I didn't have chance to try but I think the latest kernel fixes it:
$ rpm -q --changelog kernel-3.15.4-200.fc20|more
* Mon Jul 07 2014 Justin M. Forbes <jforbes@fedoraproject.org> 3.15.4-200
- Linux v3.15.4
- Fixes CVE-2014-4715 (rhbz 1115767 1116362)
- Fixes CVE-2014-4699 (rhbz 1115927 1116477)

* Tue Jul 01 2014 Justin M. Forbes <jforbes@fedoraproject.org> 3.15.3-200
- Linux v3.15.3
- drm/i915: Fix backlight regression caused by misconfigured VBT

* Tue Jul 01 2014 Hans de Goede <hdegoede@redhat.com>
- Add min/max quirk for the ThinkPad Edge E531 touchpad (rhbz#1114768)


Balint

On Fri, 2014-07-11 at 11:23 -0400, Oliver Ruebenacker wrote:


     Hello,


  On trying to boot, Fedora crashes on my Lenovo Thinkpad T430 with this message:


Booting 'Fedora (3.15.4-200.fc20.x86_64) 20 (Heisenbug)'


[   2.718947] [drm:cpt:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun


  Actually, all kernels after 3.13.10-200.fc20.x86_64 are crashing on boot on my laptop, but this is the first time I get an error message. Plus, I also have random crashes a few times per day.


  Any ideas? Thanks!


     Best,

     Oliver



--
Oliver Ruebenacker

Founder at Relomics Consulting

Be always grateful, but never satisfied.