I had the same problem but I installed the 3.8.36.41 and now the computer is not freeze anymore, however my computer now is power off... yes is power off when the computer is under heavy ram usage. I disabled zram ("sudo service zram-config stop") and the computer not power off in the same scenario. I supposed there a still bug in zram. put the syslog for reference. Regards Oct 1 15:13:54 jeguiluz kernel: [ 2701.906285] Adding 6136824k swap on /dev/sdb2. Priority:-1 extents:1 across:6136824k Oct 1 15:14:10 jeguiluz kernel: [ 2717.244280] zram: module is from the staging directory, the quality is unknown, you have been warned. Oct 1 15:14:10 jeguiluz kernel: [ 2717.244898] zram: Creating 2 devices ... Oct 1 15:14:10 jeguiluz kernel: [ 2717.332517] Adding 1205796k swap on /dev/zram0. Priority:5 extents:1 across:1205796k SS Oct 1 15:14:10 jeguiluz kernel: [ 2717.332886] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.332906] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.333088] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.333100] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.333110] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.333120] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.333134] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.333204] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.333215] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.333240] Buffer I/O error on device zram0, logical block 301449 Oct 1 15:14:10 jeguiluz kernel: [ 2717.349381] Adding 1205796k swap on /dev/zram1. Priority:5 extents:1 across:1205796k SS Oct 1 15:14:39 jeguiluz kernel: [ 2746.194838] CPUM: APIC 01 at 00000000fee00000 (mapped at ffffc9001119c000) - ver 0x80050010, lint0=0x10700 lint1=0x10400 pc=0x00400 thmr=0x10000 Oct 1 15:14:39 jeguiluz kernel: [ 2746.194885] CPUM: APIC 00 at 00000000fee00000 (mapped at ffffc9001119a000) - ver 0x80050010, lint0=0x10700 lint1=0x00400 pc=0x00400 thmr=0x10000 Oct 1 15:14:40 jeguiluz kernel: [ 2747.680768] device eth0 entered promiscuous mode Oct 1 15:17:05 jeguiluz CRON[4906]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Oct 1 15:17:29 jeguiluz kernel: [ 2916.054517] Write-error on swap-device (251:0:2411592) Oct 1 15:17:30 jeguiluz kernel: [ 2917.495329] Write-error on swap-device (251:0:2411592) Oct 1 15:17:32 jeguiluz kernel: [ 2919.075216] Write-error on swap-device (251:0:2411592) Oct 1 15:17:34 jeguiluz kernel: [ 2921.122104] Write-error on swap-device (251:0:2411592) Oct 1 15:17:35 jeguiluz kernel: [ 2922.737142] Write-error on swap-device (251:0:2411592) Oct 1 15:17:36 jeguiluz kernel: [ 2923.524709] Write-error on swap-device (251:0:2411592) Oct 1 15:17:37 jeguiluz kernel: [ 2924.541654] Write-error on swap-device (251:1:2411592) Oct 1 15:17:38 jeguiluz kernel: [ 2925.099164] Write-error on swap-device (251:1:2411592) Oct 1 15:17:38 jeguiluz kernel: [ 2925.613590] Write-error on swap-device (251:1:2411592) Oct 1 15:17:39 jeguiluz kernel: [ 2926.196338] Write-error on swap-device (251:1:2411592) Oct 1 15:17:39 jeguiluz