On Tue, 27 Jun 2006, David A. De Graaf wrote:
On Tue, Jun 27, 2006 at 09:22:47AM -0400, Matthew Saltzman wrote:
On Mon, 26 Jun 2006, David A. De Graaf wrote:
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.
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,
too.
OK try the following:
(1) Edit /etc/modprobe.conf and add the following:
options radeonfb radeon_force_sleep=1
(2) Create /etc/sysconfig/mkinitrd containing the following line:
MODULES="radeonfb"
(3) Rebuild your initrd:
mkinitrd -f /boot/initrd-2.6.17-1.2139_FC5.img 2.6.17-1.2139_FC5
(4) Reboot.
(5) Test suspend.
Regrettably, this method has no discernible effect with either kernel.
Kernel 2.6.16-1.2133_FC5 still sleeps and awakens correctly.
Kernel 2.6.17-1.2139_FC5 sleeps, but awakens with a frozen X screen
and keyboard.
OK that fix is known to solve the Radeon power-consumption-in-suspend
problem. It looks like there is still something else going on and using
the radeonfb driver doesn't fix it.
Thanks for the suggestion, though.
It's probably time for me to visit bugzilla.
I guess so, although I still have no problems with the same Radeon chip.
You might look around at thinkwiki.org and www.ces.clemson.edu/linux/
also.
--
Matthew Saltzman
Clemson University Math Sciences
mjs AT clemson DOT edu
http://www.math.clemson.edu/~mjs
