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System UI freezes under high cpu load when sd-card is in the a86
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egalus
Wed Jul 30 2014, 12:28AM
{ASUS_EMPLOYEE}
Registered Member #2422
Joined: Fri Jan 10 2014, 12:03AM
Posts: 56
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Hi,

I finally was able to pin down my system ui freeze problem to the sd-card slot.
Symptom:
CPU/GPU intensive games (like Real Racing 3) lead to system ui freezes on my padfone (regardless of docked or undocked state) for 30-60 seconds. Most of the times the system ui is restarted and the game abruptly continues.
After unsuccessfully trying all available firmware versions (always a clean flash and just installing and testing RR3 afterwards) I today tried RR3 without an sd-card in the phone and was astonished that it did not freeze.
I reinserted the sd-card and voila, system ui freezes again.
I hoped for a defective sd-card, but as I now have tried three different sd-cards and all lead to freezes I am giving up.
Seems like my A86 has a defect related to the sd-card slot...
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mickey
Wed Jul 30 2014, 04:21AM
{ASUS_EMPLOYEE}
Registered Member #2520
Joined: Tue Feb 18 2014, 10:33PM
Posts: 130
Thanked 31 time in 24 post
egalus wrote ...

Hi,

I finally was able to pin down my system ui freeze problem to the sd-card slot.
Symptom:
CPU/GPU intensive games (like Real Racing 3) lead to system ui freezes on my padfone (regardless of docked or undocked state) for 30-60 seconds. Most of the times the system ui is restarted and the game abruptly continues.
After unsuccessfully trying all available firmware versions (always a clean flash and just installing and testing RR3 afterwards) I today tried RR3 without an sd-card in the phone and was astonished that it did not freeze.
I reinserted the sd-card and voila, system ui freezes again.
I hoped for a defective sd-card, but as I now have tried three different sd-cards and all lead to freezes I am giving up.
Seems like my A86 has a defect related to the sd-card slot...


Dude, I have a 64 GB Sandisk UHS-I sd-card (30MB/s - 200x) installed on my NPFI and I have RR3 also installed. Also game data is moved to sd-card and I have none of the problems that you mentioned when playing the game or otherwise.
I would say possible cause of your sd-card problem could be:
1. Low speed card (possibly the main cause)
2. Low quality card from less trusted manufacturer


[ Edited Wed Jul 30 2014, 04:56AM ]
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egalus
Wed Jul 30 2014, 05:10PM
{ASUS_EMPLOYEE}
Registered Member #2422
Joined: Fri Jan 10 2014, 12:03AM
Posts: 56
Thanked 8 time in 6 post
I tried it with 3 different cards (one being the exact same card you mentioned). The game itself resided completely in memory. A freshly formatted SD card with no content does not help either.

I handed it over to Asus today to get it fixed.
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egalus
Fri Aug 22 2014, 03:16AM
{ASUS_EMPLOYEE}
Registered Member #2422
Joined: Fri Jan 10 2014, 12:03AM
Posts: 56
Thanked 8 time in 6 post
Just a little update to this post.
Asus repair contractor seemed to be able to reproduce the error and replaced the mainboard and I got the NPFI back 2 days ago - and I can't believe how this "repaired" device could pass any test.
Now it's main feature are spontanious reboots.
The fastest one during the 7-step setup of the device while I was entering my Wifi password ...
Btw, neither an SD card nor a SIM card need to be inserted for these reboots.

"Well done" Regenersis...
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