Messages in this thread |  | | Date | Fri, 1 Nov 2013 14:07:10 +0100 | From | Joerg Roedel <> | Subject | Re: VT-d and x2apic: broken resume after suspend to ram |
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Hi Peter,
On Fri, Nov 01, 2013 at 01:37:36PM +0100, Peter Senna Tschudin wrote: > I have one notebook that is failing to resume after suspend to ram. > I've filled a bug report back on the 2.6.41 days: > > https://bugzilla.redhat.com/show_bug.cgi?id=787299 > > The issue is that trying to resume after suspending to ram freezes the > computer. The resume starts well, but then it hangs. > > Yesterday I found that this may be related to VT-d / x2apic. If I > disable VT-d on the BIOS, suspend / resume works fine. If I enable > VT-d and pass nox2apic as boot parameter to Kernel suspend and resume > works fine. I would like some pointers to fix this issue. Can you help > me? > > Only when I have VT-d enabled, dmesg gives me additional output: > [ 0.023913] IOAPIC id 2 under DRHD base 0xfed91000 IOMMU 1 > [ 0.024080] Enabled IRQ remapping in x2apic mode > [ 0.024081] Enabling x2apic > [ 0.024082] Enabled x2apic > [ 0.024087] Switched APIC routing to cluster x2apic. > > The notebook is Toshiba R830-10p with i7-2620M.
Which kernels have you tried? Does it happen with all of them or is there a kernel-version where this started?
Joerg
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