On Fri, Mar 17, 2017 at 8:15 AM, Daniel Drake <drake at endlessm.com> wrote: > Hi, > > On Mon, Mar 13, 2017 at 2:01 PM, Deucher, Alexander > <Alexander.Deucher at amd.com> wrote: >> > We are unable to boot Acer Aspire E5-553G (AMD FX-9800P RADEON R7) nor >> > Acer Aspire E5-523 with standard configurations because during boot >> > the screen is flooded with the following error message over and over: >> > >> > AMD-Vi: Completion-Wait loop timed out >> >> We ran into similar issues and bisected it to commit b1516a14657acf81a587e9a6e733a881625eee53. I'm not too familiar with the IOMMU hardware to know if this is an iommu or display driver issue yet. > > We can confirm that reverting this commit solves the issue. > > Given that that commit is an optimization, but it has introduced a > regression on multiple platforms, and has been like this for 8 months, > it would be common practice to now revert this patch upstream until > the regression is fixed. Could you please send a new patch to do this? > > Also, we would be happy to test any real solutions to this issue while > we still have the affected units in hand. No objections to a revert here. Alex > > Thanks > Daniel > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
