I think I may have misled you, or misunderstood what you are suggesting I try. Apologies.
When I boot from hard disk, the machine works perfectly in 1024x768 mode using that standard X.org and i810 driver in Hardy. So there doesn't seem to be a problem there.
The 800x600 issue is when I boot from the Hardy Live CD. Since this is not reconfigurable, I am not sure there is anything I can do to change this, and anyway I invariably boot from disk and that works fine.
The splash screen during booting is presumably not using X.org or its drivers so that must be a different problem.
I think I may have misled you, or misunderstood what you are suggesting I try. Apologies.
When I boot from hard disk, the machine works perfectly in 1024x768 mode using that standard X.org and i810 driver in Hardy. So there doesn't seem to be a problem there.
The 800x600 issue is when I boot from the Hardy Live CD. Since this is not reconfigurable, I am not sure there is anything I can do to change this, and anyway I invariably boot from disk and that works fine.
The splash screen during booting is presumably not using X.org or its drivers so that must be a different problem.