Recent button doesn't work after lollipop update? - Samsung Galaxy Alpha

Hi guys,
i updated my galaxy alpha to lollipop but i found a little big problem: recent button doen's work anymore. It doens't even light when pressed. I read some threads here on xda about people experiencing this issue and i decided to open a new thread to try to fix this kind of problem.
As first "fix" i found helpful enable the super sensitive touch.
And you guys?

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if u a using the G850f model, try to backup your data. Then do a complete data and cache wipe (hard reset) then install a clean lolipop update and see if it will work.
Sent from my SM-G850F using Tapatalk

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Mbofhor said:
if u a using the G850f model, try to backup your data. Then do a complete data and cache wipe (hard reset) then install a clean lolipop update and see if it will work.
Sent from my SM-G850F using Tapatalk
Click to expand...
Click to collapse
I have same issue. And tried to backup my data and install a clean lollipop. Doesn't work.

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Yes i tried it too but doesn't work.

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tried it all. Flash, reflash, downgrade upgrade but no luck. it only works if i downgrade to 4.4. I also tried dowgrading to a xef csc kk then upgrading to lollipop xef but the damn key doesnt wanna work.
if i wipe from recovery then it goes through but givea an error saying somethibg **** E: cant find storage​

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i see the s5 topic they have problem like you...recent app and home key for them dos not worck ... im going to update mine to nighte i report my work wish me luck

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ok i just finish flashing android 5 ...im from iran and my recent butten worck fine..my phone was not rooted before

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I know exactly the answer to the Recent app keys not working after lollipop update. It only doesn't work when phone is in high temperature. I also experienced it but when i let my phone cool down. It worked perfectly fine

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robry28 said:
I know exactly the answer to the Recent app keys not working after lollipop update. It only doesn't work when phone is in high temperature. I also experienced it but when i let my phone cool down. It worked perfectly fine
Click to expand...
Click to collapse
Yup you are right - however my phone is cool but still no left key. if i put it in the fridge then it works for a few mins.
on 4.4 never had this issue.

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xef personal conclusion
hy, im from romania and flashed in odin the xef lollipop last night
till now no problem, works like a charm, slightly more performant than kk and more battery saver, recent app button works, im happy, so far no issues! ...finger cross....
fore the ones with issues try to update like me, with odin in these steps:
!!! charge phone battery to 100% with wall plug and make sure your phone is a free carrier type - the SM-G850F. download the france lollipop xef from samsung firmware site and download odin 3.10 from same place. unpack odin to a folder and then unpack the firmware downloaded to same odin folder.
1. backup to pc, cloud, etc. all you need - optional, but dont cry after for loosing your naked girl pics
2. shut down phone and make a factory reset - enter with volum up+home+power
DO NOT RESET THE CACHE - ONLY RESET DATA/FACTORY RESET
3. start odin and after this restart from earlier bootloader, let the phone start normally like after every normal reset but when ask for setup (first window screen where asks for language, accessibility, etc) dont begin anything and shut down the phone - press power and choose shutdown
4. start phone in download mode with vol. down+home+power and when in, select continue, a window with odin mode will appear
5. now connect phone to pc and in odin should appear as recognised, the square become blue and shows the com port number
6. in odin select the AP button and choose the firmware unpacked, unzipped, with the .md5 at the end of the name
7. make sure the RE-PARTITION checkhole is unchecked and the freset time and autorestart are checked, and hit start to begin flash
8. be patient and wait to finnish, it has several steps like copying (a blue line in download mode), restarting and upgrading/deleting things, restarting again and showing the galaxy alpha logo - DO NOT TOUCH IT, LET THE PHONE TO FINNISH, and after few minutes the amazing setup window appear !
9. disconnect the phone from computer, close odin, and shut down the phone!
10. start the phone in bootloader with vol. up+home+power and make a factory reset/wipe data but do not delete/reset the cache after, just data/factory reset
11. restart phone and enjoy your lollipop
if all this is made like i said then you should encounter no issues!
give feedback for help or if issues appear!

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same problem
same me
try to very clean all flash
no backup, no use old file.
i try to flash with new clean phone.
soft left button not work too.

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natz said:
same me
try to very clean all flash
no backup, no use old file.
i try to flash with new clean phone.
soft left button not work too.
Click to expand...
Click to collapse
Mine also not working when phone is high temperature. Try cooling it down

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I have updated to lollipop without any reset.
Have not found any bugs jet.
I was wondering maybe it has something to do with the region your phone comes from, according to the recent button not working?

