use custom dsdt

collinm · November 8, 2012, 8:09pm

hi

i use suse 12.2, my dstp have some errors.
i fixed them.

how to load my custom dsdt?

thanks

malcolmlewis · November 8, 2012, 10:06pm

Hi
Have a read through this archive article;http://forums.opensuse.org/opensuseforums/archives/sf-archives/archives-tips-tricks-tweaks/320199-howto-fix-your-buggy-dsdt.html

collinm · November 8, 2012, 11:52pm

i already read this stuff.

in yast dsdt existe for system config but in bugzilla this way failed to work since a while.

i tried the grub2 way.

added my dsdt file to boot

added script below to /etc/grup/01_acpi

#! /bin/sh -e


# Uncomment to load custom ACPI table
GRUB_CUSTOM_ACPI="/boot/dsdt.aml"


# DON'T MODIFY ANYTHING BELOW THIS LINE!


prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib


. /usr/share/grub2/grub-mkconfig_lib
#. ${libdir}/grub/grub-mkconfig_lib


# Load custom ACPI table
if  x${GRUB_CUSTOM_ACPI} != x ] &&  -f ${GRUB_CUSTOM_ACPI} ] \
        && is_path_readable_by_grub ${GRUB_CUSTOM_ACPI}; then
    echo "Found custom ACPI table: ${GRUB_CUSTOM_ACPI}" >&2
    prepare_grub_to_access_device `${grub_probe} --target=device ${GRUB_CUSTOM_ACPI}` | sed -e "s/^/  /"
    cat << EOF
acpi (\$root)`make_system_path_relative_to_its_root ${GRUB_CUSTOM_ACPI}`
EOF
fi

after i runned this command:

grub2-mkconfig -o /boot/grub2/grub.cfg

after boot, i checked /var/log/message don’t find custom acpi text…

any idea?

malcolmlewis · November 9, 2012, 12:20am

Hi
Unfortunately no I’ve asked for some assistance from a user who is more up to speed on grub2.

please_try_again · November 9, 2012, 2:53am

I don’t know either. But if you added a script which name starts with ‘01’ in /etc/grub.d w and made it executable (Don’t forget that!), it should be sourced right after 00_header, and you should see its output written in /boot/grub2/grub.cfg. Check if you have a section:

### BEGIN /etc/grub.d/01_acpi ###
....
### END /etc/grub.d/01_acpi ###

in that file and what’s in there. If it does’t do what you want, try to edit this part, but don’t run

grub2-mkconfig -o /boot/grub2/grub.cfg

until you get it work, or your changes will be overwritten. I don’t know which commands you need to put there, sorry.

arvidjaar · November 9, 2012, 7:23am

Please show your generated grub.cfg

please_try_again · November 9, 2012, 11:55am

# Uncomment to load custom ACPI table
**GRUB_CUSTOM_ACPI="/boot/dsdt.aml"**


# DON'T MODIFY ANYTHING BELOW THIS LINE!


prefix=/usr
exec_prefix=${prefix}
libdir=${exec_prefix}/lib


. /usr/share/grub2/grub-mkconfig_lib
#. ${libdir}/grub/grub-mkconfig_lib


# Load custom ACPI table
if  x${GRUB_CUSTOM_ACPI} != x ] &&  -f ${GRUB_CUSTOM_ACPI} ] \
        && is_path_readable_by_grub ${GRUB_CUSTOM_ACPI}; then
    echo "Found custom ACPI table: ${GRUB_CUSTOM_ACPI}" >&2
    prepare_grub_to_access_device `${grub_probe} --target=device ${GRUB_CUSTOM_ACPI}` | sed -e "s/^/  /"
    cat << EOF
acpi (\$root)`make_system_path_relative_to_its_root ${GRUB_CUSTOM_ACPI}`
EOF
fi

If the file /boot/dsdt.aml doesn’t exist, your script will do nothing. See here on how to recompile the DSDT: https://wiki.archlinux.org/index.php/DSDT
You need to perform at least these steps:

# cd /tmp
# cat /sys/firmware/acpi/tables/DSDT > /tmp/dsdt.dat
# iasl -d dsdt.dat
# iasl -tc dsdt.dsl

Fix the errors (don’t know how). Then compile again and copy dsdt.aml:

# cp /tmp/dsdt.aml /boot/dsdt.aml

Once the file /boot/dsdt.aml exists, your script will write this to grub.cfg:

