Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: 2.6.29: can't resume from suspend with DMAR (intel iommu) enabled | Date | Tue, 24 Mar 2009 21:03:00 +0100 |
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Added some CCs.
On Tuesday 24 March 2009, Andrew Lutomirski wrote: > On vanilla 2.6.29 (on Ubuntu 8.10), on a Lenovo x200s, my system is > completely hosed on resume. It appears that even hard disk IO didn't > work (trying to do *anything* including getting a dmesg trace just > spewed sda io errors to the console). Hence no trace. I did an > alt-sysrq-b and the screen went blank and the machine just started > beeping at me. > > Resume works much better with intel_iommu=off. (I remember seeing a > patch go by that purported to fix resume with IOMMU enabled, but it > didn't work for me.) > > I'd be happy to try to make a better bug report if anyone has any bright ideas. > > --Andy
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