graphics-drivers/intel: add IOMMU troubleshooting #265
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clarify the bug should be reported to upstream, we don't want to deal with them, else lgtm |
| drivers, as reported by the [kernel | ||
| documentation](https://www.kernel.org/doc/html/latest/x86/intel-iommu.html#graphics-problems). | ||
| To fix this, it is necessary to disable IOMMU for the integrated GPU. This can | ||
| be done by adding `intel_iommu=igfx_off` to your [kernel |
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I have only noticed this workaround for Intel Generation 5 (Broadwell).
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Mine (Skylake - don't remember the graphics gen) locks up, but hasn't done so again since I switched on guc firmware. It's hard to determine where the issues come from.
How many devices do you deal with? Do you think your experience is anecdotal or the expected one? The kernel docs didn't suggest any particular gen.
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Well, it is broken in the hardware for Broadwell, meaning you will have to enable this if you have 5th gen. For other versions, it could be firmware or something else, so I'm not sure.
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I left it as a generic option, but which is recommened for Broadwell. What do you think?
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Seems reasonable. Maybe mention that you need linux-firmware-intel, somewhere on this page.
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It's a dependency for the linux and linux-lts packages. Do you think it needs to be mentioned even so?
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Ended up adding it :p Thanks for the suggestion!
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@flexibeast can I merge this one? |
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@ericonr: LGTM - merged. |
@jnbr can you take a look at this explanation, please? Just want to make sure it's accurate.