### BEGIN /etc/grub.d/01_acpi ###
  insmod part_msdos
  insmod ext2
  set root='hd0,msdos9'
  if  x$feature_platform_search_hint = xy ]; then
    search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos9 --hint-efi=hd0,msdos9 --hint-baremetal=ahci0,msdos9 --hint='hd0,msdos9'  aa192116-690d-4420-af5f-544d1e58b46c
  else
    search --no-floppy --fs-uuid --set=root aa192116-690d-4420-af5f-544d1e58b46c
  fi
acpi ($root)/boot/dsdt.aml
### END /etc/grub.d/01_acpi ###

I think one should move GRUB_CUSTOM_ACPI to /etc/default/grub.

arvidjaar · November 9, 2012, 5:09pm

Just use standard feature of openSUSE mkinitrd. Edit /etc/sysconfig/kernel and put path to your DSDT (binary) there:

# The file name of a binary ACPI Differentiated System Description Table
# (DSDT). This table is appended to the initial ram disk (initrd) that
# the mkinitrd script creates. If the kernel finds that its initrd
# contains a DSDT, this table replaces the DSDT of the bios. If the file
# specified in ACPI_DSDT is not found or ACPI_DSDT is empty/not specified,
# no DSDT will be appended to the initrd.
# Example path /etc/acpi/DSDT.aml
# You can also override Secondary System Description Tables (SSDTs).
# Add DSDT and SSDT files separated by spaces, e.g. "DSDT.aml SSDT1.aml"
# The files must be named DSDT.aml and/or SSDT[1-9]*.aml.
# For compatiblity reasons, if only one file is added it is assumed it is
# the DSDT and will be used as such, in future the above naming scheme
# will be enforce.
# Be aware that overriding these tables can harm your system.
# Only do this if you know what you are doing and file a bug on
# bugzilla.kernel.org so that the root cause of the issue will get fixed.
ACPI_DSDT=""

Do not forget to run mkinitrd after that.

please_try_again · November 9, 2012, 6:16pm

@collinm,

Either load the dsdt fom Grub (post #7) or include it in initrd (post #8). Don’t use both methods! The method suggested by @arvidjaar seems better and easier, and doesn’t rely on the boot loader.

collinm · November 9, 2012, 8:09pm

arvidjaar:

Just use standard feature of openSUSE mkinitrd. Edit /etc/sysconfig/kernel and put path to your DSDT (binary) there:

# The file name of a binary ACPI Differentiated System Description Table
# (DSDT). This table is appended to the initial ram disk (initrd) that
# the mkinitrd script creates. If the kernel finds that its initrd
# contains a DSDT, this table replaces the DSDT of the bios. If the file
# specified in ACPI_DSDT is not found or ACPI_DSDT is empty/not specified,
# no DSDT will be appended to the initrd.
# Example path /etc/acpi/DSDT.aml
# You can also override Secondary System Description Tables (SSDTs).
# Add DSDT and SSDT files separated by spaces, e.g. "DSDT.aml SSDT1.aml"
# The files must be named DSDT.aml and/or SSDT[1-9]*.aml.
# For compatiblity reasons, if only one file is added it is assumed it is
# the DSDT and will be used as such, in future the above naming scheme
# will be enforce.
# Be aware that overriding these tables can harm your system.
# Only do this if you know what you are doing and file a bug on
# bugzilla.kernel.org so that the root cause of the issue will get fixed.
ACPI_DSDT=""

Do not forget to run mkinitrd after that.

it’s the first thing i tried.
there is a bug report that work since a while…

collinm · November 9, 2012, 8:13pm

DO NOT EDIT THIS FILE

It is automatically generated by grub2-mkconfig using templates

from /etc/grub.d and settings from /etc/default/grub

BEGIN /etc/grub.d/00_header

if -s $prefix/grubenv ]; then
load_env
fi
set default="${saved_entry}"

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$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
font="/usr/share/grub2/unicode.pf2"
fi

if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=fr_FR
insmod gettext
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
insmod gfxmenu
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans-Bold14.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans10.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans12.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/ascii.pf2
insmod png
set theme=($root)/boot/grub2/themes/openSUSE/theme.txt
export theme
insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
insmod png
background_image -m stretch /boot/grub2/themes/openSUSE/background.png
if x${boot_once} = xtrue ]; then
set timeout=0
elif sleep --interruptible 0 ; then
set timeout=8
fi

END /etc/grub.d/00_header

BEGIN /etc/grub.d/01_acpi

insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
acpi ($root)/boot/dsdt.aml

