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How to setup ART and restore in recovery for KitKat 4.4/CM11 ROM

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By Windows X, Senior Member on 22nd January 2014, 10:20 AM
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I've just tested ART feature from friend's recommendation. After activating ART in my CM11 ROM, NFC and Themes Provider keep crashing and phone is not usable. So I think it's good idea to share how to revert ART setting without wiping phone or restore from backup.

Instructions to revert ART
1. Boot into recovery.
2. Run adb shell to access terminal.
3. Type 'rm /data/property/persist.sys.dalvik.vm.lib' This will remove setting default VM runtime to ART.
4. Clear Dalvik cache and reboot. Your phone should run normally now.

Instructions to set ART again
1. Boot into recovery.
2. Run adb shell to access terminal.
3. Type 'echo "libart.so" > /data/property/persist.sys.dalvik.vm.lib' This set default VM to art library file.
4. Clear Dalvik cache and reboot. Your phone should run with ART VM now.

Hope this helps.
Last edited by Windows X; 22nd January 2014 at 10:24 AM.
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12th March 2014, 03:27 PM |#2  
desalesouche's Avatar
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tested on huawei honor (u8860)
desalesouche@NoGiveUp:~$ adb shell
~ # echo "libart.so" > /data/property/persist.sys.dalvik.vm.lib
/sbin/sh: can't create /data/property/persist.sys.dalvik.vm.lib: nonexistent directory

any suggestion? thank you.
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3rd April 2014, 03:22 PM |#3  
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hi.
the solution to get art fully working was the following one:
replacing dalvik.vm.dexopt-data-only=0 with dalvik.vm.dexopt-data-only=1 and all went fine...(build.prop)
at least it worked for me. hope it would help.
4th April 2014, 07:39 AM |#4  
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You need to mount the data partition before running the commands mentioned in the first post there...
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29th May 2014, 02:56 AM |#5  
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This saved my ass! Switched to ART and after reboot, settings would only FC. Could not change anything or switch back through Dev Options. Thank you!!!!

Sent from my HTC6525LVW using Tapatalk
2nd July 2014, 08:04 PM |#6  
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Thanks for the instruction. You save me as I don't have PC now and my custom ROM not support ART.
25th October 2014, 06:56 AM |#7  
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excuse me, i've been try to switch to art with adb shell, and my phone is boot up but can't get into home screen, it just stuck on starting apps? why ya?
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4.4, art, cm11, dalvik, kitkat
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