kernel-2.6.17-1.2139_FC5 won't sleep
David A. De Graaf
dad at datix.us
Mon Jun 26 21:25:48 UTC 2006
On Sat, Jun 24, 2006 at 09:51:36PM -0400, Matthew Saltzman wrote:
> On Sat, 24 Jun 2006, David A. De Graaf wrote:
> >With kernel-2.6.17-1.2139_FC5 my IBM T30 laptop will no longer enter sleep
> >mode. More accurately, it won't wake up. When I close the lid and later
> >reopen it, the old XFCE4 display lights up, but is frozen. Nothing works -
> >CTL-ALT-F2, CTL-ALT-BS. The only option is to press and hold the power
> >button to shutdown and reboot.
> >I was so proud of myself for finally figuring out how to make the sleep
> >mode work with the broken FC5. The documentation is mighty sparse.
> >If I create these additional files, sleep mode seems to work, although
> >I'm not sure that the battery drain is as low as it used to be:
> Actually, on my T41, FC5 is the first release to suspend/resume correctly
> right out of the box (modulo an issue with powering off the graphics chip
> that's been around for a while and has a known workaround). But I can
> think of a few points to consider. For one thing, I'm running GNOME.
One might hope that the window manager would simply manage windows and
have no effect on the sleep function - but that would be probably be
utopian and naive.
> Were you using APM or ACPI in FC4?
I misspoke that sleep mode works in FC4. Apparently that was
remembered from an even earlier time, say, FC3. Sorry!
> Did you update from FC4 or do a fresh install? Do you have pm-utils
I freshly installed FC5, but I retained a separate partition with the
entire FC4 system. By rebooting the FC4 system, I found that sleep
mode didn't work there, either. In the earlier system that did work I
must have been using APM, because I only recently learned about ACPI,
and the new control files that must be added to make sleep work.
I do have pm-utils installed, but don't knowingly use any of the 11
programs contained because there are only 2 man pages, and one of them
is wrong - on_ac_power returns 0 with or without the charger connected.
Call me a coward, but I lack enthusiasm for blindly trying programs that
suggest they might irreversibly change the state of my machine.
> What's your video card? Are you seeing the machine indicate that it's
> suspended properly but just stay hot and drain the battery? What part of
> the machine stays hot?
lspci says my IBM T30 laptop has this:
01:00.0 VGA compatible controller: ATI Technologies Inc
Radeon Mobility M7 LW [Radeon Mobility 7500]
I haven't accurately measured the comparative rates of battery
discharge while asleep vs. awake because it takes a long time to do
the experiment. I will, though.
I do have the subjective recollection that when the earlier non-ACPI
system slept, the battery drain was very, very low.
Now, after pressing Fn-F4 to enter sleep mode, I can see that the screen,
although blank, seems to still have the backlight on. That would seem
to use power unnecessarily, but I can't find any way to turn that off,
> Are you logged in when you suspend?
Yes, certainly. I'm running X, and xfce4.
I've also just tried sleeping from a basic console - with no X running -
with both kernel 2.6.16-1.2133_FC5 and 2.6.17-1.2139_FC5.
Both kernels sleep and awaken satisfactorily. Therefore the failure of
the newer kernel to awaken with X running is almost surely a misfunction
with the X server.
David A. De Graaf DATIX, Inc. Hendersonville, NC
dad at datix.us www.datix.us
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