notes:kernel_parameters
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Table of Contents
Information
- Kernel parameters that were useful at some point in time
Kernel Options
Microcode and Security Patches
- This disables all protection
spectre_v2=off nopti
Modern Standby
- Use
S0
to suspend and wake quickly on supported systems - On a Dell XPS 13 9360, this used to be required, but the default
deep
option also works
mem_sleep_default=s2idle
dyntick-idle Disable
- KGPE-D16's Coreboot installation notes mention needing this for better power saving
nohz=on
intel_iommu
intel_iommu=on
i915
- GuC firmware loading/submission requires PAVP to be enabled in BIOS
enable_guc
norenable_psr
work on a Lenovo T500 ThinkPad
i915.enable_psr=1
i915.enable_guc=3
radeon
radeon.deep_color=1
Backlight
- This prevents systemd from restoring previous backlight value on reboot
- This is necessary for Power Management
systemd.restore_state=0
DRM Debug
- This may make lower-end machines become very unresponsive; be prepared to have some safe way of rebooting
drm.debug=0xe
Custom Resolution
- This seems to only work on Wayland
- On Nightwane, using the refresh rate
59
in the below command works in Wayland, but not60
for p in /sys/class/drm/*/status; do con=${p%/status}; echo -n "${con#*/card?-}: "; cat $p; done
video=HDMI-A-1:3840x2160MR@59
/var/www/wiki/data/attic/notes/kernel_parameters.1566548590.txt.gz · Last modified: 2019/08/23 04:23 by Sean Rhone