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Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5

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Control: forwarded -1 https://lore.kernel.org/r/20200506144558.GA4019@taurus.defre.kleine-koenig.org

Hello,

On Tue, Apr 21, 2020 at 12:59:15PM +0000, Lennert Van Alboom wrote:
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Sunday, 19 April 2020 17:02, Lennert Van Alboom <lennert@vanalboom.org> wrote:
> > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> > On Sunday, 19 April 2020 15:56, Uwe Kleine-König uwe@kleine-koenig.org wrote:
> > > Do you have INTEL_IOMMU and INTEL_IOMMU_DEFAULT_ON included in your
> > > custom kernel? (If only the former: Do you suffer from the reported
> > > problem when you add intel_iommu=on to the kernel command line?)
> > 
> 
> > I started with the stock Debian 5.5-rc config, and just did make oldconfig from there on (don't like to stray too far from the official packages). So the option should be identical to the Debian kernels.
> > 
> 
> > $ grep INTEL_IOMMU Build/kernel/linux-5.7-rc1/.config
> > CONFIG_INTEL_IOMMU=y
> > CONFIG_INTEL_IOMMU_SVM=y
> > 
> 
> > CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
> > 
> 
> > =========================================
> > 
> 
> > CONFIG_INTEL_IOMMU_FLOPPY_WA=y
> > CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON=y
> > 
> 
> > I don't reboot often, but I'll very likely run into the i915 hang above again soon, so I'll try the intel_iommu=on then.
> 
> 
> Verified: my 5.7.0-rc1 system with intel_iommu=on can suspend/resume without issues.

I brought this problem to the attention of the x86 guys; see above URL
for the conversation.

Up to now no breaking insights.

@Lennert: Did you change your BIOS settings since the problem occured to
you? Lenny Szubowicz hinted it might be related to the TPM chip and
indeed switching it in the BIOS settings from 2.0 to 1.2 mode makes the
problem go away for me.

Best regards
Uwe

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Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Lennert Van Alboom <lennert@vanalboom.org> - 2020-01-16 08:50 +0100
  Processed: Re: Bug#949020: linux-image-5.5.0-rc5-amd64:  Poweroff/suspend doesn't work in 5.5.0-rc5 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2020-04-17 11:30 +0200
  Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Uwe Kleine-König <uwe@kleine-koenig.org> - 2020-04-17 11:30 +0200
    Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Uwe Kleine-König <uwe@kleine-koenig.org> - 2020-04-18 13:30 +0200
      Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Uwe Kleine-König <uwe@kleine-koenig.org> - 2020-04-18 15:30 +0200
        Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Uwe Kleine-König <uwe@kleine-koenig.org> - 2020-04-19 00:50 +0200
          Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Lennert Van Alboom <lennert@vanalboom.org> - 2020-04-19 01:40 +0200
            Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Uwe Kleine-König <uwe@kleine-koenig.org> - 2020-04-19 16:00 +0200
              Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Lennert Van Alboom <lennert@vanalboom.org> - 2020-04-19 17:20 +0200
                Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Lennert Van Alboom <lennert@vanalboom.org> - 2020-04-21 15:10 +0200
                Bug#949020: linux-image-5.5.0-rc5-amd64: Poweroff/suspend doesn't work in 5.5.0-rc5 Uwe Kleine-König <uwe@kleine-koenig.org> - 2020-05-11 22:30 +0200
  Processed: Re: Bug#949020: linux-image-5.5.0-rc5-amd64:  Poweroff/suspend doesn't work in 5.5.0-rc5 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2020-05-11 22:30 +0200
  Bug#949020: linux-image-5.6.0-2-amd64: Lenovo poweroff/suspend failure Bjørn Mork <bjorn@mork.no> - 2020-06-25 14:30 +0200

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