Difference between revisions of "Lenovo ThinkPad T530"

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(Thinkpad Specific Modules: loaded by udev)
(Battery Usage for T530: not your blog, duplicates other pages)
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{{hc|1=/etc/modprobe.d/cdc_ncm.conf|2=options cdc_ncm prefer_mbim=N}}
 
{{hc|1=/etc/modprobe.d/cdc_ncm.conf|2=options cdc_ncm prefer_mbim=N}}
 
== Battery Usage for T530 ==
 
 
As a barometer, my Arch system uses about 6.9 watts (as per Powertop) at idle with minimum screen brightness wifi connected. My Fedora install uses about 10 watts idle, and my Windows 7 install uses about 8 watts idle according to the lenovo power manager. Tips to extend battery life:
 
 
* Install powertop and run it as root. Pay special attention to any applications (as opposed to system processes) which cause CPU wakeups. I have had a clipboard manager use .5 watts on its own, so pay special attention to any apps or services you use. Also pay attention to bluetooth and network devices so you can disable them.
 
 
* Use Integrated Graphics mode under Display in the BIOS setup. Even with Nvidia Optimus selected, no applications launched with 'optirun' and the card OFF as listed by
 
 
  cat /proc/acpi/bbswitch
 
 
Powertop still consistently reports .3 watts more idle usage than with Integrated Graphics only mode set in BIOS. If you run Optimus, use
 
 
  cat /proc/acpi/bbswitch
 
 
to check the power status of the nvidia card, and use
 
 
  echo OFF >> /proc/acpi/bbswitch
 
 
to disable it. The power consumption is noticeably less than having the discrete card enabled, but still higher than the Intel card alone. NOTE: You may have to unload the nvidia module first before turning it off: 'rmmod nvidia' as root...
 
 
* Laptop-mode-tools: Install/enable as per the wiki. Nearly all options work fine for the T530. For some reason, the ethernet device (enp0s25) uses upwards of a watt on my system. Laptop-mode-tools doesnt seem to disable this by default, even with /etc/laptop-mode/conf.d/ethernet.conf properly labeled with my ethernet device. If powertop reports such usage, go to /etc/laptop-mode/conf.d/exec-commands.conf and change:
 
 
 
  BATT_EXEC_COMMAND_0="
 
  LM_AC_EXEC_COMMAND_0=""
 
  NOLM_AC_EXEC_COMMAND_0=""
 
 
to
 
 
  BATT_EXEC_COMMAND_0="ip link set enp0s25 down"
 
  LM_AC_EXEC_COMMAND_0="ip link set enp0s25 up"
 
  NOLM_AC_EXEC_COMMAND_0="ip link set enp0s25 up"
 
 
* profile-sync-daemon available in the AUR. When using the web browser on battery, write operations for cache, etc will wakeup the hard drive.  profile-sync-daemon allows all write operations to go to RAM (as the profile is stored there), and then syncs to disk every hour (configurable). This will also reduce the wear on your hard drive, make the web browser feel faster, and reduce write cycles for SSD users.
 
 
* Use 'noatime' in /etc/fstab if access times arent important to you. This is another way to reduce write cycles, and thereby disk wakeups.
 
 
* Dont use any compositing at all. I tried using compton for panel transparency and this increased power consumption consistently by 4-4.5 watts idle using just the Intel card. Powertop will inform you of gpu operations as well.
 
 
  
 
== See also ==
 
== See also ==
  
 
* [https://www.lenovo.com/products/us/tech-specs/laptop/thinkpad/t-series/t530/ Technical specifications]
 
* [https://www.lenovo.com/products/us/tech-specs/laptop/thinkpad/t-series/t530/ Technical specifications]

Revision as of 23:42, 26 September 2015

Installation

See Category:Getting and installing Arch.

GPU

See Bumblebee, or disable the dedicated GPU in the BIOS for power-saving.

Intel HD 4000

See Intel graphics.

NVIDIA NVS 5400M

See Nouveau for open-source driver or NVIDIA for the proprietary driver.

When in discrete graphics mode, The backlight does not work while in UEFI Mode. This limitation does not exist in Legacy Mode.

Input

Hotkeys (Media Keys)

Media keys that work out of the box:

  • Wireless On/Off
  • Backlight Brightness (If you use the nVidia driver, configuration will be needed - see NVIDIA)
  • Thinklight / Keyboard Backlighting
  • Sleep

Keys that do not work out of the box, depending on your DE (you can bind them):

  • Mute
  • Vol+/-
  • Prev/PlayPause/Next
  • Lock
  • Mic Mute (may not register with xev)
  • Fn+F7 - Display Toggle (Projector?)
  • Fn+F6 - WebCam Toggle
  • Launcher (right of Mic Mute)

See Extra keyboard keys for necessary configuration.

Networking

Both the Ethernet and wireless are supported by Arch out of the box. All the available Intel wireless cards are very well supported, including good powersaving. The Lenovo branded (Realtek) card does not work as well and does not support powersaving on Linux.

Ericsson H5321 GW Mobile Broadband modem

The Mobile Broadband modem may need the following change to be made into module settings so that mobile data starts to work.

/etc/modprobe.d/cdc_ncm.conf
options cdc_ncm prefer_mbim=N

See also