linux-kernel - Suspend to RAM doesn't work anymore in 2.6.21

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Date:	Mon, 19 Mar 2007 13:50:39 +0100
From:	Tobias Doerffel <tobias.doerffel@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Suspend to RAM doesn't work anymore in 2.6.21

Hi,

Suspend to RAM used to work fine on my computer (Intel Core Duo, 1 GB RAM, 
Intel 82801G (ICH7-chipset) mainboard, NVIDIA-gfx-card, tg3-ethernet) up to 
2.6.20.3. But no matter which rc of 2.6.21 I use, suspend to RAM doesn't work 
anymore. Up to rc3 even suspending stopped at "suspending console" which 
appearently seems to be fixed in rc4. I tried rc4-git4 with minimal config 
(no dyndicks, no HRT, no MSI, no sound, no bluetooth, no PCMCIA, no WLAN, no 
USB, no cpufreq) but still I can't resume properly. Caps works and I can 
login through SSH. Back to a more complete config (sound, MMC, WLAN, PCMCIA - 
still no dynticks or HRT - see attachment "config") I get exactly the same 
behaviour.

When logged in through SSH after resume I saved output of dmesg (which 
includes full power management debug messages), see 
attachement "dmesg-resume". The system basically seems to be back but lot of 
things do not work such as loading/unloading e.g. my WLAN-driver (ipw3945), 
running "top" or "dstat" etc.   "uptime" always returns 0 min, even with 
power management debug disabled.

Kernel:
Linux version 2.6.21-rc4 (gcc version 4.1.2 20061115 (prerelease) (Debian 
4.1.1-21)) #23 SMP PREEMPT Mon Mar 19 12:27:56 CET 2007

How can I help with further debugging or things like that? Please add me to Cc 
as I'm not subscribed.

Tobias

View attachment "config" of type "text/plain" (39045 bytes)

View attachment "dmesg-resume" of type "text/plain" (29599 bytes)

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