It happened after I formatted (from ubuntu) the windows partition, using file system ntfs. Now only boots in emergency mode.

The log throws two errors: [drm:intel_set_pch_fifo_underrun_reporting [i915] ERROR uncleared pcf fifo underrun on pch transcoder A [drm:intel_pch_fifo_underrun_irq_handler [i915] ERROR PCH transcoder A FIFO underrun

It also say Timed out waiting for decide dev-disk-by.... .device I think it fails to mount the windows partition, but I wouldn't know how to do it myself. I found some suggestions around the internet but was unable to follow them.


Ok, I just resolved: first I commented out the windows mounting instruction for the boot /etc/fstab, then I was able to start the system normally.


You found the initial problem that was causing Ubuntu emergency mode. It was trying to mount a dirty Windows partition in fstab.

That happened because the NTFS file system was "dirty". It needs a chkdsk run on it from Windows, or, delete the NTFS partition from Ubuntu using gparted, and recreate the NTFS partition from a running Windows system.

Cheers, Al

  • Thank you! In alternative, I found it works also by having changed the wrong (old) uuid of windows in /etc/fstab to the new one given by blkid. – Daniele Gamba Jul 19 '16 at 8:14

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.