Acer Aspire One AOA110 - weird screen shutdown and freeze issue at ~40% battery power

You could try some boot options to disable APCI:

https://help.ubuntu.com/community/BootOptions

You may not get a battery bar but it may get you past 40% battery.

Thanks for the suggestion, actionparsnip. I tried ACPI=off, and indeed the shutdown stopped. I wasn't satisfied by this, however, since I got no battery power bar, ACPI options like suspend etc, which made this half-solution.

Then I stumbled on this thread, in the www.aspireoneuser.com forums:
http://www.aspireoneuser.com/forum/viewtopic.php?f=42&t=13699

I did what user TheTilde suggests there, only converted to ubuntu:

I edited the /etc/rc.local file ( sudo gedit /etc/rc.local ) which (since I had applied the 'increase battery life' tweak shown on the Ubuntu Acer Aspire One community page when installing jaunty) initially looked like this:

[code]# Economize the SSD
sysctl -w vm.swappiness=1 # Strongly discourage swapping
sysctl -w vm.vfs_cache_pressure=50 # Don't shrink the inode cache aggressively

# As in the rc.last.ctrl of Linpus
echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo ondemand > /sys/devices/system/cpu/cpu1/cpufreq/scaling_governor
cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate_max > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/sampling_rate

echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
echo 20 > /proc/sys/vm/dirty_ratio
echo 10 > /proc/sys/vm/dirty_background_ratio

echo 1 > /sys/devices/system/cpu/sched_smt_power_savings
echo 10 > /sys/module/snd_hda_intel/parameters/power_save
echo 5 > /proc/sys/vm/laptop_mode

#Decrease power usage of USB while idle
[ -w /sys/bus/usb/devices/1-5/power/level ] && echo auto > /sys/bus/usb/devices/1-5/power/level
[ -w /sys/bus/usb/devices/5-5/power/level ] && echo auto > /sys/bus/usb/devices/5-5/power/level
[/code]

and commented the #Decrease power usage of USB while idle script so it looked like this:

[code]#Decrease power usage of USB while idle
#[ -w /sys/bus/usb/devices/1-5/power/level ] && echo auto > /sys/bus/usb/devices/1-5/power/level
#[ -w /sys/bus/usb/devices/5-5/power/level ] && echo auto > /sys/bus/usb/devices/5-5/power/level[/code]

So this issue really is a usb to acpi communication problem of that specific script. All ok. Problem solved.

nice one. Glad you got the gold.

Ok,

I recently installed Karmic Koala Netbook Remix. The problem began anew. However, I hadn't applied the tweaks this time, so that I could undo them. Any ideas?

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

I'm afraid the problem still persists. It's frustrating.

Από το iPhone μου

24 Οκτ 2009, 9:14, ο/η Launchpad Janitor <<email address hidden>
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In Karmic, the problem persists I'm afraid. Only way around it is for
exaile to be playing music.

Από το iPhone μου

09 Νοε 2009, 8:53, ο/η Launchpad Janitor <<email address hidden>
d.net> έγραψε:

> Your question #83062 on unr-meta in ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/unr-meta/+question/83062
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> Status: Open => Expired
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> Launchpad Janitor expired the question:
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have you got the latesrt BIOS for your netbook?

Yes, I have 3310 installed.

25 Νοε 2009, 2:36, ο/η actionparsnip <<email address hidden>
d.net> έγραψε:

> Your question #83062 on unr-meta in ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/unr-meta/+question/83062
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> Status: Open => Needs information
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> have you got the latesrt BIOS for your netbook?
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This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Still not working. The only way to avoid shutdown is not to leave the cpu
idle (e.g. having exaile play music).

2009/12/10 Launchpad Janitor <email address hidden>

> Your question #83062 on unr-meta in ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/unr-meta/+question/83062
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> Status: Open => Expired
>
> Launchpad Janitor expired the question:
> This question was expired because it remained in the 'Open' state
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Folks,

I have the exact same problem - with all the same details, although I have not tested as extensively as mistseeker. I had this problem with both 9.10 UNR and now with 10.04 UNR. I do not remember it being there (did not have the issue as far as I remember) for earlier versions.

I have an AAO (110 - ZG5) with a 16GB MMC card in the left slot. To try and resolve the issue, I also upgraded to the latest bios (3310) but it doesn't seem to have solved the problem.

The issue occurs sometime just below 50% battery power and is very repeatable. One thing to note is that this just does not occur at any time when the machine is on power by the adapter. Only occurs on battery.

I am not 100% certain that the whole thing bricks each time - the screen certainly goes blank, and it seems unresponsive, but still, a combination of keys "might" work, I have not tried them all..!. I have tried using the Magic Sys-Req key combos and none of that works...

A hard reset is the only way to get back to working order.

Obviously, would like this fixed if possible. I paid a lot for my larger battery, and only being able to use half of it is a real PITA.

Any help resolving this would be great.

Many thanks,

Mark.