kernel: [ 2926.702036] Write-error on swap-device (251:1:2411592) Oct 1 15:17:40 jeguiluz kernel: [ 2927.192068] Write-error on swap-device (251:1:2411592) Oct 1 15:17:40 jeguiluz kernel: [ 2927.640755] Write-error on swap-device (251:1:2411592) Oct 1 15:17:41 jeguiluz kernel: [ 2928.942213] Write-error on swap-device (251:1:2411592) Oct 1 15:17:43 jeguiluz kernel: [ 2930.419452] Write-error on swap-device (251:1:2411592) Oct 1 15:17:44 jeguiluz kernel: [ 2931.982384] Write-error on swap-device (251:1:2411592) Oct 1 15:17:46 jeguiluz kernel: [ 2933.506097] Write-error on swap-device (251:1:2411592) Oct 1 15:17:47 jeguiluz kernel: [ 2934.696195] Write-error on swap-device (251:1:2411592) Oct 1 15:17:49 jeguiluz kernel: [ 2936.083184] Write-error on swap-device (251:1:2411592) Oct 1 15:17:50 jeguiluz kernel: [ 2937.226936] Write-error on swap-device (251:1:2411592) Oct 1 15:17:51 jeguiluz kernel: [ 2938.649758] Write-error on swap-device (251:1:2411592) Oct 1 15:17:52 jeguiluz kernel: [ 2939.995108] Write-error on swap-device (251:1:2411592) Oct 1 15:17:54 jeguiluz kernel: [ 2941.299012] Write-error on swap-device (251:1:2411592) Oct 1 15:17:55 jeguiluz kernel: [ 2942.148133] Write-error on swap-device (251:1:2411592) Oct 1 15:17:56 jeguiluz kernel: [ 2943.225112] Write-error on swap-device (251:1:2411592) Oct 1 15:17:56 jeguiluz kernel: [ 2943.908878] Write-error on swap-device (251:1:2411592) Oct 1 15:17:57 jeguiluz kernel: [ 2944.419249] Write-error on swap-device (251:1:2411592) Oct 1 15:17:57 jeguiluz kernel: [ 2944.913138] Write-error on swap-device (251:1:2411592) Oct 1 15:17:58 jeguiluz kernel: [ 2945.413372] Write-error on swap-device (251:1:2411592) Oct 1 15:17:58 jeguiluz kernel: [ 2945.894133] Write-error on swap-device (251:1:2411592) Oct 1 15:17:59 jeguiluz kernel: [ 2946.269116] Write-error on swap-device (251:1:2411592) Oct 1 15:17:59 jeguiluz kernel: [ 2946.519047] Write-error on swap-device (251:0:2411592) Oct 1 15:17:59 jeguiluz kernel: [ 2946.737003] Write-error on swap-device (251:1:2411592) Oct 1 15:17:59 jeguiluz kernel: [ 2946.953120] Write-error on swap-device (251:0:2411592) Oct 1 15:18:00 jeguiluz kernel: [ 2947.148483] Write-error on swap-device (251:1:2411592) Oct 1 15:18:00 jeguiluz kernel: [ 2947.476174] Write-error on swap-device (251:0:2411592) Oct 1 15:18:00 jeguiluz kernel: [ 2947.660220] Write-error on swap-device (251:1:2411592) Oct 1 15:18:00 jeguiluz kernel: [ 2948.025074] Write-error on swap-device (251:1:2411592) Oct 1 15:18:01 jeguiluz kernel: [ 2948.470698] Write-error on swap-device (251:1:2411592) Oct 1 15:18:01 jeguiluz kernel: [ 2948.924717] Write-error on swap-device (251:1:2411592) Oct 1 15:18:02 jeguiluz kernel: [ 2949.415187] Write-error on swap-device (251:1:2411592) Oct 1 15:18:03 jeguiluz kernel: [ 2950.088740] Write-error on swap-device (251:1:2411592) Oct 1 15:18:03 jeguiluz kernel: [ 2950.588627] Write-error on swap-device (251:1:2411592) Oct 1 15:18:04 jeguiluz kernel: [ 2951.220798] Write-error on swap-device (251:1:2411592) Oct 1 15:18:04 jeguiluz