[Dell Latitude C810] the first resume leads directly again to the suspend state, the second resume works

[Christian Leber]

This is on breezy upgraded on 20051202.

With ACPI_SLEEP set to true, suspending works like
with 5.04 (Fn+Esc(Suspend) key combination),
but you have to resume 2 times to get back.

I don't know enough about acpi to fix it myself, but i guess it
might be neccessary to delete the event queue or something like
this before suspending.

I only have this ACPI laptop hardware, therefore i can't reproduce
on other hardware.
(at least Dell Inspiron 8100 should also be affected, because it's
the same board)

[Hiroyuki Ikezoe (ikezoe)]

Panasonic Let's note W4 and Y4 have the same issue.

I found the workaround that calling "touch /var/lock/acpisleep" before screen
lock in /etc/acpi/sleep.sh like the following:

--- sleep.sh.orig 2005-10-21 12:40:39.000000000 +0900
+++ sleep.sh 2005-10-21 12:44:13.000000000 +0900
@@ -15,6 +15,8 @@
     exit;
 fi

+touch /var/lock/acpisleep
+
 if [ x$LOCK_SCREEN = xtrue ]; then
     for x in /tmp/.X11-unix/*; do
        displaynum=`echo $x | sed s#/tmp/.X11-unix/X##`

I don't know why touching lock file solves this issue.

[Hiroyuki Ikezoe (ikezoe)]

In my case, I found the solution.
Please see BUG #24610.

[Christian Leber (christian-leber)]

It seems that this specific problem was fixed with the release of the last
version of acpi-support in 5.10.