Re: [gpm] Is g-p-m (or pm-suspend) supposed to work on a desktop PC?
- From: Richard Hughes <hughsient gmail com>
- To: Paul Johnson <pauljohn32 gmail com>
- Cc: gnome-power-manager-list gnome org
- Subject: Re: [gpm] Is g-p-m (or pm-suspend) supposed to work on a desktop PC?
- Date: Mon, 29 May 2006 20:35:12 +0100
On Thu, 2006-05-25 at 23:25 -0500, Paul Johnson wrote:
Sorry for delay, just got back...
> In our computer lab, we have a bunch of Dell Optiplex 280 pc's that
> are 1 year old. They have 3.2 GH pentium processors (FC5 installs an
> SMP kernel by default) with ATI x300 video drivers. There is one SATA
> drive in each PC. FC5 installed the g-p-m program and I was a little
> surprised, because I thought that was just for laptops. But these
> machines are hot as hell all the time and so I considered the idea
> that suspend to ram overnight might cool things off a little bit. I'm
> willing to try anthing, actually, but the CPU speed is not scalable...
Yes, g-p-m should be used on desktops too, as it can be used with UPS's
or wireless mice, and also handles DPMS screen power management.
> Anyway, I tried the suspend in the gnome menu and the system did
> suspend and the power button goes slowly on and off, and when I push
> the button, the video does wake up
Is that using the proprietary ati drivers or the free ones?
> and I can type in any open x
> terminals. however, no programs will run. Commands like "/sbin/fdisk
> /dev/sda" just return "command not found." The hard disk appears not
> to be mounted anymore.
I think (kernel issue) SATA drives could be the issue here. Have you got
any more details or dmesg output after suspend please.
> By coincidence, a friend mentioned to me tha the 2.6.16 kernels
> included a SATA patch that allowed the used of hdparm commands on SATA
> drives. So I tested that out. I am able to set the power management
> settings and put the hard disk into standby mode. (don't know yet if
> that makes it cooler). I am also able to put the disk into sleep
> mode, but it never wakes up. And while the disk is still sleeping,
> the system behaves just like it did after the failed restart after
> pm-suspend.
>
> So then I wondered, maybe I should not try to do this at all with a
> desktop PC. Maybe g-p-m is intended only for laptops? Since FC5
> installs wireless tools on systems that have no wireless devices, and
> lots of other unneeded crap, I can't rule out the possibility that
> g-p-m is there by mistake, not intention.
You need g-p-m to do other stuff, see above. The auto-suspend stuff is
just as valid for desktops as laptops IMO.
Richard.
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