lkml.org 
[lkml]   [2013]   [Nov]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: VT-d and x2apic: broken resume after suspend to ram
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




\
 
 \ /
  Last update: 2013-11-01 14:21    [W:0.043 / U:3.672 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site