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update kernel parameter name in intel-igfx-troubleshooting.md

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bx 2021-03-22 13:18:42 -04:00
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docs/troubleshooting/intel-igfx-troubleshooting.md
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@ -8,12 +8,12 @@ You can confirm this is the issue by looking for a line similar to the following
[ 131.769] (EE) AIGLX: reverting to software rendering [ 131.769] (EE) AIGLX: reverting to software rendering
Newer versions of the Linux kernel have renamed the `i915.preliminary_hw_support=1` option to `i915.alpha_support=1`, so if you needed this kernel option in the past you will have to rename it or add it to your configuration files (follow either GRUB2 or EFI, not both): Newer versions of the Linux kernel have renamed the `i915.alpha_support=1` option (which was originally called `i915.preliminary_hw_support=1`) to `i915.force_probe=*`, so if you needed this kernel option in the past you will have to rename it or add it to your configuration files (follow either GRUB2 or EFI, not both):
* GRUB2: `/etc/default/grub`, `GRUB_CMDLINE_LINUX` line and * GRUB2: `/etc/default/grub`, `GRUB_CMDLINE_LINUX` line and
Rebuild grub config (`grub2-mkconfig -o /boot/grub2/grub.cfg`) Rebuild grub config (`grub2-mkconfig -o /boot/grub2/grub.cfg`)
* EFI: `/boot/efi/EFI/qubes/xen.cfg`, `kernel=` line(s) * EFI: `/boot/efi/EFI/qubes/xen.cfg`, `kernel=` line(s)
If you are unsure as to which parameter works with your kernel, check whether your kernel log from your latest boot has a message containing "i915: unknown parameter".
## IOMMU-related issues ## ## IOMMU-related issues ##