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I just installed Arch on an old box with an MSI K8T Neo motherboard and I can't get suspend to RAM working. On the BIOS I have two ACPI modes: S1/POS and S3/STR. If I set it to S1 it does suspend but the hardware is not actually shut off (the fans, LEDs, and monitor backlight says on). With the S3 setting it does a complete shutdown so when I turn it back on it fresh boots instead of resuming. Suspend to both effectively hibernates when the BIOS setting is S3, with S1 it behaves just as suspend to disk. I've tried using systemd, pm-utils, and writing to /sys/power/state directly. All the same.
Just until last night I had Windows XP x64 installed and suspend was working just fine. I mostly use it as a file and printer server but I don't want it running all the time so I use Wake-on-Lan so it wakes up on demand and I'll be using a cron script (or whatever is called on systemd) to put it back to sleep after a while.
Any suggestions?
Last edited by fernan82 (2014-11-15 00:33:50)
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Flashing the bios fixed the problem. I didn't do it before because the readme that comes with the bios firmware said it was the version I had but it's actually 5 major versions newer.
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