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

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Lekensteyn committed May 28, 2013
1 parent c665a74 commit 2822d1630ca0395a9addafe84474f02b36f11807
Showing with 8 additions and 2 deletions.
  1. +8 −2 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
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
-it will detect the wrong methods which result in the card not being disabled.
+The Lenovo T410 and Lenovo T410s laptops need the module option
+`skip_optimus_dsm=1`, otherwise it will detect the wrong methods which result in
+the card not being disabled.
### Disable card on boot
@@ -116,6 +117,11 @@ get disabled on boot:
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
the boot process. On Debian and Ubuntu, this can performed by running
`update-initramfs -u` as root.

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