On 2007.12.22 01:25:16 +0100, Harald Welte wrote: > > I'm running an Intel DQ35JO mainboard (Q35 chipset, Q6600 CPU) and I am > observing a regression with linux-2.6.24-rc1 through -rc6 (linux-2.6.git as > of today, ea67db4cdbbf7f4e74150e71da0984e25121f500). > > The last working version is 2.6.24-rc1. > > The system is running debian unstable (current) using > xserver-xorg-video-intel 2.2.0-1 > > So what is the actual problem: > It seems to be related to the way how the iommu/gart is used for memory > allocation of the framebuffer memory.
There's no behavior change in intel agp module between .24-rc1 to rc6. IOMMU shouldn't matter here, if you build x86_64 system and with CONFIG_DMAR on, you should be already having CONFIG_DMAR_GFX_WA for you. > > Xorg starts just as it should, but the lower part of the screen is > completely gobbled. I suppose the lower part of the screen is actually > showing off-screen memory at some completely differnt location. Do you have other changes except kernel? like other xorg packages, bios? > > Interestingly, the mouse cursor is superimposed on top of the garbage > (and it is not distorted). yeah, hardware cursor uses another plane than scan buffer, it's seperate. Could you fire a bug to https://bugs.freedesktop.org with versions and logs? Thanks. -- 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/
