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Bug#884116: linux-image-4.9.0-4-amd64: screen atrifacts then crash

Cross-posted to 2 groups.

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On 16/12/17 19:03, Jerome wrote:
>     I have a similar issue, for me it occurred when upgrading from 
> kernel package 4.9.0-3 (stable) to 4.9.0-4.
> [...]
>     I tried a newer kernel, 4.13.0-0.bpo.1 from backports: it helped a 
> bit. Where 4.9.0-4 froze very quickly, sometimes right at the SDDM 
> login other times after less than a minute, 4.13 could last several 
> hours and some suspend/resume cycles. But it also had the same issue 
> eventually.
>
>     I enabled the IOMMU (intel_iommu=on), and it caught something. 
> There seem to be an access error before the freeze: [...]

Actually kernel 4.13 from backports is fine on my machine. The issues I 
saw were related to enabling the IOMMU. Without enabling the IOMMU, 4.13 
is fine after one week of use, and doesn't show the problems of 4.9.0-4.

I had enabled the IOMMU in the hope of containing the issue with 4.9.0-4 
instead of having my laptop locked solid, and it somehow worked. But 
this had other effects: with the IOMMU enabled, the stable version 
4.9.0-3 started to have GPU hang issues due to IOMMU errors. So I 
disabled it and retried 4.13, and it was stable. That's a fishy 
situation, but at least the system is usable.

So people experiencing this bug problem may want to try the backports 
4.13 kernel.

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Bug#884116: linux-image-4.9.0-4-amd64: screen atrifacts then crash root <sogerc1@gmail.com> - 2017-12-11 16:30 +0100
  Bug#884116: Further information "sogerc1 ." <sogerc1@gmail.com> - 2017-12-11 16:40 +0100
  Bug#884116: linux-image-4.9.0-4-amd64: screen atrifacts then crash Jerome <an.inbox@free.fr> - 2017-12-16 19:10 +0100
    Bug#884116: linux-image-4.9.0-4-amd64: screen atrifacts then crash Jerome <an.inbox@free.fr> - 2017-12-23 23:30 +0100
  Bug#884116: linux-image-4.9.0-4-amd64: Similar artefacts with the following crash when I try to play a movie audio channel throwgh HDMI. Warlock <internalmike@gmail.com> - 2017-12-19 08:40 +0100
  Bug#884116: linux-image-4.9.0-4-amd64: screen atrifacts then crash Sylvain <beuc@beuc.net> - 2018-01-10 20:50 +0100
  Bug#884116: linux-image-4.9.0-3-amd64: screen artifacts then crash without anyway to revert to console Mathias Bavay <mathias.bavay@gmail.com> - 2018-01-12 21:00 +0100

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