[Acer Iconia A500] mdeejay:
v.1.1.0:
- New base 4.010.22_COM_GEN1
- New kernel UNITY V5
- Updated Maps
- Updated TweetComb
- Updated FriendMe
v.1.0.8:
- Newest kernel UNITY V2
- Fixed random reboots
- Other minor tweaks
v.1.0.7:
- Back to Asus 3.1 base
- New custom kernel UNITY V1 with OC support (1600MHz max)
- Enabled 1080p video out
- Remoived eBook
- Removed PressReader
- Updated AcerSync
- Removed Asus DLNA
- Added Acer DLNA
- Updated Clearfi
- Updated nemoPlayer
- Updated 3D Photo Browser
- Added SocialJogger
- Added Asus Reader
- Replaced clock font
- Added Acer weather widget
- Other minor fixes & tweaks
v.1.0.6:
- Improved media_profiles
- Added Asus buttons
- Fixed 3G modems support
- Added CIFS/TUN modules
- Other minor fixes & tweaks
v.1.0.5:
- New base: leaked Acer update Acer_A500_3.019_COM_GEN1 (Honeycomb 3.1)
- New kernel: 2.6.36.3-00005-g5dff38c
v.1.0.4:
- Fixed 3G support
- Updated TweetComb
- Improved ramdisk
- Improved updater-script
- Other minor fixes & system tweaks
v.1.0.3:
- Updated kernel
- Added Memo from SGT 10.1
- Added Aurora & Bluesea live wallpapers from SGT 10.1
- Added DoubleClock widget from SGT 10.1
- Added Photo Editor from SGT 10.1
- Added Ebook from SGT 10.1
- Fixed hardware decoding H264, etc
- Added symlinks to external_sd & usb_storage
- Other minor fixes & tweaks
v.1.0.2:
- Added SketchMemoPlus
- Updated Layar
- Removed Asus PCSync
- Added Magic Smoke Live wallpapers
- Added AcerSync
- Added link to Adobe Flash Player
- Added ApInAp (with English & Rusian translations)
- alot ROM cleanups
- Updated PolarisOffice from Asus Transformer
- Updated ES File Explorer
-
v.1.0.1:
- Speed up animation
- Ported Camera app from Acer (with storage select)
- Updated Clearfi
- Other minor tweaks & cleanups
v.1.0.0:
- Initial release

This ROM features a completely new way of Overclocking and managing screen states.

The History

But before explaining it further, let's talk about previous solutions.

There are several different approaches to archieve "screen-state-scaling".

That means basically that the govenor changes if you turn the screen off and changes back to normal when turning the screen on.

This is mainly used to restrict the amount of CPU usage (the frequency in fact) during screen off. This can lead to a major battery life increase.

The solutions so far were:

App like SetCPU, which change automatically the govenor based on profiles

integrated solutions in the govenor itself

Both these solutions have major problems.

The one with a tuner app is always a little laggy right after turning on the screen because SetCPU (or any other CPU tuner) needs some time to change the govenors (up to 7 seconds). This leads mostly to major lag in the lockscreen.

The second solution is the smartass govenor. It has already a screen-state-scaling included, so it reduces the frequency when the screen turn off.

This could be a really nice solution but it has some problems too.

Smartass most of the time is not really stable and has problems with its frequency scaling.

State-of-the-art-solution

So we (more precisely rmk40) thought of a better solution.

He wrote a native C Daemon which changes the govenors

instantly without any lag.

This leads to

major performance improvements

right after turning on the screen and in the lockscreen.

But at the moment this solution is a little bit harder to configure. We are plaing to make a GUI for this, so you get the same comfort as using SetCPU.

Nevertheless you can even now adjust the daemon to your needs.

Be aware that the daemon only works if all CPU tuner apps are deinstalled. Otherwise it deactivates itself.

The daemon is configured with 6 files in the folder /system/etc/virtuous_oc/.

There are 3 files for the wake state and 3 for the sleep state. For each state one file for the govenor, one for the minimal frequency and one for the maximal frequency.

You can easily edit these files eg. with RootExplorer or any other app which can edit system files. So you can adjust the frequencies and the govenor for each state just like with SetCPU.

In order to get the available frequencies for the current kernel, just open your favorite terminal app and type

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies

You could also use adb shell to show the frequencies on your computer.

To get the available govenors use a similar approach:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors

Please make sure, you are entering the right values in the daemon's config files.

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