F23 problems on Thinkpad T60

[Timothy Murphy]

I installed Fedora-23/KDE on a Thinkpad T60 (32-bit)
from the appropriate Fedora/KDE spin.

After installation, the machine randomly stopped working.
On googling, I read a suggestion to disable the touchpad in the BIOS.
I did this, and find that it has made the system workable.

The laptop works fine under kernel 4.2.3-300.fc23.i686 ,
which is one of the two kernels offered.
However, it does not work under the default kernel 4.2.5-300.fc23.i686;
nothing appears on the screen after choosing the kernel,
and Ctrl-Alt-F2 does not open a text console.

Another Thinkpad, T510 (64-bit) works fine under Fedora-23/KDE
under the three kernels  4.2.{0,3,5}-300.fc23.x86_64 .