Is “update-initramfs -u†needed after adding or removing a module with “modprobe�
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Most instructions that I find online about adding or replacing kernel modules in Ubuntu only mention modprobe and rmmod. However, according my experience with e1000e, the modification is reverted after reboot unless I do update-initramfs -u afterwards. The man page of update-initramfs does not mention modules.
So, is it always necessary to run update-initramfs -u after replacing kernel modules if I want to have the modified kernel after reboot?
debian ubuntu kernel-modules
asked Feb 16 at 13:03
Alexey
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Most instructions that I find online about adding or replacing kernel modules in Ubuntu only mention modprobe and rmmod. However, according my experience with e1000e, the modification is reverted after reboot unless I do update-initramfs -u afterwards. The man page of update-initramfs does not mention modules.
So, is it always necessary to run update-initramfs -u after replacing kernel modules if I want to have the modified kernel after reboot?
debian ubuntu kernel-modules
asked Feb 16 at 13:03
Alexey
3811517
Using the /etc/modprobe.d directory is also an option.
– Raman Sailopal
Feb 16 at 13:44
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up vote
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down vote
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up vote
0
down vote
favorite
Most instructions that I find online about adding or replacing kernel modules in Ubuntu only mention modprobe and rmmod. However, according my experience with e1000e, the modification is reverted after reboot unless I do update-initramfs -u afterwards. The man page of update-initramfs does not mention modules.
So, is it always necessary to run update-initramfs -u after replacing kernel modules if I want to have the modified kernel after reboot?
debian ubuntu kernel-modules
asked Feb 16 at 13:03
Alexey
3811517
Most instructions that I find online about adding or replacing kernel modules in Ubuntu only mention modprobe and rmmod. However, according my experience with e1000e, the modification is reverted after reboot unless I do update-initramfs -u afterwards. The man page of update-initramfs does not mention modules.
So, is it always necessary to run update-initramfs -u after replacing kernel modules if I want to have the modified kernel after reboot?
debian ubuntu kernel-modules
asked Feb 16 at 13:03
Alexey
3811517
edited Feb 16 at 14:51
asked Feb 16 at 13:03
Alexey
3811517
asked Feb 16 at 13:03
Alexey
3811517
asked Feb 16 at 13:03
Alexey
3811517
3811517
Using the /etc/modprobe.d directory is also an option.
– Raman Sailopal
Feb 16 at 13:44
add a comment |Â
Using the /etc/modprobe.d directory is also an option.
– Raman Sailopal
Feb 16 at 13:44
Using the /etc/modprobe.d directory is also an option.
– Raman Sailopal
Feb 16 at 13:44
Using the /etc/modprobe.d directory is also an option.
– Raman Sailopal
Feb 16 at 13:44
add a comment |Â
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I guess this is about some Linux distribution that is part of the Debian/Ubuntu family, as update-initramfs is part of Debian initramfs-tools.
If the module (and the command to load it) is included in initramfs, then update-initramfs -u is needed: if you don't do it, initramfs will still contain the old state (= old version of the module and the command to load it).
If you are uncertain whether or not the module is included in initramfs, use the lsinitramfs command to view the contents of your initramfs. For example:
$ lsinitramfs /boot/initrd.img-4.9.0-5-amd64 |less
However, running update-initramfs -u should generally never hurt, so if you are uncertain, you can just run it to err on the safe side.
answered Feb 16 at 13:20
telcoM
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
I guess this is about some Linux distribution that is part of the Debian/Ubuntu family, as update-initramfs is part of Debian initramfs-tools.
If the module (and the command to load it) is included in initramfs, then update-initramfs -u is needed: if you don't do it, initramfs will still contain the old state (= old version of the module and the command to load it).
If you are uncertain whether or not the module is included in initramfs, use the lsinitramfs command to view the contents of your initramfs. For example:
$ lsinitramfs /boot/initrd.img-4.9.0-5-amd64 |less
However, running update-initramfs -u should generally never hurt, so if you are uncertain, you can just run it to err on the safe side.
answered Feb 16 at 13:20
telcoM
10.7k11132
add a comment |Â
up vote
1
down vote
I guess this is about some Linux distribution that is part of the Debian/Ubuntu family, as update-initramfs is part of Debian initramfs-tools.
If the module (and the command to load it) is included in initramfs, then update-initramfs -u is needed: if you don't do it, initramfs will still contain the old state (= old version of the module and the command to load it).
If you are uncertain whether or not the module is included in initramfs, use the lsinitramfs command to view the contents of your initramfs. For example:
$ lsinitramfs /boot/initrd.img-4.9.0-5-amd64 |less
However, running update-initramfs -u should generally never hurt, so if you are uncertain, you can just run it to err on the safe side.
answered Feb 16 at 13:20
telcoM
10.7k11132
add a comment |Â
up vote
1
down vote
up vote
1
down vote
I guess this is about some Linux distribution that is part of the Debian/Ubuntu family, as update-initramfs is part of Debian initramfs-tools.
If the module (and the command to load it) is included in initramfs, then update-initramfs -u is needed: if you don't do it, initramfs will still contain the old state (= old version of the module and the command to load it).
If you are uncertain whether or not the module is included in initramfs, use the lsinitramfs command to view the contents of your initramfs. For example:
$ lsinitramfs /boot/initrd.img-4.9.0-5-amd64 |less
However, running update-initramfs -u should generally never hurt, so if you are uncertain, you can just run it to err on the safe side.
answered Feb 16 at 13:20
telcoM
10.7k11132
I guess this is about some Linux distribution that is part of the Debian/Ubuntu family, as update-initramfs is part of Debian initramfs-tools.
If the module (and the command to load it) is included in initramfs, then update-initramfs -u is needed: if you don't do it, initramfs will still contain the old state (= old version of the module and the command to load it).
If you are uncertain whether or not the module is included in initramfs, use the lsinitramfs command to view the contents of your initramfs. For example:
$ lsinitramfs /boot/initrd.img-4.9.0-5-amd64 |less
However, running update-initramfs -u should generally never hurt, so if you are uncertain, you can just run it to err on the safe side.
answered Feb 16 at 13:20
telcoM
10.7k11132
answered Feb 16 at 13:20
telcoM
10.7k11132
answered Feb 16 at 13:20
telcoM
10.7k11132
answered Feb 16 at 13:20
telcoM
10.7k11132
10.7k11132
add a comment |Â
add a comment |Â
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Using the /etc/modprobe.d directory is also an option.
– Raman Sailopal
Feb 16 at 13:44