Hi, This is a new Dual Light that came with the preloaded memory card. The system wouldn't boot, and nothing showed with the serial interface. I downloaded the latest copy of UDOObuntu 2.0 (Ubuntu 14.04) from the download site, 7 un-zipped it and then wrote it to the card, after formatting it. Unit now boots to an UDOO screen then goes black. Putty reveals what's pasted below (some lines removed to allow pasting to this post). It gets no farther than the last line below ( [ 2.265594] [<80abea80>] (start_kernel) from [<10008074>] (0x10008074) ) Any help would be greatly appreciated! Thanks! Code: U-Boot SPL 2015.10-00061-g68849f9 (Jan 08 2016 - 17:01:43) U-Boot 2015.10-00061-g68849f9 (Jan 08 2016 - 17:01:43 +0100) CPU: Freescale i.MX6DL rev1.1 at 792 MHz Reset cause: POR Board: UDOO DualLite DRAM: 1 GiB MMC: FSL_SDHC: 0 *** Warning - bad CRC, using default environment auto-detected panel HDMI Display: HDMI (1024x768) In: serial Out: serial Err: serial Net: using phy at 6 FEC [PRIME] Hit any key to stop autoboot: 0 switch to partitions #0, OK mmc0 is current device reading uEnv.txt 52 bytes read in 9 ms (4.9 KiB/s) Running bootscript from mmc ... Device Tree: dts/imx6dl-udoo-hdmi.dtb reading zImage 4546472 bytes read in 255 ms (17 MiB/s) Booting from mmc ... reading dts/imx6dl-udoo-hdmi.dtb 40329 bytes read in 24 ms (1.6 MiB/s) Kernel image @ 0x12000000 [ 0x000000 - 0x455fa8 ] ## Flattened Device Tree blob at 18000000 Booting using the fdt blob at 0x18000000 Using Device Tree in place at 18000000, end 1800cd88 Starting kernel ... [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 3.14.56-udooqdl-02015-g8c051b6 (udooer@udoo) (gcc v ersion 4.8.4 (Ubuntu/Linaro 4.8.4-2ubuntu1~14.04.1) ) #2 SMP PREEMPT Wed Apr 27 11:37:54 UTC 2016 [ 0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instructio n cache [ 0.000000] Machine model: UDOO Dual-lite Board [ 0.000000] cma: CMA: reserved 320 MiB at 3c000000 [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] PERCPU: Embedded 8 pages/cpu @ab733000 s8256 r8192 d16320 u32768 [ 0.000000] Kernel command line: console=ttymxc1,115200 root=/dev/mmcblk0p2 r ootwait rw [ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes) [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000000] Virtual kernel memory layout: Data removed here to allow posting: [ 0.000000] failed to set parent of clk gpu2d_core_sel to pll2_pfd1_594m: -22 [ 0.000000] Switching to timer-based delay loop [ 0.000006] sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 14 31655765682ns Date removed here [ 1.069473] console [ttymxc1] enabled [ 1.070011] 21f0000.serial: ttymxc3 at MMIO 0x21f0000 (irq = 61, base_baud = 5000000) is a IMX [ 1.070368] serial: Freescale lpuart driver [ 1.071528] imx sema4 driver is registered. [ 1.071583] [drm] Initialized drm 1.1.0 20060810 [ 1.072024] [drm] Initialized vivante 1.0.0 20120216 on minor 0 [ 1.076214] loop: module loaded [ 1.080694] imx-ipuv3 2400000.ipu: WARNING: adapt panel end blank lines [ 1.081160] 2188000.ethernet supply phy not found, using dummy regulator [ 1.127378] imx-ipuv3 2400000.ipu: WARNING: adapt panel end blank lines [ 1.193834] pps pps0: new PPS source ptp0 [ 1.205922] libphy: fec_enet_mii_bus: probed [ 1.206453] fec 2188000.ethernet eth0: registered PHC device 0 [ 1.206896] mousedev: PS/2 mouse device common for all mice [ 1.207558] input: st1232-touchscreen as /devices/soc0/soc.0/2100000.aips-bus /21a8000.i2c/i2c-2/2-0055/input/input0 [ 1.208755] snvs_rtc 20cc034.snvs-rtc-lp: rtc core: registered 20cc034.snvs-r tc-lp as rtc0 [ 1.208885] i2c /dev entries driver [ 1.210019] mxc_v4l2_output v4l2_out.21: V4L2 device registered as