On 10/27/08, Eric Anholt <eric@xxxxxxxxxx> wrote: > On Mon, 2008-10-27 at 14:27 +0000, Alan Jenkins wrote: >> What does this mean, should I do anything about it? Is tiling nice to >> have? >> >> It sounds like GEM broke something - though maybe it just added a more >> verbose error report. >> >> System: EeePC 701 >> Kernel: v2.6.28-rc1-5-g23cf24c >> Chipset: Intel mobile 915G-something >> Regretably necessary kernel boot option: noapic >> >> >> [ 1.438441] Linux agpgart interface v0.103 >> [ 1.438441] agpgart-intel 0000:00:00.0: Intel 915GM Chipset >> [ 1.438441] agpgart-intel 0000:00:00.0: detected 7932K stolen memory >> [ 1.443353] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ >> 0xd0000000 >> [ 1.443353] [drm] Initialized drm 1.1.0 20060810 >> [ 1.443353] pci 0000:00:02.0: PCI INT A -> Link[LNKA] -> GSI 5 >> (level, low) -> IRQ 5 >> [ 1.443353] pci 0000:00:02.0: setting latency timer to 64 >> [ 1.443353] [drm:i915_gem_detect_bit_6_swizzle] *ERROR* Couldn't read >> from MCHBAR. Disabling >> tiling. > > This means that something went wrong with our detection of the > CPU-versus-GPU tiling swizzling mode, and object tiling under GEM will > be disabled as a result. I should get access to an eee 7xx on Thursday > to see what's up with it -- it's supposed to be just a normal 915gm as > far as I know. Any news about this tiling error? It's already been reported as a bug in Ubuntu Jaunty, in the belief that it "reduces video performance" [1], and is also mentioned on a similar bug in Fedora [2]. [1] <https://bugzilla.redhat.com/show_bug.cgi?id=444328#c37> [2] <https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/329266> Thanks Alan -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
