Black Screen on First Boot

[Dan Norton <dnorton@mindspring.com>]

Greetings,

The netinst of jessie from a flash drive, graphic install, went well 
like it did on another PC, but on this old PC the boot after install 
produced a black screen.

vbeinfo lists some display settings followed by "Preferred mode 
1360x768", but this mode is not in the list. There is an * beside 
1024x768x32 in the list. Is that the mode used during the install?

What is the "Preferred mode 1360x768" for? Is that for the kernel? I 
tried to change that by doing this:

grub> set root=(hd0,1)
grub> set gfxpayload=1024x768
grub> linux /boot/vmlinuz-3.16.0-4-686-pae root=/dev/sda1
grub> initrd /boot/initrd.img-3.16.0-4-686-pae
grub> boot

But that still resulted in a black screen. What should be done instead?

 - Dan