Messages in this thread | | | Date | Tue, 3 Dec 2002 10:53:28 +0100 | From | Rogier Wolff <> | Subject | Re: Unsupported AGP-bridge on VIA VT8633 |
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On Thu, Nov 21, 2002 at 11:56:23PM +0100, Stian Jordet wrote: > tor, 2002-11-21 kl. 23:40 skrev Dave Jones: > > On Thu, Nov 21, 2002 at 11:20:31PM +0100, Stian Jordet wrote: > > > > > You were not really clear here. I tried it as a boot-time argument, because I > > > have agp-support compiled in. But I guess I could and should try it as a module. > > > > Yup. Then do a `modprobe agpgart agp_try_unsupported=1' > > > > > I'll do that now. But why do I have to use agp_try_unsupported=1? > > > > Because if it works, we can then add it to the ID table. > > It works, i think. I get this message when I load it: > > Linux agpgart interface v0.99 (c) Jeff Hartmann > agpgart: Maximum main memory to use for agp memory: 439M > agpgart: Trying generic Via routines for device id: 3091 > agpgart: AGP aperture is 64M @ 0xf8000000
Hi Dave, Stian,
"Same here": The module loads...
However, I have the impression that it doesn't work. I first noticed that my Xserver was taking 50% of my CPU while playing videos. This is much less on all other computers that I tried that on.
Turns out that "write bandwidth" to video memory is less than 40Mb per second. On another system with the same video card, but with a supported AGP bridge, I get almost 200Mbyte per second. I'll go and dig for "testgart" and see what that proves....
Roger.
-- ** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2600998 ** *-- BitWizard writes Linux device drivers for any device you may have! --* * The Worlds Ecosystem is a stable system. Stable systems may experience * * excursions from the stable situation. We are currently in such an * * excursion: The stable situation does not include humans. *************** - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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