END /etc/grub.d/01_acpi

BEGIN /etc/grub.d/10_linux

menuentry ‘openSUSE’ --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option ‘gnulinux-simple-7160ec60-bbf2-4c0c-ad03-7dfcadbc9455’ {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
echo ‘Loading Linux 3.6.6-1-desktop …’
linux /boot/vmlinuz-3.6.6-1-desktop root=UUID=7160ec60-bbf2-4c0c-ad03-7dfcadbc9455 splash=silent quiet showopts
echo ‘Loading initial ramdisk …’
initrd /boot/initrd-3.6.6-1-desktop
}
submenu ‘Advanced options for openSUSE’ $menuentry_id_option ‘gnulinux-advanced-7160ec60-bbf2-4c0c-ad03-7dfcadbc9455’ {
menuentry ‘openSUSE, with Linux 3.6.6-1-desktop’ --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option ‘gnulinux-3.6.6-1-desktop-advanced-7160ec60-bbf2-4c0c-ad03-7dfcadbc9455’ {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
echo ‘Loading Linux 3.6.6-1-desktop …’
linux /boot/vmlinuz-3.6.6-1-desktop root=UUID=7160ec60-bbf2-4c0c-ad03-7dfcadbc9455 splash=silent quiet showopts
echo ‘Loading initial ramdisk …’
initrd /boot/initrd-3.6.6-1-desktop
}
menuentry ‘openSUSE, with Linux 3.6.6-1-desktop (recovery mode)’ --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option ‘gnulinux-3.6.6-1-desktop-recovery-7160ec60-bbf2-4c0c-ad03-7dfcadbc9455’ {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
echo ‘Loading Linux 3.6.6-1-desktop …’
linux /boot/vmlinuz-3.6.6-1-desktop root=UUID=7160ec60-bbf2-4c0c-ad03-7dfcadbc9455 showopts apm=off noresume edd=off powersaved=off nohz=off highres=off processor.max_cstate=1 nomodeset x11failsafe
echo ‘Loading initial ramdisk …’
initrd /boot/initrd-3.6.6-1-desktop
}
menuentry ‘openSUSE, with Linux 3.4.11-2.16-desktop’ --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option ‘gnulinux-3.4.11-2.16-desktop-advanced-7160ec60-bbf2-4c0c-ad03-7dfcadbc9455’ {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
echo ‘Loading Linux 3.4.11-2.16-desktop …’
linux /boot/vmlinuz-3.4.11-2.16-desktop root=UUID=7160ec60-bbf2-4c0c-ad03-7dfcadbc9455 splash=silent quiet showopts
echo ‘Loading initial ramdisk …’
initrd /boot/initrd-3.4.11-2.16-desktop
}
menuentry ‘openSUSE, with Linux 3.4.11-2.16-desktop (recovery mode)’ --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option ‘gnulinux-3.4.11-2.16-desktop-recovery-7160ec60-bbf2-4c0c-ad03-7dfcadbc9455’ {
load_video
set gfxpayload=keep
insmod gzio
insmod part_msdos
insmod ext2
set root=‘hd0,msdos1’
if x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint=‘hd0,msdos1’ 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
else
search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
fi
echo ‘Loading Linux 3.4.11-2.16-desktop …’
linux /boot/vmlinuz-3.4.11-2.16-desktop root=UUID=7160ec60-bbf2-4c0c-ad03-7dfcadbc9455 showopts apm=off noresume edd=off powersaved=off nohz=off highres=off processor.max_cstate=1 nomodeset x11failsafe
echo ‘Loading initial ramdisk …’
initrd /boot/initrd-3.4.11-2.16-desktop
}
}

END /etc/grub.d/10_linux

BEGIN /etc/grub.d/20_linux_xen

END /etc/grub.d/20_linux_xen

BEGIN /etc/grub.d/20_ppc_terminfo

END /etc/grub.d/20_ppc_terminfo

BEGIN /etc/grub.d/30_os-prober

END /etc/grub.d/30_os-prober

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

BEGIN /etc/grub.d/90_persistent

END /etc/grub.d/90_persistent

please_try_again · November 9, 2012, 9:16pm

Waow! Here’s the interesting part though:

collinm:


### BEGIN /etc/grub.d/01_acpi ###
  insmod part_msdos
  insmod ext2
  set root='hd0,msdos1'
  if  x$feature_platform_search_hint = xy ]; then
    search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 --hint='hd0,msdos1'  7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
  else
    search --no-floppy --fs-uuid --set=root 7160ec60-bbf2-4c0c-ad03-7dfcadbc9455
  fi
**acpi ($root)/boot/dsdt.aml**
### END /etc/grub.d/01_acpi ###

collinm · December 3, 2012, 8:56am

any info how is supposing to work?

arvidjaar · December 4, 2012, 3:40am

This looks fine, assuming grub2 “acpi” command actually works. How do you check whether your DSDT is loaded?

after boot, i checked /var/log/message don’t find custom acpi text.

I do not understand it. Kernel will not see anything “custom”, magic is done before kernel is loaded. What do you expect to see there?

there is a bug report that work since a while…

Which is bug report number?