kernel: [ 2951.751184] Write-error on swap-device (251:1:2411592) Oct 1 15:18:05 jeguiluz kernel: [ 2952.509408] Write-error on swap-device (251:1:2411592) Oct 1 15:18:06 jeguiluz kernel: [ 2953.250971] Write-error on swap-device (251:1:2411592) Oct 1 15:18:06 jeguiluz kernel: [ 2954.035798] Write-error on swap-device (251:1:2411592) Oct 1 15:18:07 jeguiluz kernel: [ 2954.584766] Write-error on swap-device (251:1:2411592) Oct 1 15:18:07 jeguiluz kernel: [ 2955.017581] Write-error on swap-device (251:0:2411592) Oct 1 15:18:08 jeguiluz kernel: [ 2955.066967] Write-error on swap-device (251:1:2411592) Oct 1 15:18:08 jeguiluz kernel: [ 2955.428279] Write-error on swap-device (251:1:2411592) Oct 1 15:18:09 jeguiluz kernel: [ 2956.457167] Write-error on swap-device (251:1:2411592) Oct 1 15:18:10 jeguiluz kernel: [ 2957.251259] Write-error on swap-device (251:1:2411592) Oct 1 15:18:10 jeguiluz kernel: [ 2957.719531] Write-error on swap-device (251:1:2411592) Oct 1 15:18:11 jeguiluz kernel: [ 2958.269333] Write-error on swap-device (251:1:2411592) Oct 1 15:18:12 jeguiluz kernel: [ 2959.281825] Write-error on swap-device (251:1:2411592) Oct 1 15:18:12 jeguiluz kernel: [ 2959.974988] Write-error on swap-device (251:1:2411592) Oct 1 15:18:13 jeguiluz kernel: [ 2960.375468] Write-error on swap-device (251:1:2411592) Oct 1 15:18:13 jeguiluz kernel: [ 2960.935923] Write-error on swap-device (251:1:2411592) Oct 1 15:18:14 jeguiluz kernel: [ 2961.612164] Write-error on swap-device (251:1:2411592) Oct 1 15:18:15 jeguiluz kernel: [ 2962.259934] Write-error on swap-device (251:1:2411592) Oct 1 15:18:16 jeguiluz kernel: [ 2963.093319] Write-error on swap-device (251:1:2411592) Oct 1 15:18:16 jeguiluz kernel: [ 2963.777361] Write-error on swap-device (251:1:2411592) Oct 1 15:18:16 jeguiluz kernel: [ 2963.994435] Write-error on swap-device (251:0:2411592) Oct 1 15:18:17 jeguiluz kernel: [ 2964.343798] Write-error on swap-device (251:1:2411592) Oct 1 15:18:17 jeguiluz kernel: [ 2964.792923] Write-error on swap-device (251:1:2411592) Oct 1 15:18:18 jeguiluz kernel: [ 2965.411419] Write-error on swap-device (251:1:2411592) Oct 1 15:18:19 jeguiluz kernel: [ 2966.389092] Write-error on swap-device (251:1:2411592) Oct 1 15:18:20 jeguiluz kernel: [ 2967.165173] Write-error on swap-device (251:1:2411592) Oct 1 15:18:20 jeguiluz kernel: [ 2968.036339] Write-error on swap-device (251:1:2411592) Oct 1 15:18:21 jeguiluz kernel: [ 2968.847968] Write-error on swap-device (251:1:2411592) Oct 1 15:18:22 jeguiluz kernel: [ 2969.374133] Write-error on swap-device (251:1:2411592) Oct 1 15:18:22 jeguiluz kernel: [ 2970.042824] Write-error on swap-device (251:1:2411592) Oct 1 15:18:23 jeguiluz kernel: [ 2970.437301] Write-error on swap-device (251:1:2411592) Oct 1 15:18:23 jeguiluz kernel: [ 2971.033186] Write-error on swap-device (251:1:2411592) Oct 1 15:18:24 jeguiluz kernel: [ 2971.543310] Write-error on swap-device (251:1:2411592) Oct 1 15:18:25 jeguiluz kernel: [ 2972.722437] Write-error on swap-device (251:1:2411592) Oct 1 15:18:26 jeguiluz