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Update user/troubleshooting/installation-troubleshooting.md

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Co-authored-by: Demi Marie Obenour <demiobenour@gmail.com>
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Alexander Heinrich 2022-05-06 18:52:58 +02:00 committed by GitHub
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@ -117,7 +117,7 @@ To confirm that a missing IOMMU is causing this problem, check for the following
2022-03-01 13:27:17.117+0000: libxl: libxl_create.c:1146:libxl__domain_config_setdefault: passthrough not supported on this platform
```
Here are the steps to fix this. Note that this reduces isolation, as described in the [FAQ here](/faq/#why-is-vt-damd-viamd-iommu-important):
Here are the steps to fix this. Note that this allows sys-net and sys-usb to take complete control of the system, as described in the [FAQ here](/faq/#why-is-vt-damd-viamd-iommu-important):
1. Change the virtualization mode of sys-net and sys-usb to "PV"
2. Add `qubes.enable_insecure_pv_passthrough` to `GRUB_CMDLINE_LINUX` in `/etc/default/grub`