I'm trying to get Slitaz running on a very minimal setup. It's a Toshiba Portege 3010CT. 266MHZ MMX Pentium with 32MB of RAM.
I can get it working with Damned Small Linux using XFBDev - but not XVesa.
In Slitaz, Xvesa appears to be the only option and this doesn't work (all the colours are wrong and there are lines everywhere - sort of like when video memory blows up on a graphics card...).
I also have a Toshiba partege laptop, and can confirm that Xvesa is not supported. I'ma using Slitaz with Xorg for one year without problem. The simplest way to have Slitaz with Xorg is to download the latest "Cooking" or "RC" version: it uses Xorg by default.