How to suspend Dell e6400 laptop?

[yr1945]

the command... echo -n mem > /sys/power/state... makes my laptop go to sleep for just one second and then the screen immediately comes back on again...

[bigpup]

Are you booting and running Puppy from a USB drive.
USB Flash drive or hard drive?

I remember something about suspend made to not work if running from a USB drive.

This code is in suspend.sh

Code: Select all

# do not suspend if usb media mounted
USBS=$(probedisk2|grep '|usb' | cut -d'|' -f1 )
for USB in $USBS
do
mount | grep -q "^$USB" && rm -f "$LOCKFILE" && exit 0
done

[yr1945]

Thanks, but I boot from a CD.

[Marv]

Invoking suspend with the echo command bypasses that USB check. The 1 second delay 'seems' like something is sending an interrupt that the kernel interprets as a power button press. I don't have any hardware that behaves in this manner so it's a bit of a 'thought experiment' for me. Doing that echo command and then entering dmesg in terminal and then looking at the final lines of the output (after a line that contains "suspend entry" in my system) might shed some light on what the kernel is doing. I'll attach those lines from my system doing a normal suspend and wake as an example. When you're ready to call a halt say so, otherwise I'm still puzzled.

@ally Thanks for the check. I replied but must have just previewed and slept. How are you booting?

[ally]

@marv

Code: Select all

  kernel /xenial64_7.5/vmlinuz   psubdir=xenial64_7.5 pmedia=atahd pfix=fsck intel_pstate=disable acpi_osi="!Windows 2012"

grub4dos

[HerrBert]

Are you booting and running Puppy from a USB drive.
USB Flash drive or hard drive?

I remember something about suspend made to not work if running from a USB drive.

This code is in suspend.sh

Code: Select all

# do not suspend if usb media mounted
USBS=$(probedisk2|grep '|usb' | cut -d'|' -f1 )
for USB in $USBS
do
mount | grep -q "^$USB" && rm -f "$LOCKFILE" && exit 0
done

the question should not be if you boot from a USB drive. the script exits if ANY USB MEDIA mounted!