kernel: [ 2973.921446] Write-error on swap-device (251:1:2411592) Oct 1 15:18:27 jeguiluz kernel: [ 2974.409812] Write-error on swap-device (251:1:2411592) Oct 1 15:18:28 jeguiluz kernel: [ 2975.267936] Write-error on swap-device (251:1:2411592) Oct 1 15:18:28 jeguiluz kernel: [ 2976.030896] Write-error on swap-device (251:1:2411592) Oct 1 15:18:29 jeguiluz kernel: [ 2976.470545] Write-error on swap-device (251:1:2411592) Oct 1 15:18:30 jeguiluz kernel: [ 2977.362505] Write-error on swap-device (251:1:2411592) Oct 1 15:18:30 jeguiluz kernel: [ 2977.939153] Write-error on swap-device (251:1:2411592) Oct 1 15:18:31 jeguiluz kernel: [ 2978.996420] Write-error on swap-device (251:1:2411592) Oct 1 15:18:32 jeguiluz kernel: [ 2979.471238] Write-error on swap-device (251:1:2411592) Oct 1 15:18:32 jeguiluz kernel: [ 2980.042652] Write-error on swap-device (251:1:2411592) Oct 1 15:18:33 jeguiluz kernel: [ 2980.445676] Write-error on swap-device (251:1:2411592) Oct 1 15:18:33 jeguiluz kernel: [ 2980.971108] Write-error on swap-device (251:1:2411592) Oct 1 15:18:34 jeguiluz kernel: [ 2981.342097] Write-error on swap-device (251:1:2411592) Oct 1 15:18:34 jeguiluz kernel: [ 2981.914295] Write-error on swap-device (251:1:2411592) Oct 1 15:18:35 jeguiluz kernel: [ 2982.599904] Write-error on swap-device (251:1:2411592) Oct 1 15:18:36 jeguiluz kernel: [ 2983.694686] Write-error on swap-device (251:1:2411592) Oct 1 15:18:37 jeguiluz kernel: [ 2984.283585] Write-error on swap-device (251:1:2411592) Oct 1 15:18:37 jeguiluz kernel: [ 2984.680614] Write-error on swap-device (251:1:2411592) Oct 1 15:18:38 jeguiluz kernel: [ 2986.019097] Write-error on swap-device (251:1:2411592) Oct 1 15:18:40 jeguiluz kernel: [ 2987.417207] Write-error on swap-device (251:1:2411592) Oct 1 15:18:41 jeguiluz kernel: [ 2988.346392] Write-error on swap-device (251:1:2411592) Oct 1 15:18:42 jeguiluz kernel: [ 2989.292750] Write-error on swap-device (251:1:2411592) Oct 1 15:18:42 jeguiluz kernel: [ 2990.031454] Write-error on swap-device (251:1:2411592) Oct 1 15:18:43 jeguiluz kernel: [ 2990.730998] Write-error on swap-device (251:1:2411592) Oct 1 15:18:44 jeguiluz kernel: [ 2991.851815] Write-error on swap-device (251:1:2411592) Oct 1 15:18:45 jeguiluz kernel: [ 2992.454037] Write-error on swap-device (251:1:2411592) Oct 1 15:18:46 jeguiluz kernel: [ 2993.267006] Write-error on swap-device (251:1:2411592) Oct 1 15:18:46 jeguiluz kernel: [ 2993.387809] Write-error on swap-device (251:0:2411592) Oct 1 15:18:46 jeguiluz kernel: [ 2993.884369] Write-error on swap-device (251:1:2411592) Oct 1 15:18:47 jeguiluz kernel: [ 2994.087393] Write-error on swap-device (251:0:2411592) Oct 1 15:18:47 jeguiluz kernel: [ 2994.815331] Write-error on swap-device (251:1:2411592) Oct 1 15:18:49 jeguiluz kernel: [ 2996.145708] Write-error on swap-device (251:1:2411592) Oct 1 15:18:50 jeguiluz kernel: [ 2997.512718] Write-error on swap-device (251:1:2411592) Oct 1 15:18:51 jeguiluz kernel: [ 2998.157207] Write-error on swap-device (251:1:2411592) Oct 1 15:18:51 jeguiluz