Acer Timeline 3830

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Exact hardware model (for me at least)

Acer Aspire (TimelineX) 3830TG

Core i5-2410M 2.3GHz

4GB DDR3 RAM

NVIDIA GeForce GT 540M

750 GB HDD

Atheros wifi (AR9287) b/g/n

(Probably some of these issues only for Arch Linux, e.g. on Ubuntu handling automatically, (Ubuntu is great, but too fat for me) )

[ susu@archie ~ ]$ uname -a
Linux archie 3.0-ARCH #1 SMP PREEMPT Wed Aug 17 21:55:57 CEST 2011 x86_64 Intel(R) Core(TM) i5-2410M CPU @ 2.30GHz GenuineIntel GNU/Linux

Really issues, hardware problems

Sound card issue

Problem: No sound

There is a (Ubuntu) bugreport about the problem: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/783582

There are plenty of comments, but the first one that worked for me: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/783582/comments/33

But if you are too lazy to click, or that page cannot be reached:

Note: some plus package may be needed (python2, pygtk), and change the first line of the file:

#!/usr/bin/env python2

(there must be more elegant solution, but it is pretty fast)

  • run hda_analyzer.py (same workaround may need)
  • find Node[0x1b] PIN and select
  • on Node editor tab check EAPD

(and then my urxvt started to beep, I have to turn that off. UPDATE: I have added this: "/usr/bin/xset b off" to my .xinitrc)

Note: and then both internal speaker and headphone output worked, and also muting if I plug in my headphone (there were some comment at the bugreport about that "auto-muting" does not work).

Oh, of course, I have 3.0 kernel.

UPDATE: I wrote a script about this. That script a hack, not an elegant solution, at least it works. http://dl.dropbox.com/u/4602313/acer-3830-setter.py

Note: I also had to add my user to audio group to use sound card.

Screen backlight issue

Add kernel option acpi_osi=Linux

Step-by-step:

  • Edit /boot/grub/menu.lst
  • Find your system menu entry, and add acpi_osi=Linux kernel option

Mine menu entry looks like:

title  Arch Linux
root   (hd0,6)
kernel /boot/vmlinuz-linux root=/dev/sda7 ro acpi_osi=Linux
initrd /boot/initramfs-linux.img
  • reboot and pray

Note: tested with integrated Intel GPU only

But still an issue that I cannot set brightness value from software (from sysfs), only Fn + Left/Right arrows working.

GPU switch issue

At the moment I turned NVIDIA GPU off from BIOS, later I will provide some info about switching. Until then you can check on Bumblebee

Lighter issues

Wireless

See Wireless Setup.

TODO: create some profiling (and some iptables stuff also would be nice for that network profiling)

CPU frequency scaling

  • install cpufrequtils (if you want to change it from console)
  • modprobe acpi_cpufreq
  • cpufreq-info and cpufreq-set is your friend

(case of Core i5: only two cores, both hyper-threaded. It means there will be four processor device.)

(personal note: I set to 800 MHz for every device (0,1,2,3), but there were no big decrement in /proc/acpi/battery/BAT0/state at present rate.)

TODO: set automatically to ondemand if AC online, and powersave (or conservative) if running on battery

Fn + buttons

ACPI events