Just tried to USB boot Ubuntu 14.04 and it failed to load.
The last few lines said:
[15.284012] kernel offset disabled
[15.284012] --- [end kernel panic - not syncing: VFS: unable to mount root fs on unknown-block [2.0]
[25.332033] random: nonblocking pool is initialized
Also when I do a disk check with the Ubuntu USB program it says everything is good, but right before the scan starts I get about 8 errors. The three I have posted above in my original post and similar "PIPE" and "CPU" errors mostly. One of the errors was PVC or PVS, can't remember it flashed by quick. If helpful I could maybe take a picture of it to get the exact error codes.
some of my var/log/kern.log.1
kernel: [ 14.393665] [drm] Memory usable by graphics device = 128M
kernel: [ 14.393676] checking generic (e8000000 1e0000) vs hw (e8000000 8000000)
kernel: [ 14.393681] fb: switching to inteldrmfb from VESA VGA
kernel: [ 14.393746] Console: switching to colour dummy device 80x25
kernel: [ 14.394105] [drm] Replacing VGA console driver
kernel: [ 14.411865] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
kernel: [ 14.411874] [drm] Driver supports precise vblank timestamp query.
kernel: [ 14.412007] [drm:intel_parse_bios [i915]] *ERROR* Child device config size 27 is too small.
kernel: [ 14.412217] vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem
wns=io+mem
kernel: [ 14.472087] [drm] GMBUS [i915 gmbus panel] timed out, falling back to bit banging on pin 3
kernel: [ 14.614325] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* pipe A underrun
kernel: [ 14.627250] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* pipe B underrun
kernel: [ 14.627304] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
kernel: [ 14.656777] [drm] initialized overlay support
kernel: [ 14.659290] [drm] Initialized i915 1.6.0 20150522 for 0000:00:02.0 on minor 0
kernel: [ 14.751833] fbcon: inteldrmfb (fb0) is primary device
kernel: [ 14.752084] Console: switching to colour frame buffer device 128x48
kernel: [ 14.752122] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
kernel: [ 14.752126] i915 0000:00:02.0: registered panic notifier
and some more...
[ 22.812443] [drm] GMBUS [i915 gmbus panel] timed out, falling back to bit banging on pin 3
[ 22.846745] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* pipe A underrun
[ 22.847046] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[ 22.855890] [drm] initialized overlay support
[ 22.855989] [drm] Initialized i915 1.6.0 20150522 for 0000:00:02.0 on minor 0
Some more...
usbcore: registered new interface driver snd-usb-audio
[ 361.000150] [drm] stuck on render ring
[ 361.003143] [drm] GPU HANG: ecode 2:0:0x7c63ffca, in Xorg [1187], reason: Ring hung, action: reset
[ 361.003151] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[ 361.003155] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[ 361.003159] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[ 361.003163] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[ 361.003168] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 361.008378] drm/i915: Resetting chip after gpu hang
[ 361.008448] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -19
[drm:i9xx_check_fifo_underruns [i915]] *ERROR* pipe B underrun
[ 6238.095366] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[ 6238.178488] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[ 6478.955755] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[ 6479.106324] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[10826.977994] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[10829.110759] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[11516.335599] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[11516.402117] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[11516.501867] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[11516.565194] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[11516.801150] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[11518.994834] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[11526.743669] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[11526.943174] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[11529.385355] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[11537.401099] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[11537.433434] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[14042.976962] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[14044.995527] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[14114.372307] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
[14114.423848] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun
[15027.000095] [drm] stuck on render ring
[15027.003109] [drm] GPU HANG: ecode 2:0:0x4167ffc1, in Xorg [1188], reason: Ring hung, action: reset
[15027.003116] [drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.
[15027.003121] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel
[15027.003125] [drm] drm/i915 developers can then reassign to the right component if it's not a kernel issue.
[15027.003129] [drm] The gpu crash dump is required to analyze gpu hangs, so please always attach it.
[15027.003134] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[15027.008394] drm/i915: Resetting chip after gpu hang
[15027.008462] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -19
