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I am following the wiki on how to add the kernel parameter pcie_aspm=off to GRUB. I have changed the following line in /etc/default/grub :
GRUB_CMDLINE_LINUX_DEFAULT="pcie_aspm=off loglevel=3 quiet"And then I ran grub-mkconfig -o /boot/grub/grub.cfg. But this doesn't work: when the system boots, it does not have the parameter passed to it. When I do "cat /proc/cmdline" it says:
root=UUID=12248684-7685-4f66-b58e-bb97b1512fb6 rw initrd=\initramfs-linux.imgHow do I add the parameter?
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Did you check the content of /boot/grub/grub.cfg ? Maybe it is write protected or you misspelled something.
On GRUB boot menu screen press e, then navigate to default menu entry, manually add pcie_aspm=off after kernel line parameters and press Ctrl+X (or F10). When the system is booted up check /proc/cmdline
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grub.cfg checks out. The parameters appear on every entry, I don't understand why they aren't getting applied. I'm not physically at the machine so I'll have to make an annoying trip there to test adding the boot menu option locally.
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_gpt
insmod ext2
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 12248684-7685-4f66-b58e-bb97b1512fb6
else
search --no-floppy --fs-uuid --set=root 12248684-7685-4f66-b58e-bb97b1512fb6
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_input console
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=5
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Arch Linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-12248684-7685-4f66-b58e-bb97b1512fb6' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod fat
set root='hd0,gpt1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 C212-388F
else
search --no-floppy --fs-uuid --set=root C212-388F
fi
echo 'Loading Linux linux ...'
linux /vmlinuz-linux root=UUID=12248684-7685-4f66-b58e-bb97b1512fb6 rw loglevel=3 quiet pcie_aspm=off
echo 'Loading initial ramdisk ...'
initrd /initramfs-linux.img
}
submenu 'Advanced options for Arch Linux' $menuentry_id_option 'gnulinux-advanced-12248684-7685-4f66-b58e-bb97b1512fb6' {
menuentry 'Arch Linux, with Linux linux' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-advanced-12248684-7685-4f66-b58e-bb97b1512fb6' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod fat
set root='hd0,gpt1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 C212-388F
else
search --no-floppy --fs-uuid --set=root C212-388F
fi
echo 'Loading Linux linux ...'
linux /vmlinuz-linux root=UUID=12248684-7685-4f66-b58e-bb97b1512fb6 rw loglevel=3 quiet pcie_aspm=off
echo 'Loading initial ramdisk ...'
initrd /initramfs-linux.img
}
menuentry 'Arch Linux, with Linux linux (fallback initramfs)' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-fallback-12248684-7685-4f66-b58e-bb97b1512fb6' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod fat
set root='hd0,gpt1'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1 C212-388F
else
search --no-floppy --fs-uuid --set=root C212-388F
fi
echo 'Loading Linux linux ...'
linux /vmlinuz-linux root=UUID=12248684-7685-4f66-b58e-bb97b1512fb6 rw loglevel=3 quiet pcie_aspm=off
echo 'Loading initial ramdisk ...'
initrd /initramfs-linux-fallback.img
}
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/30_uefi-firmware ###
menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
fwsetup
}
### END /etc/grub.d/30_uefi-firmware ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###Offline
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