[Asus Transformer TF700] Arquiteto:
I have TF700 Infinity with Cromi-X 4.6.9 installed, running hundsbuah's 3.0.6 kernel with Data2SD enabled. I use SanDisk 32GB Mobile Ultra Micro SDHC card, formatted using gparted on Parted Magic linux. Fsync is enabled.

I noticed that my experience with Data2SD is deteriorating. Fresh after formatting Micro SD it works perfectly fine, but after week or two some random freezes start to occur (most often when running app's but sometimes even at lockscreen) forcing me to reboot. With more number of reboots freezes get more often after I'm desperate enough to format Micro SD again and reinstall. I've been trying with _that kernel, but it was no difference. Is that a problem of my SD Card or with Infinity? How can I fix it?

Here is the part of content of last_kmsg

[ 1789.970823] Switched to NOHz mode on CPU #1
[ 1792.498820] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1
[ 1792.971434] cpu_down(3)+
[ 1792.973679] CPU3: shutdown
[ 1792.975627] edp_update_limit: Limiting cpu speed from 1500000 to 1500000 during boot!
[ 1792.976218] cpu_down(3)-
[ 1794.117317] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1
[ 1794.841849] cpu ext_temperature=37
[ 1795.971717] cpu_down(2)+
[ 1795.975049] CPU2: shutdown
[ 1795.977786] edp_update_limit: Limiting cpu speed from 1500000 to 1500000 during boot!
[ 1795.978965] cpu_down(2)-
[ 1797.990758] mmcblk1: error -110 transferring data, sector 36657736, nr 344, cmd response 0x900, card status 0xb00
[ 1797.991805] mmcblk1: retrying using single block read
[ 1798.981523] cpu_down(1)+
[ 1798.982526] CPU1: shutdown
[ 1798.983655] edp_update_limit: Limiting cpu speed from 1600000 to 1500000 during boot!
[ 1798.984118] cpu_down(1)-
[ 1799.638992] mmcblk1: error -110 transferring data, sector 36657736, nr 344, cmd response 0x900, card status 0x0
[ 1799.639284] [mmc]:mmc_blk_issue_rw_rq:1101 SD freq. down to UHS_SDR12_MAX_DTR
[ 1799.642246] mmcblk1: timed out sending r/w cmd command, card status 0x400b00
[ 1799.642518] mmcblk1: command error, retrying timeout
[ 1800.322357] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1
[ 1802.446926] mmcblk1: error -110 transferring data, sector 36657737, nr 343, cmd response 0x900, card status 0xb00
[ 1802.449065] mmcblk1: retrying using single block read
[ 1804.863463] cpu ext_temperature=34
[ 1805.248817] mmcblk1: error -110 transferring data, sector 36657737, nr 343, cmd response 0x900, card status 0x0
[ 1805.251672] mmcblk1: timed out sending r/w cmd command, card status 0x400b00
[ 1805.251929] mmcblk1: command error, retrying timeout
[ 1808.053001] mmcblk1: error -110 transferring data, sector 36657738, nr 342, cmd response 0x900, card status 0xb00
[ 1808.053064] mmcblk1: retrying using single block read
[ 1810.851446] mmcblk1: error -110 transferring data, sector 36657738, nr 342, cmd response 0x900, card status 0x0
[ 1810.853818] mmcblk1: timed out sending r/w cmd command, card status 0x400b00
[ 1810.853875] mmcblk1: command error, retrying timeout
[ 1813.657813] mmcblk1: error -110 transferring data, sector 36657739, nr 341, cmd response 0x900, card status 0xb00
[ 1813.659954] mmcblk1: retrying using single block read
[ 1814.883548] cpu ext_temperature=32
[ 1816.459651] mmcblk1: error -110 transferring data, sector 36657739, nr 341, cmd response 0x900, card status 0x0
[ 1816.462061] mmcblk1: timed out sending r/w cmd command, card status 0x400b00
[ 1816.462161] mmcblk1: command error, retrying timeout
[ 1818.411499] gpio_keys: Pressed KEY_POWER
[ 1819.262896] mmcblk1: error -110 transferring data, sector 36657740, nr 340, cmd response 0x900, card status 0xb00
[ 1819.263004] mmcblk1: retrying using single block read
[ 1822.059974] mmcblk1: error -110 transferring data, sector 36657740, nr 340, cmd response 0x900, card status 0x0
[ 1822.067079] mmcblk1: timed out sending r/w cmd command, card status 0x400b00
[ 1822.069317] mmcblk1: command error, retrying timeout
[ 1824.877483] mmcblk1: error -110 transferring data, sector 36657741, nr 339, cmd response 0x900, card status 0xb00
[ 1824.879788] mmcblk1: retrying using single block read
[ 1824.902545] cpu ext_temperature=31

13422 Corrected bytes, 16 unrecoverable blocks

Also after last reinstall I noticed that I can't access ext4 partition of my sdcard. In /storage I see emulated, sdcard0 and sdcard1. Emulated and sdcard0 lead to data that are on my internal sdcard, sdcard1 is empty. However, data2SD is working, because i tested with androbench and the random write speed is 0.3-0.4Mbps and when I removed the Micro SD card from a slot the system booted with all my apps gone, so it made me sure, that my regular installation is on external sd.