1. Fan Speed control.
When I power on my laptop with Ubuntu, the fan speed always (or usually) make lots of noises. Then I find a way to make it being quieter, that's lm_sensors. (but maybe still need to refer to power consumption as item 2.)
- Install lm-sensors
2. power consumption (2.5 hrs to 6 hrs)
- Enable ACPI ASPM
edit /etc/default/grub and add pcie_aspm=force
update-grub
#The major eating-power-monster will be the nvidia and unity3D with compiz, so change to 2D first.
- About acpi_call
git clone http://github.com/mkottman/acpi_call.git
cd acpi_call
make
sudo insmod acpi_call.ko # first trying
--> then copy acpi_call.ko to /lib/module/... and depmod -a
./test_off.sh # you can use this script to find out your "parameter" of acpi_call to disable the nvidia h/w
*** build acpi_call in dkms format under 12.10 ***
apt-get install dkms
put acpi_call folder into /usr/src/acpi_call-0.1
modify Makefile and dkms.conf
Makefile
obj-m := acpi_call.o default: $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules clean: rm acpi_call.mod.o acpi_call.o acpi_call.ko
dkms.conf
PACKAGE_NAME="acpi_call" PACKAGE_VERSION="0.1" CLEAN="make clean" BUILT_MODULE_NAME[0]="acpi_call" DEST_MODULE_NAME[0]="acpi_call" MAKE[0]="make IGNORE_CC_MISMATCH=1 KDIR=$kernel_source_dir PWD=$dkms_tree/acpi_call/0.1/build" DEST_MODULE_LOCATION[0]="/kernel/drivers/acpi" AUTOINSTALL="yes"
build dkms format
sudo dkms add -m acpi_call -v 0.1 sudo dkms build -m acpi_call -v 0.1 sudo dkms install -m acpi_call -v 0.1
(can check the status with "dkms status" command)
and here is the link for reference.
https://wiki.ubuntu.com/Kernel/Dev/DKMSPackaging
http://hybrid-graphics-linux.tuxfamily.org/index.php?title=Acpi_call
---- save these in /etc/rc.local -----
# remove nouveau for nvidia before X
modprobe -r nouveau
# Disable nvidia h/w
modprobe acpi_call
echo "\_SB.PCI0.PEG0.GFX0.DOFF" > /proc/acpi/call
#then reboot, you should have more than 5 hrs power consumption now.
3. Suspend issue (can't fix hibernate yet)
From the solution, looks like the issue caused by usb.
- add the contents below into /etc/pm/sleep.d/20_suspend and chmod to 755
#!/bin/sh
#inspired by http://art.ubuntuforums.org/showpost.php?p=9744970&postcount=19
#...and http://thecodecentral.com/2011/01/18/fix-ubuntu-10-10-suspendhibernate-not-working-bug
# tidied by tqzzaa :)
VERSION=1.1
DEV_LIST=/tmp/usb-dev-list
DRIVERS_DIR=/sys/bus/pci/drivers
DRIVERS="ehci xhci" # ehci_hcd, xhci_hcd
HEX="[[:xdigit:]]"
MAX_BIND_ATTEMPTS=2
BIND_WAIT=0.1
unbindDev() {
echo -n > $DEV_LIST 2>/dev/null
for driver in $DRIVERS; do
DDIR=$DRIVERS_DIR/${driver}_hcd
for dev in `ls $DDIR 2>/dev/null | egrep "^$HEX+:$HEX+:$HEX"`; do
echo -n "$dev" > $DDIR/unbind
echo "$driver $dev" >> $DEV_LIST
done
done
}
bindDev() {
if [ -s $DEV_LIST ]; then
while read driver dev; do
DDIR=$DRIVERS_DIR/${driver}_hcd
while [ $((MAX_BIND_ATTEMPTS)) -gt 0 ]; do
echo -n "$dev" > $DDIR/bind
if [ ! -L "$DDIR/$dev" ]; then
sleep $BIND_WAIT
else
break
fi
MAX_BIND_ATTEMPTS=$((MAX_BIND_ATTEMPTS-1))
done
done < $DEV_LIST
fi
rm $DEV_LIST 2>/dev/null
}
case "$1" in
hibernate|suspend) unbindDev;;
resume|thaw) bindDev;;
esac
