Improve energy consumption with Ubuntu and Lenovo IdeaPad Z370 (sandy bridge-chipset)

Update 2015-03-15: As Antiplex mentioned in the comments, the resources are slighlty out of date. An update is pending

I use my laptop (Lenovo Z370, with Ubuntu 11.10) a lot in the college. Unfortunatly there aren’t enough plugs in the wall for all students and I’m not willing to bring a plug board with me every time. So my approach to the problem was to improve the energy consumption of my laptop. I already had an energy plan with display dimming after two minutes and deactivate bluetooth by default (I don’t have any bluetooth gadget, so why bother).

Continue reading Improve energy consumption with Ubuntu and Lenovo IdeaPad Z370 (sandy bridge-chipset)

Ubuntu 11.10 + Lenovo Ideapad Z370

Two days ago I’ve updated Ubuntu to 11.10 and it worked well.

I started from scratch, so I won’t have to deal with “old” problems:

Here is my setup:

  • Plain vanilla Lenovo Z370
  • Harddrive was replaced by a 60 Gb Sata2 SSD
  • Ubuntu 11.10 (Desktop edition)
  • I installed the IdeaPad Driver Package (get it here) to get rid of a lot of the “Keycode 240”

On the pro side:

  • The sd-card reader works out of the f**king box!
  • The key manager works!
  • Fn + F1 = Suspend to ram!
  • Fn + F2 = Switch the Backlite off
  • Fn + F5 = Switch all wireless connections off
  • Fn + F8 = Activates Num “block”
  • Fn +F9-F12 = Media keys (Play, Stop, Next, Previous) tested in Banshee
  • Fn + Arrow left + Arrow right = Louder and quiter

On the down side:

  • Special keys 1-3 kill the deskop
  • Special keys 4-5 didn’t work
  • Frequently sended “keycode 240” interupts the standby
  • Fn functions:
  • Fn + Esc = Nothing happens (should disable the camera)
  • Fn + F4 = No function (should do …)
  • Fn + F6 = No function (should disable the touchpad)
  • Fn + Arrow Up, Arrow Down (is a little bit buggy) (Should adjust the intensity of the backlite)


  • HDMI connection with my 23″ Monitor
  • Fn + F3 = Switch between display modes (for beamer and external displays)


  • The new Ubuntu feels like it uses more energy (which I can’t prove right now)

New task: Get my sd-card reader working…

New task of the day: Get my sd-card reader in my laptop working. My Lenovo IdeaPad is nice and everything but sometimes there are some annoying things. Like a not working sd-card reader. There absolut no reaction on Ubuntu if I insert a sd-card… Maybe, I will find out 🙂

rmmod ehci_hcd doesn’t work
“echo “usb-storage” >> /etc/modules; modprobe usb-storage” was promising, but doesn’t work either

What do I know? My laptop has a “Realtek Semiconductor Corp.” sd-card reader.
If I insert an sd-card, dmesg will show


Wohoo, 11.10 fixes this problem! I’m able to use sd-cards! Not that I realy use them, but it’s nice to know, I could