Comment 8 for bug 1464917

same problem here with toshiba satellite C55 and Xubuntu 15.04 It happens just after a BIOS update (from windowzzzz)
I had some issues in the past fater updating BIOS, it generaly fucked my GRUB and my dual-boot
may it be related to X server?
 <code>
[ 14193.953] (II) UnloadModule: "evdev"
[ 14193.964] (WW) xf86CloseConsole: KDSETMODE failed: Input/output error
[ 14193.964] (WW) xf86CloseConsole: VT_GETMODE failed: Input/output error
[ 14193.964] (EE)
Fatal server error:
[ 14193.964] (EE) xf86CloseConsole: VT_ACTIVATE failed: Input/output error
[ 14193.965] (EE)
[ 14193.965] (EE)
Please consult the The X.Org Foundation support
  at http://wiki.x.org
 for help.
[ 14193.965] (EE) Please also check the log file at "/var/log/Xorg.1.log" for additional information.
[ 14193.965] (EE)
[ 14193.965] (EE)
[ 14193.965] (EE) Backtrace:
[ 14193.965] (EE) 0: /usr/bin/X (xorg_backtrace+0x56) [0x7f7c27653556]
[ 14193.965] (EE) 1: /usr/bin/X (0x7f7c274a0000+0x1b7749) [0x7f7c27657749]
[ 14193.965] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f7c25166000+0x352f0) [0x7f7c2519b2f0]
[ 14193.965] (EE)
[ 14193.965] (EE) Segmentation fault at address 0x0
[ 14193.965] (EE)
FatalError re-entered, aborting
[ 14193.965] (EE) Caught signal 11 (Segmentation fault). Server aborting
[ 14193.965] (EE)
kcdtv@pr0fesoraBubbleVanAppletrudell:~$
</code>

libc.so.6 was installed no so long ago... could it be a problem with this library?