kernel: [ 2998.837639] Write-error on swap-device (251:1:2411592) Oct 1 15:18:52 jeguiluz kernel: [ 2999.430047] Write-error on swap-device (251:1:2411592) Oct 1 15:18:53 jeguiluz kernel: [ 3000.605609] Write-error on swap-device (251:1:2411592) Oct 1 15:18:54 jeguiluz kernel: [ 3001.116478] Write-error on swap-device (251:1:2411592) Oct 1 15:18:55 jeguiluz kernel: [ 3002.183222] Write-error on swap-device (251:1:2411592) Oct 1 15:19:00 jeguiluz kernel: [ 3007.106811] Write-error on swap-device (251:1:2411592) Oct 1 15:19:04 jeguiluz kernel: [ 3011.492496] Write-error on swap-device (251:1:2411592) Oct 1 15:19:08 jeguiluz kernel: [ 3015.225168] Write-error on swap-device (251:1:2411592) Oct 1 15:19:09 jeguiluz kernel: [ 3016.478808] Write-error on swap-device (251:1:2411592) Oct 1 15:19:09 jeguiluz kernel: [ 3017.019319] Write-error on swap-device (251:0:2411592) Oct 1 15:19:10 jeguiluz kernel: [ 3017.665349] Write-error on swap-device (251:1:2411592) Oct 1 15:19:10 jeguiluz kernel: [ 3018.043712] Write-error on swap-device (251:0:2411592) Oct 1 15:19:11 jeguiluz kernel: [ 3018.383282] Write-error on swap-device (251:1:2411592) Oct 1 15:19:12 jeguiluz kernel: [ 3019.355326] Write-error on swap-device (251:1:2411592) Oct 1 15:19:13 jeguiluz kernel: [ 3020.231961] Write-error on swap-device (251:1:2411592) Oct 1 15:19:14 jeguiluz kernel: [ 3021.945409] Write-error on swap-device (251:1:2411592) Oct 1 15:19:16 jeguiluz kernel: [ 3023.297262] Write-error on swap-device (251:1:2411592) Oct 1 15:19:16 jeguiluz kernel: [ 3023.980680] Write-error on swap-device (251:1:2411592) Oct 1 15:19:18 jeguiluz kernel: [ 3025.161983] Write-error on swap-device (251:1:2411592) Oct 1 15:19:18 jeguiluz kernel: [ 3025.597447] Write-error on swap-device (251:1:2411592) Oct 1 15:19:18 jeguiluz kernel: [ 3026.008656] Write-error on swap-device (251:1:2411592) Oct 1 15:19:19 jeguiluz kernel: [ 3026.495687] Write-error on swap-device (251:1:2411592) Oct 1 15:19:19 jeguiluz kernel: [ 3027.009092] Write-error on swap-device (251:1:2411592) Oct 1 15:19:20 jeguiluz kernel: [ 3027.451483] Write-error on swap-device (251:1:2411592) Oct 1 15:19:21 jeguiluz kernel: [ 3028.121911] Write-error on swap-device (251:1:2411592) Oct 1 15:19:22 jeguiluz kernel: [ 3029.467004] Write-error on swap-device (251:1:2411592) Oct 1 15:19:26 jeguiluz kernel: [ 3033.349563] Write-error on swap-device (251:1:2411592) Oct 1 15:19:29 jeguiluz kernel: [ 3036.205226] Write-error on swap-device (251:1:2411592) Oct 1 15:19:32 jeguiluz kernel: [ 3039.394952] Write-error on swap-device (251:1:2411592) Oct 1 15:19:35 jeguiluz kernel: [ 3042.166313] Write-error on swap-device (251:1:2411592) Oct 1 15:19:35 jeguiluz kernel: [ 3043.032713] Write-error on swap-device (251:1:2411592) Oct 1 15:19:36 jeguiluz kernel: [ 3043.872851] Write-error on swap-device (251:1:2411592) Oct 1 15:19:39 jeguiluz kernel: [ 3046.131994] Write-error on swap-device (251:1:2411592) Oct 1 15:19:40 jeguiluz kernel: [ 3047.461346] Write-error on swap-device (251:1:2411592) Oct 1 15:19:42 jeguiluz kernel: [ 3049.975170] ata1: exception Emask 0x10 SAct 0x0 SErr 0x1810000 action 0xe frozen Oct 1 15:19:42 jeguiluz kernel: [ 3049.975178] ata1: irq_stat 0x00400000, PHY RDY changed Oct 1 15:19:42 jeguiluz kernel: [ 3049.975182] ata1: SError: { PHYRdyChg LinkSeq TrStaTrns } Oct 1 15:19:42 jeguiluz kernel: [ 3049.975188] ata1: hard resetting link Oct 1 15:19:42 jeguiluz kernel: [ 3049.975201] ata3.00: exception Emask 0x10 SAct 0x1 SErr 0x1810000 action 0xe frozen Oct 1 15:19:42 jeguiluz kernel: [ 3049.975203] ata3.00: irq_stat 0x00400000, PHY RDY changed Oct 1 15:19:42 jeguiluz kernel: [ 3049.975205] ata3: SError: { PHYRdyChg LinkSeq TrStaTrns } Oct 1 15:19:42 jeguiluz kernel: [ 3049.975209] ata3.00: failed command: READ FPDMA QUEUED Oct 1 15:19:42 jeguiluz kernel: [ 3049.975214] ata3.00: cmd 60/03:00:30:e6:da/00:00:0d:00:00/40 tag 0 ncq 1536 in Oct 1 15:19:43 jeguiluz kernel: [ 3049.975214] res 40/00:00:30:e6:da/00:00:0d:00:00/40 Emask 0x10 (ATA bus error) Oct 1 15:19:43 jeguiluz kernel: [ 3049.975217] ata3.00: status: { DRDY } Oct 1 15:19:43 jeguiluz kernel: [ 3049.975219] ata3: hard resetting link Oct 1 15:19:44 jeguiluz kernel: [ 3051.970667] Write-error on swap-device (251:1:2411592) Oct 1 15:19:46 jeguiluz kernel: [ 3053.776247] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Oct 1 15:19:46 jeguiluz kernel: [ 3053.776379] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Oct 1 15:19:46 jeguiluz kernel: [ 3053.880119] ata1.00: configured for UDMA/133 Oct 1 15:19:46 jeguiluz kernel: [ 3053.880167] ata1: EH complete Oct 1 15:19:46 jeguiluz kernel: [ 3053.936141] ata3.00: configured for UDMA/133 Oct 1 15:19:46 jeguiluz kernel: [ 3053.936244] ata3: EH complete Oct 1 15:19:49 jeguiluz kernel: [ 3057.010143] Write-error on swap-device (251:1:2411592) Oct 1 15:20:00 jeguiluz kernel: [ 3067.685598] Write-error on swap-device (251:1:2411592) Oct 1 15:20:04 jeguiluz kernel: [ 3071.732538] Write-error on swap-device (251:1:2411592) Oct 1 15:20:12 jeguiluz kernel: [ 3080.037699] Write-error on swap-device (251:0:2411592) Oct 1 15:21:42 jeguiluz kernel: imklog 5.8.6, log source = /proc/kmsg started. Oct 1 15:21:42 jeguiluz rsyslogd: [origin software="rsyslogd" swVersion="5.8.6" x-pid="957" x-info="http://www.rsyslog.com"] start Oct 1 15:21:42 jeguiluz rsyslogd: rsyslogd's groupid changed to 103 Oct 1 15:21:42 jeguiluz rsyslogd: rsyslogd's userid changed to 101 Oct 1 15:21:42 jeguiluz rsyslogd-2039: Could not open output pipe '/dev/xconsole' [try http://www.rsyslog.com/e/2039 ] Oct 1 15:21:42 jeguiluz kernel: [ 0.000000] Initializing cgroup subsys cpuset Oct 1 15:21:42 jeguiluz kernel: [ 0.000000] Initializing cgroup subsys cpu Oct 1 15:21:42 jeguiluz kernel: [ 0.000000] Linux version 3.8.0-31-generic (buildd@panlong) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #46~precise1-Ubuntu SMP Wed Sep 11 18:21:16 UTC 2013 (Ubuntu 3.8.0-31.46~precise1-generic 3.8.13.8) Oct 1 15:21:42 jeguiluz kernel: [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.8.0-31-generic root=UUID=6a809a7e-48bf-4c58-8c86-588ff97ccc92 ro