16.04 - Startup error Uncleared pch fifo underrun on pch transcoder - Ask Ubuntu

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• fsck error on boot: /dev/sda6: unexpected inconsistency; run fsck manually 3 answers

does 1 know how fix error? have dell note , second time error shows up.

[   1.761113]   [drm:intel_set_pch_fifo_underrun_reportintel_set_pch_fifo_underrun_reporting   [i915]  *error* uncleared pch fifo underrun on pch transcoder /dev/sda1 contains file system errors, check forced.  inodes part of corrupted orphan linked list found.   /dev/sda1: unexpected inconsistency; run fsck manually.       (i.e., without -a or options)  fsck exited status code 4  root filesystem on /dev/sda1 requires manual fsck   busybox vc. 22.1   (ubuntu 1:1.22.0-15ubuntu) built-in shell (ash) enter 'help' list of built -in commands. 

(initramfs) ((i wrote ))

built-in commands: ------------------------------- . : [alias break cd chdir command continue echo eval exec exit export false getopts hash history let local printf pwd read readonly return set shift test times trap true type ulimit umask unalias unset wait  [  [[ acpid ash awk basename blockdev cat chmod chroot chvt clear cmp cp cut deallocvt devmem df dnsdomainname du dumpkmap echo egrep env expr false fbset fdflush fgrep find fstrim grep gunzip gzip hostname hwclock ifconfing ip kill ln loadfront loadkmap ls lzop lzopcat mkdir mkfifo mknod mkswap mktemp modinfo more mount mv openvt pidof printf ps pwd readlink reset rm rmdir sed seq setkeycodes sh sleep sort stat static-sh stty switch-root sync tail tee test touch tr true tty umount uname uniq unlzop wc wget yes zcat  

you need run manual fsck (file system check). in file system isn't right.

1. boot computer
2. choose advanced options grub boot menu
3. choose recovery mode
4. choose root access
5. enter password
6. type sudo fsck -f /dev/sda1
7. run #6 more once if there errors
8. type reboot

if corrupted system won't let that, then:

1. boot ubuntu live dvd in "try ubuntu" mode
2. open terminal unity dash
3. in terminal, type sudo fsck -f /dev/sda1
4. run #3 more once if there errors