video16 [ 1.210173] mxc_v4l2_output v4l2_out.21: V4L2 device registered as video17 [ 1.211243] imx2-wdt 20bc000.wdog: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=0) [ 1.211495] sdhci: Secure Digital Host Controller Interface driver [ 1.211498] sdhci: Copyright(c) Pierre Ossman [ 1.211500] sdhci-pltfm: SDHCI platform and OF driver helper [ 1.212244] mmc0: no vqmmc regulator found [ 1.212250] mmc0: no vmmc regulator found [ 1.263429] mmc0: SDHCI controller on 2198000.usdhc [2198000.usdhc] using ADM A [ 1.263956] Galcore version 5.0.11.25762 [ 1.465968] mmc0: host does not support reading read-only switch. assuming wr ite-enable. [ 1.475424] mmc0: new high speed SDHC card at address 59b4 [ 1.484949] mmcblk0: mmc0:59b4 USD 7.51 GiB [ 1.505003] mmcblk0: p1 p2 [ 1.806361] mxc_vdoa 21e4000.vdoa: i.MX Video Data Order Adapter(VDOA) driver probed [ 1.806889] mxc_vpu 2040000.vpu: VPU initialized [ 1.840553] imx-ipuv3 2400000.ipu: WARNING: adapt panel end blank lines [ 1.873745] VT1613 SoC Audio Codec [ID = 5649 - 4121] [ 1.877924] imx-ac97-vt1613 sound.17: vt1613-hifi-analog <-> 2028000.ssi mapp ing ok [ 1.882524] imx-audio-hdmi sound-hdmi.18: hdmi-hifi <-> hdmi_audio.3 mapping ok [ 1.883649] nf_conntrack version 0.5.0 (16044 buckets, 64176 max) [ 1.884251] TCP: cubic registered [ 1.884259] NET: Registered protocol family 17 [ 1.884304] Key type dns_resolver registered [ 1.884748] failed to disable 1.2 GHz OPP [ 1.885457] ThumbEE CPU extension supported. [ 1.886074] usb_otg_vbus: disabling [ 1.886079] usb_h1_vbus: disabling [ 1.886090] regulator-dummy: disabling [ 1.886354] imx mcc test is registered. [ 1.886996] snvs_rtc 20cc034.snvs-rtc-lp: setting system clock to 1970-01-01 00:00:00 UTC (0) [ 1.887957] imx_thermal tempmon.10: Commercial CPU temperature grade [ 1.887965] imx_thermal tempmon.10: max:95C crit:90C passive:85C [ 1.897874] ALSA device list: [ 1.897885] #0: imx-vt1613-audio [ 1.897887] #1: imx-hdmi-soc [ 2.100606] EXT4-fs (mmcblk0p2): couldn't mount as ext3 due to feature incomp atibilities [ 2.109341] EXT4-fs (mmcblk0p2): couldn't mount as ext2 due to feature incomp atibilities [ 2.127233] JBD2: no valid journal superblock found [ 2.132121] EXT4-fs (mmcblk0p2): error loading journal [ 2.138222] Kernel panic - not syncing: VFS: Unable to mount root fs on unkno wn-block(179,2) [ 2.146668] CPU0: stopping [ 2.149387] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.14.56-udooqdl-02015-g 8c051b6 #2 [ 2.157419] [<800145a4>] (unwind_backtrace) from [<80011488>] (show_stack+0x1 0/0x14) [ 2.165176] [<80011488>] (show_stack) from [<80511d40>] (dump_stack+0x7c/0xbc ) [ 2.172407] [<80511d40>] (dump_stack) from [<80013530>] (handle_IPI+0x144/0x1 58) [ 2.179809] [<80013530>] (handle_IPI) from [<80008514>] (gic_handle_irq+0x58/ 0x5c) [ 2.187388] [<80008514>] (gic_handle_irq) from [<80011f80>] (__irq_svc+0x40/0 x70) [ 2.194872] Exception stack(0x80afff18 to 0x80afff60) [ 2.199927] ff00: 80aff f60 3b9aca00 [ 2.208109] ff20: 7fc00bad 00000000 7f8e53d0 00000000 ab7340d0 80b0b8e4 00000 001 ab7340d4 [ 2.216292] ff40: 80afe000 80afe000 a6aaaaab 80afff60 00000009 8036f4b8 60000 113 ffffffff [ 2.224484] [<80011f80>] (__irq_svc) from [<8036f4b8>] (cpuidle_enter_state+0 x50/0xe0) [ 2.232410] [<8036f4b8>] (cpuidle_enter_state) from [<8036f644>] (cpuidle_idl e_call+0xfc/0x150) [ 2.241116] [<8036f644>] (cpuidle_idle_call) from [<8000eda4>] (arch_cpu_idle +0x8/0x44) [ 2.249131] [<8000eda4>] (arch_cpu_idle) from [<80064fcc>] (cpu_startup_entry +0x104/0x150) [ 2.257408] [<80064fcc>] (cpu_startup_entry) from [<80abea80>] (start_kernel+ 0x2e0/0x2ec) [ 2.265594] [<80abea80>] (start_kernel) from [<10008074>] (0x10008074)