Messages in this thread |  | | | Date | Thu, 19 Feb 2009 12:27:08 +0100 | | From | Ingo Molnar <> | | Subject | Re: i915 regression in 2.6.29-rc5 |
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* Zhang Rui <rui.zhang@intel.com> wrote:
> On Thu, 2009-02-19 at 03:33 +0800, Yinghai Lu wrote: > > On Tue, Feb 17, 2009 at 7:24 PM, ZhangRui <rui.zhang@intel.com> wrote: > > > Hi, all, > > > > > > I got an i915 failure in 2.6.29-rc5. > > > > > > problem description: the screen doesn't come back after suspend/resume. > > > A workaround is to boot with "nomodesetting". > > > > > > I got this error message during i915 driver load time, > > > [ 22.606749] mtrr: type mismatch for e0000000,10000000 old: write-back new: write-combining > > > [ 22.606752] [drm] MTRR allocation failed > > > [ 22.606753] . Graphics performance may suffer. > > > > CONFIG_MTRR_SANITIZER=y > > CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=1 > > CONFIG_MTRR_SANITIZER_SPARE_REG_NR_DEFAULT=1 > > > > may help this one. > > > hah, it helps. > the screen is back with this, while my previous kernel option is same > except that CONFIG_MTRR_SANITIZER_ENABLE_DEFAULT=0.
Ok, great. I think we should flip the default of MTRR_SANITIZER_ENABLE_DEFAULT from 0 to 1 in 2.6.30, as we now seem to a better job of sorting out MTRRs details than X does.
Yinghai, mind sending a patch for that?
Ingo -- 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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