Sorry - should have indicated the graphics are Intel Mobile 4. Anyway, further testing and tried adding boot option xdriver=intel
and bingo - install graphics now ok!
Although installed Mint 14 Cinnamon to that machine, I'm still in a dilemma between 13 and 14 (or neither) given that I would like consistency across machines - Mint 13 Mate being favoured given lts.
Toshiba - Intel Mobile 4 Toshiba Realtek RTL8178B
Mint 13 - Installation graphics solved with xdriver=intel
Mint 14 - No problems (yet)!
Netbook - ATI X1200 Broadcom BMC4312
Mint 13 - Graphics - correct res and display mostly stable but (occassional slight glitch and fonts sometimes become unreadable after idle screen blanking. Logout and back in restores normality - 'til the next time).
Wifi drivers not installed. Install via wired connection but still no wifi. If it requires a restart then that's not possible using liveusb and do not wish to risk install to hdd unless know will work.
May be worth a go if wifi can be sorted).
Mint 14 - Correct res (1366x768) but desktop backgrounds corrupts yet icons, menu and new windows mostly ok (til background interferes). Yet.xdriver=ati or compatibility mode stable graphics but wrong res (1024x768). Mouse pointer disappears when stationary!
Wifi as Mint 13.
PC 1 - ATI 9550 TPLink Realtek RTL8185
Mint 13 - Graphics seem ok.
Wifi. My n/w is seen but refuses to connect (just repeated demand for password at 2min intervals and excruciating delays before dialogue becomes active).
Install dialogues launches filemanager and repeated "access denied" messages then ultimately bombing to text mode and probing. Eventually grinds to halt but alt+ctrl+bksp returns to login and desktop.
Mint14 - as Mint 13 (without the delays).
And there are still two machines to try!