Bug#817946: Installation of Debian 8.3 alongside another distro renders it unbootable
Hello. I just installed Debian 8.3 in a partition alongside Ubuntu 15.10
on a Lenovo X230 Tablet.
Everything goes okay, and it claims that it writing the boot record should
be safe and will preserve the Ubuntu 15.10 that it found.
However, upon rebooting, Ubuntu no longer boots. Its graphical booting
sequence just hangs on the little logo with dots moving along.
In the terminal 1 screen, the following errors are reported:
tpm_tis A TPM error (6) occurred atempting to read a pcr
drm: intel_set_pch_fifo_underrun_reporting: ERROR uncleared pch fifo
underrun on pch transcoder A
drm: intel_pch_fifo_underrun_irq_handler: PCH transcoder A FIFO underrun
It hangs there until I hard-reboot the machine.
The new Debian installation boots fine, but no matter what the details of
what is going on in Ubuntu, the installation of Debian next to another OS
should not have broken the other OS.