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Acer Aspire TimelineUltra M5-481T-6642


This laptop is something in between a traditional laptop and an ultrabook, it has an optical drive but not a VGA port.

This page is just for discussing using Linux on the Acer Aspire TimelineUltra M5-481T-6642. For a general discussion about this laptop you can visit the Acer Aspire TimelineUltra M5-481T-6642 page on LapWik.

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For full specifications see the Acer Aspire TimelineUltra M5-481T-6642 specifications page.

NameAcer Aspire TimelineUltra M5-481T-6642
ProcessorIntel Core i5-3317M (dual-core, 1.7 GHz with Turbo Boost up to 2.6 GHz, 3 MB L3 cache)
1366 x 768 pixels (HD), 16:9 aspect ratio
112 ppi pixel density
Active Matrix TFT Color LCD
LED backlight & CineCrystal technology
RAMUp to 6 GB
HDD500 GB 5400 rpm HDD
20 GB SSD (Hybrid)
Optical Drive8X DVDRW DL
GraphicsIntel HD Graphics 4000
NetworkGigabit Ethernet(RJ-45 port)
Broadcom 43228 802.11 a/g/n or Atheros AR9462

Linux Compatibility

Graphics ChipWorks
HDMI OutWorksAudio and video :) see the notes below
Optical DriveWorks
Microphone PortNot Tested
Headphone PortWorks
WirelessWorksTested for Atheros AR9462 with the solution below
BluetoothDoes not work Tested for Atheros AR9462
Card ReaderworksTested with a micro SD card inside an adapter
KeyboardWorkseven the backlight Fn+F9 works
TouchPadWorks Use Ctrl+Fn+F7 to enable



Before doing anything check your wireless card model with

  lspci | grep -i wireless

(You can also tether the wifi, through usb, from an android phone)

Atheros AR9462

There is a known issue (for many Atheros AR9xxx cards) related to the kernel version, see here:

My sugestion is to use

  echo "options ath9k nohwcrypt=1" >> /etc/modprobe.d/ath9.conf

Broadcom 43228

There is a known issue described at the bottom of this page:, to fix this my sugestion is

  apt-get install laptop-mode-tools

and then “set WIRELESS_BATT_POWER_SAVING=0 within /etc/laptop-mode/conf.d/wireless-power.conf”


The first time I tried to use the HDMI (with gnome 3 and pulseAudio) the thing didn't worked, a “dummy device” apeared, to get rid of it use (not with root, with your normal user)

  pulseaudio --kill
  pulseaudio --start

now is working with “Digital Stereo (HDMI) Output + Analog Stereo Input” in the hardware tab of the gnome sound settings


There are two ways to enable it:

  • Press Fn+F7 before logging in.
  • Press Ctrl+Fn+F7 once logged in.

Card reader

In order to make it work I had to place a card in the slot and reboot the system with the card inside.

USB Mouse

The usb mouse freezes, to fix this what I did was to install the `laptop-mode-tools`

  apt-get install laptop-mode-tools

then use


to get the mouse USB ID, something like `abcd:1234`, and then place that in the `AUTOSUSPEND_USBID_BLACKLIST` within the file



to fix it (if you have the Atheros AR9462 card) I recommend you read this


You can enter a summary of how well the Acer Aspire TimelineUltra M5-481T-6642 works with Linux here.


boclodoa, 2014/02/01 02:37

Warning: windows restore process after linux installation left my computer without been able to boot or access BIOS, I think it could be related with this (user guide p. 72):

Before performing a restore operation, please check the BIOS settings.
1. Check to see if Acer disk-to-disk recovery is enabled or not.
2. Make sure the D2D Recovery setting in Main is Enabled.
3. Exit the BIOS utility and save changes. The system will reboot.
Note: To activate the BIOS utility, press <F2> during POST.

user guide available in the acer site.
service manual:

EDIT: after getting the computer to the service center the problem appears to be a kind of lock of the HDD, taking out the HDD the computer is able to access BIOS and boots normally from an USB flash.

Abrown, 2013/06/18 05:27

I am having issues with the screen backlight not working. Orrignially the “Fn+Left,right” command was working great on Ubuntu 13.04. I installed burg bootloader and the started happening as it was when I was running 12.10. This may be purly coincidental, but has anyone experinced anything like this?
Aditionally I can conferm the issue of the WiFi (and ethernet) occationally dropping, like some other users had reported.

boclodoa, 2013/07/21 22:14

Backlight controls are working for me out of the box with “Fn+Left,right,F6”, tested in debian wheezy, and jessie

boclodoa, 2013/03/31 06:39

Note: the card Atheros AR9462 has both: wifi and bluetooth

user, 2012/12/12 00:46

I'm trying to edit this page but I can't find the way, may be the “edit this page” button is missing.

The laptop works very well (Debian Wheezy, and Ubuntu 12.04) but there are a few things to know:

You must enable the touch pad before logging in (Fn F7).

The wireless does not work perfectly, it goes down every 5 or ten minutes, really annoying but usable.

The bluetooth does not work at all, you cannot see other devices nor they can see you.

lovely things:
- suspend mode works very well (Fn f4), the battery can last a whole day with, say, 4 hours of real use.
- the gnome 3 feels smooth

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acer_aspire_timelineultra_m5-481t-6642.txt · Last modified: 2014/02/08 15:57 by
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