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README: mention kmod, workaround for T410 (Fixes GH-58)

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Peter Wu
2013-05-28 19:40:57 +02:00
parent c665a74def
commit 2822d1630c
1 changed files with 8 additions and 2 deletions
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10
README.md
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@@ -104,8 +104,9 @@ same behavior as:
If not explictly set, the default behavior is not to change the power state of If not explictly set, the default behavior is not to change the power state of
the discrete video card which equals to `load_state=-1 unload_state=-1`. the discrete video card which equals to `load_state=-1 unload_state=-1`.
The Lenovo T410s laptop needs the module option `skip_optimus_dsm=1`, otherwise The Lenovo T410 and Lenovo T410s laptops need the module option
it will detect the wrong methods which result in the card not being disabled. `skip_optimus_dsm=1`, otherwise it will detect the wrong methods which result in
the card not being disabled.
### Disable card on boot ### Disable card on boot
@@ -116,6 +117,11 @@ get disabled on boot:
bbswitch load_state=0 bbswitch load_state=0
Users of `kmod` should create `/etc/modprobe.d/bbswitch.conf` containing
`options bbswitch load_state=0` to set the default options. To load the module,
systemd users should create `/etc/modules-load.d/bbswitch.conf` containing
`bbswitch`.
You have to update your initial ramdisk (initrd) for the changes propagate to You have to update your initial ramdisk (initrd) for the changes propagate to
the boot process. On Debian and Ubuntu, this can performed by running the boot process. On Debian and Ubuntu, this can performed by running
`update-initramfs -u` as root. `update-initramfs -u` as root.