On Wed, Dec 2, 2015 at 6:15 AM, Emil Velikov <[email protected]> wrote: > On 30 November 2015 at 19:47, Alex Deucher <[email protected]> wrote: >> On Sat, Nov 28, 2015 at 4:01 PM, Pavel Machek <[email protected]> wrote: >>> >>> Thinkpad T40p needs agpmode 1. >>> >>> Signed-off-by: Pavel Machek <[email protected]> >> >> Seems odd that this wouldn't have been found earlier given how popular >> thinkpads are. Applied. Thanks, >> > Wondering if it wouldn't be better to apply these restrictions within > the AGP driver. I have a vague recollection that (at least?) some of > these are chipset limitations/bugs ?
I think it's probably better in the GPU drivers. AGP was always problematic. There are a number of quirks that were necessary for some users but not others on the same hardware. Additionally, the combination of vendors or even driver versions/behaviors were problematic. E.g., with UMS, the drivers didn't use much gart since there was just a single static allocation. Once we switched to KMS, lots of new bugs surfaced. Chipset A plus GPU vendor B worked fined, but chipset A with GPU vendor C was problematic. Alex -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
