On Sat, 2026-10-03 at 23:59 +0200, Bernhard Schmidt wrote: [...] > I still don't get why my bisection attempt failed so badly, > 6.12.111-stable (the one compiled from the kernel.org stable tree > following your bisection instructions) has been running for 36+ hours > before I voluntarily rebooted into your 6.12.112 kernel.
I believe this is because Debian's config sets a default mode for the
Intel IOMMU driver which is not present upstream.
When building from the upstream source, make sure you have
CONFIG_INTEL_IOMMU_DEFAULT_ON=y in the .config file, or add
"intel_iommu=on" to the kernel boot parameters.
Ben.
--
Ben Hutchings
The obvious mathematical breakthrough [to break modern encryption]
would be development of an easy way to factor large prime numbers.
- Bill Gates
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