[Transformer TF300T Q&A, Help & Troubleshooting] yuraterm:
Still no luck. Look at the output of dmesg:

<6>[ 1.723994] elan-ktf3k 1-0010: [ELAN] Start HW reset!
<5>[ 1.753877] asusdec: [asusdec_dock_init_work_function] TF201 dock-init
<5>[ 1.754013] asusdec: [asusdec_dock_init_work_function] Dock-in detected
<5>[ 1.963873] asusdec: [asusdec_reset_dock] send EC_Request
<7>[ 1.975357] [elan] GPIO_TP_INT_N=60
<6>[ 1.975436] elan-ktf3k 1-0010: The boot code is new!
<5>[ 2.017474] asuspec: [asuspec_chip_init] Model Name: ASUS-TF201-PAD
<5>[ 2.022191] asuspec: [asuspec_chip_init] EC-FW Version: PAD-EC20T-0216
<5>[ 2.033941] asuspec: [asuspec_chip_init] PCBA Version: TF201-PAD-SKU1
<5>[ 2.046222] asuspec: [asuspec_enter_normal_mode] Entering normal mode
<5>[ 2.049214] asuspec: [asuspec_work_function] 0x1 0x0 0xff 0xff
<5>[ 2.053897] asusdec: [asusdec_lid_report_function] SW_LID report value = 0
<5>[ 2.055134] asusdec: [asusdec_kp_smi] ASUSDEC_SMI_HANDSHAKING
<4>[ 2.057059] tegra-i2c tegra-i2c.1: I2c error status 0x0000000a
<4>[ 2.057195] tegra-i2c tegra-i2c.1: no acknowledge from address 0x10
<4>[ 2.057270] tegra-i2c tegra-i2c.1: Packet status 0x00010009
<6>[ 2.057525] elan-ktf3k 1-0010: I2C message no Ack!
<6>[ 2.057602] elan-ktf3k 1-0010: [elan] hello packet's rc = -22
<4>[ 2.057732] Main code fail
<6>[ 2.057808] elan-ktf3k 1-0010: [Elan] Max X=2240, Max Y=1408
<6>[ 2.058052] input: elan-touchscreen as /devices/virtual/input/input1
<4>[ 2.058320] /proc/ektf_dbg created
<6>[ 2.058599] elan-ktf3k 1-0010: [elan] Start touchscreen elan-touchscreen in interrupt mode
<4>[ 2.058791] [ELAN]misc_register finished!!
<6>[ 2.058866] elan-ktf3k 1-0010: Update power source to 0
<4>[ 2.060504] tegra-i2c tegra-i2c.1: I2c error status 0x00000008
<4>[ 2.060581] tegra-i2c tegra-i2c.1: no acknowledge from address 0x10
<4>[ 2.060714] tegra-i2c tegra-i2c.1: Packet status 0x00010009
<3>[ 2.060910] elan-ktf3k 1-0010: [elan] elan_ktf3k_ts_set_power_source: i2c_master_send failed
<6>[ 2.061087] sis_ts_init
<6>[ 2.064291] rtc_tps6591x rtc_tps6591x.0: RTC Time : 3/24/2013 11:6:36
<6>[ 2.066574] tps6591x 4-002d:
<6>[ 2.066579] getting alarm time::
<6>[ 2.066818] rtc_tps6591x rtc_tps6591x.0: RTC Time : 1/1/2000 0:0:0
<6>[ 2.067122] using rtc device, rtc_tps6591x, for alarms
<6>[ 2.067272] rtc_tps6591x rtc_tps6591x.0: rtc core: registered rtc_tps6591x as rtc0
<6>[ 2.072619] rtc_tps6591x rtc_tps6591x.0: RTC Time : 3/24/2013 11:6:36
<4>[ 2.075656] tegra-i2c tegra-i2c.1: I2c error status 0x0000000a
<4>[ 2.075734] tegra-i2c tegra-i2c.1: no acknowledge from address 0x10
<4>[ 2.075867] tegra-i2c tegra-i2c.1: Packet status 0x00010009
<3>[ 2.076015] elan-ktf3k 1-0010: [elan] elan_ktf3k_ts_recv_data: i2c_master_recv error?!
<4>[ 2.077716] tegra-i2c tegra-i2c.1: I2c error status 0x0000000a
<4>[ 2.077851] tegra-i2c tegra-i2c.1: no acknowledge from address 0x10
<4>[ 2.077925] tegra-i2c tegra-i2c.1: Packet status 0x00010009
<5>[ 2.080778] asusdec: [asusdec_chip_init] Model Name: ASUS-TF201-DOCK
<5>[ 2.084231] asusdec: [asusdec_chip_init] EC-FW Version: TF201-DOCK-0207
<5>[ 2.093905] asusdec: [asusdec_chip_init] EC-FW Behavior: susb on when receive ec_req
<6>[ 2.094177] input: asusdec as /devices/platform/tegra-i2c.1/i2c-1/1-0019/input/input2
<6>[ 2.184031] i2c /dev entries driver

And look in attached photo what I see on motherboard :(