On Tue, 2004-01-06 at 10:03, Matt Palmer wrote: > On Tue, Jan 06, 2004 at 09:54:34AM +1100, Alan L Tyree wrote: > > I have a box with a video card that claims to have 32mb memory. Running > > at 1028x768, the best I can get is 8 colour depth. Is this about right? > > The maths on this is pretty simple - the number of bits you need to store your > image is with * height * bpp. Divide by 8 for bytes. > > So, 1024x768 = 786432 pixels, at 8bpp is < 1MB. Even at 32bpp, you're still > running at < 4MB. Something's rooted somewhere. Of course, modern video cards > use their memory for a lot more than storing the current image, but I've never > seen a card modern enough to have 32MB of video memory that can't push itself > to 1600x1200 or so. > > Either your card is lying, or you've got something squirrelly going on in your > X config. Does /var/log/XFree86.0.log tell you *why* it's not giving you any > sensible modes?
Thanks for this Matt & Peter. I'll have a look at the logs later today (it's my wife's machine). I'm running RH8 and it picked the vesa driver - I've tried a few others without success. Doing an lspci -vv on it gives: VGA Compatible Controller: SiS: unknown device 6325 Subsystem: MicroStar International: unknown device 5339. Anyway, I'll check the logs. Thanks again, Alan > > - Matt > -- > SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ > Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html > -- ------------------------------------------------------ Alan L Tyree http://www2.austlii.edu.au/~alan Tel: +61 2 4782 2670 Mobile: +61 405 084 990 Fax: +61 2 4782 7092 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