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I had the same problem, and I did this:
Went to Chrome - Settings - Combine Tabs and Apps. I deactivated the option, and by mistake, hit the back button, and started working.
Eventhough the option is Deactivated, when I press the left button, I can see Chorme's tabs wtithin the Recents Apps.
After that had to install and app from Google Play, and after doing so, the button stoped working again. I restarted de phone, and 20 minutes later, the button started working. I have no clue of what's going on.
kepiro said:
hy, im from romania and flashed in odin the xef lollipop last night
till now no problem, works like a charm, slightly more performant than kk and more battery saver, recent app button works, im happy, so far no issues! ...finger cross....
fore the ones with issues try to update like me, with odin in these steps:
!!! charge phone battery to 100% with wall plug and make sure your phone is a free carrier type - the SM-G850F. download the france lollipop xef from samsung firmware site and download odin 3.10 from same place. unpack odin to a folder and then unpack the firmware downloaded to same odin folder.
1. backup to pc, cloud, etc. all you need - optional, but dont cry after for loosing your naked girl pics
2. shut down phone and make a factory reset - enter with volum up+home+power
DO NOT RESET THE CACHE - ONLY RESET DATA/FACTORY RESET
3. start odin and after this restart from earlier bootloader, let the phone start normally like after every normal reset but when ask for setup (first window screen where asks for language, accessibility, etc) dont begin anything and shut down the phone - press power and choose shutdown
4. start phone in download mode with vol. down+home+power and when in, select continue, a window with odin mode will appear
5. now connect phone to pc and in odin should appear as recognised, the square become blue and shows the com port number
6. in odin select the AP button and choose the firmware unpacked, unzipped, with the .md5 at the end of the name
7. make sure the RE-PARTITION checkhole is unchecked and the freset time and autorestart are checked, and hit start to begin flash
8. be patient and wait to finnish, it has several steps like copying (a blue line in download mode), restarting and upgrading/deleting things, restarting again and showing the galaxy alpha logo - DO NOT TOUCH IT, LET THE PHONE TO FINNISH, and after few minutes the amazing setup window appear !
9. disconnect the phone from computer, close odin, and shut down the phone!
10. start the phone in bootloader with vol. up+home+power and make a factory reset/wipe data but do not delete/reset the cache after, just data/factory reset
11. restart phone and enjoy your lollipop
if all this is made like i said then you should encounter no issues!
give feedback for help or if issues appear!
Click to expand...
Click to collapse

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raleau said:
I had the same problem, and I did this:
Went to Chrome - Settings - Combine Tabs and Apps. I deactivated the option, and by mistake, hit the back button, and started working.
Eventhough the option is Deactivated, when I press the left button, I can see Chorme's tabs wtithin the Recents Apps.
After that had to install and app from Google Play, and after doing so, the button stoped working again. I restarted de phone, and 20 minutes later, the button started working. I have no clue of what's going on.
Click to expand...
Click to collapse
Thank bro. I'll try this.

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raleau said:
I had the same problem, and I did this:
Went to Chrome - Settings - Combine Tabs and Apps. I deactivated the option, and by mistake, hit the back button, and started working.
Eventhough the option is Deactivated, when I press the left button, I can see Chorme's tabs wtithin the Recents Apps.
After that had to install and app from Google Play, and after doing so, the button stoped working again. I restarted de phone, and 20 minutes later, the button started working. I have no clue of what's going on.
Click to expand...
Click to collapse
Still doesn't work.

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I always do factory reset, dalvic & cash & than flash new rom,ater instalig it I wipe dalvic again .
All working ,except in new Eudemony V4(5.0.2) deodex break recovery & stack on EULA Data conection.

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possible solution - NONE, till region versions come out
i start to believe more and more that this issue has to do with region scrambling software glitches - scientifically said
probably some regions are compatible and some aren't

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I tried to change the settings in display settings by increasing the sensitivity and it works. Eureka!:victory:
Try it for yourself.. go to settings under display.

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Same issue will it work with other 5.x roms?
I have the same issue. I have not rooted this phone yet. I sent it back to Virgin and they downgraded it back to 4.4.4 then sent it back "fixed". Since I got no feedback I thought it must have been an issue during the update. So I updated again and Recent apps is still not working. I am using an app that brings up the menu for now. I am hoping that 5.1 will fix this issue anyone know the odds on that? Also I am willing to root and loose warranty IF it will work under a custom Rom (or will it not because the ROM would be based on 5.0.1?) Is downgrading pretty risky? I have only rooted with my nexus 4 and moto G and only ran Cyangenmod. so I am not sure of the risks of downgrading. (I remember it being risky in my iphone days). Any thoughts or suggestions?