subject to hearsay and guessing...
I was told that there are some issues with power management on modern systems using ACPI and eCS.
What I know of is that some devices (especially network cards) don't re-initialize correctly when the system is resuming from standby, which *might* have an impact on system stability... ;-)

HTH
Thomas
"It is not worth an intelligent man's time to be in the majority.
By definition, there are already enough people to do that"
- G.H. Hardy

warpcafe

Hi again,

what a coincidence! I just read from the VOICE announcement of Uniaud 1.1.4 RC4...:

"Changes since 1.1.4rc3:
  Fixed loss of IRQ after suspend/resume.
  ..."

Another indication of what might go wrong with devices/drivers when resuming... :-)

Regards,
Thomas
"It is not worth an intelligent man's time to be in the majority.
By definition, there are already enough people to do that"
- G.H. Hardy

RobertM

Quote from: warpcafe on 2007.11.22, 11:06:49
Hi,

well all of the following is subject to hearsay and guessing...
I was told that there are some issues with power management on modern systems using ACPI and eCS.
What I know of is that some devices (especially network cards) don't re-initialize correctly when the system is resuming from standby, which *might* have an impact on system stability... ;-)

HTH
Thomas

I believe Thomas is correct... but the issue also affects non-ACPI setups in various ways. On some older IBM systems, it just simply wont let you suspend with certain "plug-in" Network Cards installed (for instance a PCMCIA card) and gives you an error message that oddly (for IBM) is very succinct and to the point telling you suspend/hibernate is not possible with network card in PCMCIA slot. On non-IBM systems, or other IBM systems, I am not sure if you get the error message or not... and I also think that the type (brand) of card installed can also affect whether it goes into (and successfully out of) hibernate/suspend (I think there are certain IBM adapters that work)...


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