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authorLeah Rowe <info@minifree.org>2018-10-16 03:53:18 +0000
committerGogs <gogitservice@gmail.com>2018-10-16 03:53:18 +0000
commit9869ecd445deacc331fc571f5012a920664eb8d2 (patch)
tree04ff3898b6d22f7f254a0acbff5233d71d97e93a
parentc108484915669af823bee9531416bdd579d9303a (diff)
parentabcefa10f36aa8f20f74b5adff182d26d3a33e05 (diff)
downloadlibrebootfr-9869ecd445deacc331fc571f5012a920664eb8d2.tar.gz
librebootfr-9869ecd445deacc331fc571f5012a920664eb8d2.zip
Merge branch 'power_management_beep_doc_update' of Grominet/libreboot into master
-rw-r--r--docs/misc/index.md24
1 files changed, 19 insertions, 5 deletions
diff --git a/docs/misc/index.md b/docs/misc/index.md
index 51c53c2c..3ab64bc9 100644
--- a/docs/misc/index.md
+++ b/docs/misc/index.md
@@ -210,18 +210,32 @@ battery goes to a critically low charge level, a beep occurs. Nvramtool
is included in libreboot, and can be used to enable or disable this
behaviour.
+You need to write changes in a libreboot rom image, and flash it, in order
+to apply them. You can either use a pre-compiled rom image, or create an image
+from the current one in your computer. See here
+<https://libreboot.org/docs/gnulinux/grub_cbfs.html#get-the-rom-image> for
+more information on how to do that.
+
+Once you have a libreboot rom image, say 'libreboot.rom', you can write
+changes on the image with the following commands.
+
Disable or enable beeps when removing/adding the charger:
- $ sudo ./nvramtool -w power\_management\_beeps=Enable
- $ sudo ./nvramtool -w power\_management\_beeps=Disable
+ $ sudo ./nvramtool -C libreboot.rom -w power\_management\_beeps=Enable
+ $ sudo ./nvramtool -C libreboot.rom -w power\_management\_beeps=Disable
Disable or enable beeps when battery is low:
- $ sudo ./nvramtool -w low\_battery\_beep=Enable
+ $ sudo ./nvramtool -C libreboot.rom -w low\_battery\_beep=Enable
+ $ sudo ./nvramtool -C libreboot.rom -w low\_battery\_beep=Disable
+
+You can check that the parameters are set in the image with :
- $ sudo ./nvramtool -w low\_battery\_beep=Disable
+ $ sudo ./nvramtool -C libreboot.rom -a
-A reboot is required, for these changes to take effect.
+Finally, you need to flash the rom with this new image. See here
+<https://libreboot.org/docs/gnulinux/grub_cbfs.html#with-re-flashing-the-rom>
+for a detailed explanation.
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