No C3 states after swsuspend/resume

DISCUSSION Johan Vromans 2 participants 3 messages Dec 22, 2004 – Dec 25, 2004 2 messages not in the archive ACPI

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Johan Vromans

author

2004-12-22 21:08 UTC #0 lore raw

Hi,

I seem to have swsusp reliably going, with the exception that after resume, the cpu won't enter C3 mode anymore (it does use C3 before the first suspend). Any ideas what goes wrong, and where to look?

System is an Acer TravelMate 4001WLMi running Fedora Core 2, kernel 2.6.9-1.6FC2. The kernel is as supplied by Fedora, rebuild with Swap Suspend enabled.

-- Johan

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Pavel Machek

2004-12-23 13:03 UTC #2 lore raw

Hi!

Quoted 7 lines

I seem to have swsusp reliably going, with the exception that after resume, the cpu won't enter C3 mode anymore (it does use C3 before the first suspend). Any ideas what goes wrong, and where to look?
System is an Acer TravelMate 4001WLMi running Fedora Core 2, kernel 2.6.9-1.6FC2. The kernel is as supplied by Fedora, rebuild with Swap Suspend enabled.

Can you try again on vanilla 2.6.9? Does it still happen without usb?
Pavel

Signature · 9 lines

64 bytes from 195.113.31.123: icmp_seq=28 ttl=51 time=448769.1 ms         



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Johan Vromans

author

2004-12-25 08:47 UTC #4 lore raw

Quoted 1 line · Pavel Machek

Can you try again on vanilla 2.6.9?

I'll give it a try.

Quoted 1 line

Does it still happen without usb?

Yes. In fact, when I boot in single user mode, and unload the uhci-hcd module, all is well and C3 states are used. After suspend/resume, bus master activity is ffffffff and never changes. I tried stopping all processes and unloading all modules, but nothing seems to make a difference.

-- Johan