Messages in this thread | ![/](/images/icornerl.gif) | | Subject | 2.6.0-test8-mm1: ACPI S3 suspend works unrealiably | From | Felipe Alfaro Solana <> | Date | Wed, 22 Oct 2003 00:02:51 +0200 |
| |
Hi!
I'm having problems with ACPI S3 on my laptop. Sometimes, I can resume from standby, but other times, it simply hangs or reboots while resuming.
When trying to suspend by using "echo 3 > /proc/acpi/sleep", something strange occurs most of the time. Sometimes, when the system enters S3, I can hear my hard drive make a "click". This "click" is exactly the same I can hear when the system shuts down and parks the hard disk heads. If, while suspending to S3, I hear this typical "click" sound then, systematically, the system is then unable to resume from suspend, usually getting frozen with a black screen showing "Stopping tasks:" message, or simply by rebooting.
However, other times, forcing the system into S3 does not produce the click sound, but instead, I can hear how the hard drive stops spinning gradually (but no "click"). Whenever this happens, the system is able to resume from suspend with no problems at all.
At first, I though the system was unable to resume due to conflicting modules (like UHCI-HCD, YMFPCI or the CardBus drivers). I have tried nearly every combination, and even tried unloading every loaded module with no result. So, this leads me to think that, sometimes, when entering S3, the hard drive is shut down and, when resuming, the kernel is unable to spin the hard drive up and so hangs. Thus, it seems that sometimes the hard drive is incorrectly spun down when entering S3.
Any ideas? How can I be sure this is the culprit of my problems?
Thanks!
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| ![\](/images/icornerr.gif) |