On Wed, May 25, 2011 at 05:33:59PM +0300, Alon Levy wrote: > On Wed, May 25, 2011 at 04:06:03PM +0200, Gerd Hoffmann wrote: > > On 05/25/11 15:53, Alon Levy wrote: > > >Without this windows xp guests set a 4 bits per pixel graphics mode. > > > > Hmm? Never seen this. Details please. > > When I start a windows xp guest with -vga qxl and no qxl driver installed I > get > a 16 color (4 bits) display mode, you notice it straight away because it's > just ugly. > > When I looked at the VBE calls the only difference between the calls done > with -vga qxl > and -vga std seemed to be the reported size (reported in 64K chunks, so for > qxl the val > is 0x400 by default, and for std vga it is 0x80). With this patch windows > sets the right > mode (32 bit color). > > Actually it seems this patch make the qxl driver refuse to load, I'm trying > to figure out > why (or if in fact it's this patch).
It is the patch. An alternative that works with and without qxl driver, and fixes the problem I reported, is to just change the VBE reported ram size to at most VGA_RAM_SIZE (== 8MiB). > > > > > cheers, > > Gerd > > >
