Hi,
I've trying to suspend/resume an amd64 machine. The machine is a
fujitsu S710 laptop running:
FreeBSD 10.0-CURRENT #4 r237339=e61ad3a-dirty: Sat Jun 23
17:12:58 CEST 2012
I did the tests in the following conditions:
- No X running. Everything in console. The machine has an Intel video
card, but I did the tests without the i915kms module.
- I removed all the modules I could from the kernel.
The behavior is basically the machine seems to suspend fine (I see
the power led blinking) but when resuming it freezes hard. I see the
disk spinning for a while and then it stops. I can't ssh to it, I can't
use the keyboard at all so I can issue no command at all.
I've tried stripping down the kernel (everything is out except
if_ath, em and usb stack). No pccard, no sdhci, no sound, no cuse4bsd,
no usb hid devices (I'm using uhidd for hid devices), no acpi_video or
acpi_fujitsu there but the same result.
I tried enabling debug.acpi.resume_beep=1. When doing this, the
laptop beeped like crazy.
I tried using the serial console on the laptop. I saw the suspend
process taking down some usb devices. Resume showed nothing on the
serial console.
With sysctl debug.acpi.suspend_bounce=1, the machine stayed alive
(this is expected) but the screen went blank (this I think isn't
expected). The video never came back. The three-finger-salute rebooted
the machine.
With acpi.reset_video I got no result.
Disabling devices in the BIOS (removing wifi, bluetooth, webcam, etc
...) didn't bring me further.
--
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