Can load from cover DVD but not from iso

[Antcol]

Hi, I have an unusual problem in that I can install Linux from the DVD given away with Linux Format, but I cant install from an iso on an old Celeron D PC(The iso DVDs I'm using are OK as I have used them to install Linux on a different PC)

It seems the problem is with graphics and I have tried all the suggestions given in this and other forums to no avail, I always end up on a blank screen. Can anyone suggest a reason why the give away DVDs work but not the iso.

At present I am running Kubuntu (from a give away DVD, but I want to use Lubuntu. I can wait until a magazine gives it on the cover disk, but that might be a long while)

[dandnsmith]

I think you'd need to post a little more info;
- at what point in installation the blank screen occurs
- any screen messages prior to that
- what video hardware has the PC got

Sometimes it is a simple as forcing the install process to use a command line approach instead of the graphics installer, as there just isn't enough 'power' for the graphics installer (I used to get these on an older system)

[Antcol]

Hi Derek, thanks for your response. I dont know what my video hardware is, but its an old PC. The installation gets as far as loading the Linux distro, I get an on screen prompt with the name and version of the distro with dots showing it is progressing, then the screen goes blank and after a few seconds the same screen comes up but this time in monochrome, then the screen goes blank & no further activity. (I have tried using an alternate iso and this goes all the way through the install process but when I get to the reboot stage it goes straight to the black screen.)

UPDATE

I have found a way of resolving the issue. I installed Kubuntu from a magazine cover disk and then changed it to Lubuntu using the command "sudo apt-get install lubuntu-desktop"

I still cant understand why cover disks work but iso disks dont.