[Asus Transformer TF700] jtrosky:
Well, that was quick! Just happened again while I was actively using the system - screen went black and then I eventually get held the power button in for 10 seconds to force it to restart.

I'm going to post the so many lines of /proc/last_kmsg, just in case someone can help with figuring out what is causing this - it's driving me crazy now...

[ 10.574212] asuspec: [asuspec_enter_s3_work_function] EC in S3

[ 11.748324] cpu ext_temperature=36

[ 13.437347] EXT4-fs (mmcblk0p8): warning: maximal mount count reached, running e2fsck is recommended

[ 13.441417] EXT4-fs (mmcblk0p8): ext4_orphan_cleanup: deleting unreferenced inode 1631530

[ 13.441692] EXT4-fs (mmcblk0p8): ext4_orphan_cleanup: deleting unreferenced inode 1630928

[ 13.442060] EXT4-fs (mmcblk0p8): ext4_orphan_cleanup: deleting unreferenced inode 1631506

[ 13.442250] EXT4-fs (mmcblk0p8): ext4_orphan_cleanup: deleting unreferenced inode 1630923

[ 13.442427] EXT4-fs (mmcblk0p8): 4 orphan inodes deleted

[ 13.442501] EXT4-fs (mmcblk0p8): recovery complete

[ 14.204098] EXT4-fs (mmcblk0p8): mounted filesystem with writeback data mode. Opts: (null)

[ 14.242179] EXT4-fs (mmcblk0p1): warning: mounting unchecked fs, running e2fsck is recommended

[ 14.249075] EXT4-fs (mmcblk0p1): mounted filesystem without journal. Opts: (null)

[ 16.758333] cpu ext_temperature=36

[ 21.692573] asuspec: [asuspec_send_ec_req] send EC_Request

[ 21.754642] asuspec: [asuspec_work_function] 0x2 0x81 0x50 0xff

[ 21.754776] asuspec: [asuspec_smi] ASUSPEC_SMI_HANDSHAKING

[ 21.768332] cpu ext_temperature=37

[ 21.961139] pad_get_capacity val->intval=74 ret=75

[ 21.966096] pad_get_psp val->intval=Charging ret=80

[ 22.964282] asuspec: [asuspec_enter_s3_work_function] EC in S3

[ 24.110051] EXT4-fs (mmcblk0p1): warning: mounting unchecked fs, running e2fsck is recommended

[ 24.117153] EXT4-fs (mmcblk0p1): mounted filesystem without journal. Opts: (null)

[ 24.286601] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)

[ 24.591280] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 24.804958] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 26.678260] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 26.778371] cpu ext_temperature=37

[ 26.888323] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 27.993864] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 28.194201] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 28.937026] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 29.134807] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 29.376568] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 29.654758] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 29.932109] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 30.215274] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 30.409599] EXT4-fs (mmcblk0p1): warning: mounting unchecked fs, running e2fsck is recommended

[ 30.416789] EXT4-fs (mmcblk0p1): mounted filesystem without journal. Opts: (null)

[ 30.521383] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 30.522119] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)

[ 30.807420] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 31.100393] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 31.386114] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 31.624952] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 31.788344] cpu ext_temperature=37

[ 31.903083] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 32.187632] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 32.470434] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 32.756551] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 32.959695] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 33.887592] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 34.082406] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 34.855778] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 35.057957] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 35.108451] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)

[ 35.185816] EXT4-fs (mmcblk0p1): warning: mounting unchecked fs, running e2fsck is recommended

[ 35.193211] EXT4-fs (mmcblk0p1): mounted filesystem without journal. Opts: (null)

[ 35.304847] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 35.594131] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 35.878765] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 36.161865] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 36.398671] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 36.679058] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 36.798377] cpu ext_temperature=37

[ 36.964149] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 37.246404] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 37.530375] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 37.813141] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 38.098252] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 38.384318] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 38.582067] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 41.808335] cpu ext_temperature=37

[ 44.764833] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 44.972039] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 46.818327] cpu ext_temperature=37

[ 47.412806] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 47.620935] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 49.993187] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 50.180222] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 51.723023] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 51.828334] cpu ext_temperature=37

[ 51.905823] EXT4-fs (mmcblk0p1): warning: mounting unchecked fs, running e2fsck is recommended

[ 51.913070] EXT4-fs (mmcblk0p1): mounted filesystem without journal. Opts: (null)

[ 51.932053] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 52.188031] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 52.479420] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 52.779071] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 53.066660] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 53.314292] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 53.616175] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 53.915179] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 54.216892] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 54.515943] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 54.817149] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 55.116420] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 55.417600] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 55.716734] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 56.026645] tegradc tegradc.0: Using mode 1920x1200 pclk=154012000 href=0 vref=1

[ 56.838773] cpu ext_temperature=37

[ 61.621986] rt5631_i2c_shutdown+ #####

[ 61.623436] rt5631_i2c_shutdown- #####

[ 61.623575] tegra_dc_shutdown+, ndev->name=tegradc ####

[ 61.623648] tegra_dc_shutdown-, ndev->name=tegradc ####

[ 61.623776] tegra_dc_shutdown+, ndev->name=tegradc ####

[ 61.638397] Check cardhu_panel_disable in TF700T

[ 61.738448] tegra_dc_shutdown-, ndev->name=tegradc ####

[ 61.738634] tegra_ehci_hcd_shutdown instance 2 +

[ 61.738724] tegra_ehci_shutdown instance 2 +

[ 61.738862] tegra_ehci_shutdown instance 2 -

[ 61.738933] tegra_ehci_hcd_shutdown instance 2 -

[ 61.739084] Restarting system.

[ 61.739155]

[ 61.739224] Restarting Linux version 3.1.10-g6e3fd95 (dees_troy@xlii.teamw.in) (gcc version 4.4.3 (GCC) ) #1 SMP PREEMPT Fri Oct 5 16:11:55 EDT 2012

[ 61.739233]

No errors detected

Does any of this mean anything to anyone? I can't tell *why* it shutdown....

Thanks!