newbie ACPI questions
laffer1 at adsl-68-76-19-75.dsl.klmzmi.ameritech.net
Thu Jul 8 08:24:04 PDT 2004
I also have a precision 650 at home. What is acpi's setting in the bios?
You can set it to s3 or s1 in there. I would check that. I just got my
system on refurb from dell and haven't had a chance to play much yet. :)
On Thu, 8 Jul 2004, Duane Winner wrote:
> Hi all.
> I'm just getting my feet wet with using basic ACPI functionality. Up until my
> FreeBSD release and/or hardware only supported APM, so that's all I have used
> until now.
> I have a Dell Precision 650n running RELEASE-5.2.1p9, and it seems that ACPI
> works as far as I can tell, but I'm not clear on how to use it correctly in
> all circumstances.
> My first problem was that I could not do a power off (halt -p or shutdown now
> -p) -- ACPI would tell me that it could not do it then I would have to hit
> the power button or a key on the keyboard to reboot.
> I solved this by adding "hw.acpi.disable_on_poweroff=0" to /etc/sysctl.conf.
> Now I can either type halt -p/shutdown now -p or just hit the power button on
> the Dell and FreeBSD will gracefully shutdown and power off.
> Now I'm trying to get my arms around suspend functionality, and I'm not so
> clear as to the best way of suspending.
> If I type 'zzz' (which appears to the equivelent of 'acpiconf -s 3'), the
> Dell does suspend, and the power button green LED blinks, which according the
> Dell manual, means the hardware thinks it is suspended. But I can't get it
> out of suspend. Pressing any key on the keyboard or mouse has no effect. If I
> press the power switch (which the Dell manual says should bring it out of
> suspend), then the system reboots.
> I have also tried 'acpiconf -s 1', which seems to work better than s3. I can
> bring the system out of suspend by hitting the power button. However, when in
> suspend, the screen does not go blank. I can still see whatever was on the
> console, plus some output from acpiconf:
> fwohci0: fwochi_pci_suspend
> 'acpiconf -s 1' also seems to work when I'm within X as well (using XFCE4). I
> can type 'acpiconf -s 1' from an xterm, and X will blank, return me to the
> console, and suspend -- but I can still see whatever is on the console. If I
> hit the power button (keyboard/mouse does not work), then I resume and X
> comes back to where it should be.
> I have also tried '-s 4', and that just shuts down the whole computer.
> I guess S1 would be fine for me suspending, but would S3 be better (if I can
> get it to resume correctly)? If S1 is all I can use, what can I do to blank
> the screen as well as suspend the system?
> Any feedback would be greatly appreciated. Following is info I thought would
> be pertainent.
> Duane Winner
> duanewinner at att.net
> System: Dell Precision 650n (option in BIOS to set power mgmt to S1 or S3)
> FreeBSD: 5.2.1 p9
> -su-2.05b# sysctl hw.acpi
> hw.acpi.supported_sleep_state: S1 S3 S4 S5
> hw.acpi.power_button_state: S5
> hw.acpi.sleep_button_state: S1
> hw.acpi.lid_switch_state: S1
> hw.acpi.standby_state: S1
> hw.acpi.suspend_state: S3
> hw.acpi.sleep_delay: 5
> hw.acpi.s4bios: 0
> hw.acpi.verbose: 0
> hw.acpi.disable_on_poweroff: 0
> hw.acpi.reset_video: 1
> hw.acpi.cpu.cx_supported: C1/0
> hw.acpi.cpu.cx_lowest: 0
> hw.acpi.cpu.cx_history: 96654/0
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