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Diffstat (limited to 'docs/misc/index.md')
| -rw-r--r-- | docs/misc/index.md | 58 |
1 files changed, 33 insertions, 25 deletions
diff --git a/docs/misc/index.md b/docs/misc/index.md index 05265091..dabe1e54 100644 --- a/docs/misc/index.md +++ b/docs/misc/index.md @@ -3,6 +3,7 @@ - [High Pitched Whining Noise on Idle (how to remove in Debian or Devuan)](#debian_powertop) + - [High Pitched Whining Noise on Idle (how to remove in Parabola)](#high_pitch_parabola) - [X60/T60: Serial port - how to use (for dock owners)](#serial) @@ -25,12 +26,12 @@ Start powertop automatically at boot time {#debian_powertop_autostart} ----------------------------------------- Included with libreboot is a script called 'powertop.debian'. Run this -as root and it will setup powertop to run with \--auto-tune at boot +as root and it will setup powertop to run with --auto-tune at boot time. Load the file in your text editor to see how it does that. -\$ **sudo ./resources/scripts/misc/powertop.debian** + $ sudo ./resources/scripts/misc/powertop.debian -Might want to run with \--calibrate first +Might want to run with --calibrate first If powertop doesn't work, another way (reduces battery life slightly) is to add *processor.max\_cstate=2* to the *linux* line in grub.cfg, @@ -50,18 +51,20 @@ most people can't hear or doesn't bother most people). This is not perfect! The full solution is still not discovered but this is a step towards that. Also, in some instances you will need to run -'sudo powertop \--auto-tune' again. This needs to be implemented +'sudo powertop --auto-tune' again. This needs to be implemented properly in coreboot itself! On the X60 with coreboot or libreboot, there is a high pitched sound when idle. So far we have use processor.max\_cstate=2 or idle=halt in GRUB. These consume power. Stop using them! -Be root\ -**\$ su -** +Be root + + $ su - -Installed powertop:\ -**\# pacman -S powertop** +Installed powertop: + + # pacman -S powertop and added the following to /etc/systemd/system/powertop.service : @@ -78,13 +81,14 @@ and added the following to /etc/systemd/system/powertop.service : [Install] WantedBy=multi-user.target -Finally, as root do that:\ -**\# systemctl enable powertop**\ -**\# systemctl start powertop** +Finally, as root do that: + + # systemctl enable powertop + # systemctl start powertop The next time you boot the system, the buzz will be gone. -Might want to run with \--calibrate first +Might want to run with --calibrate first If powertop doesn't work, another way (reduces battery life slightly) is to add *processor.max\_cstate=2* to the *linux* line in grub.cfg, @@ -107,8 +111,9 @@ included inside the ROM. Connect your null modem cable to the serial port on the dock and connect the other end to a 2nd system using your USB Serial adapter. -On the 2nd system, you can try this (using GNU Screen):\ -**\$ sudo screen /dev/ttyUSB0 115200** +On the 2nd system, you can try this (using GNU Screen): + + $ sudo screen /dev/ttyUSB0 115200 How to quit GNU Screen: Ctrl+A then release and press K, and then press Y. @@ -227,13 +232,14 @@ 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. -Disable or enable beeps when removing/adding the charger:\ -\$ **sudo ./nvramtool -w power\_management\_beeps=Enable**\ -\$ **sudo ./nvramtool -w power\_management\_beeps=Disable** +Disable or enable beeps when removing/adding the charger: + $ sudo ./nvramtool -w power\_management\_beeps=Enable + $ sudo ./nvramtool -w power\_management\_beeps=Disable + +Disable or enable beeps when battery is low: + $ sudo ./nvramtool -w low\_battery\_beep=Enable -Disable or enable beeps when battery is low:\ -\$ **sudo ./nvramtool -w low\_battery\_beep=Enable**\ -\$ **sudo ./nvramtool -w low\_battery\_beep=Disable** + $ sudo ./nvramtool -w low\_battery\_beep=Disable A reboot is required, for these changes to take effect. @@ -246,11 +252,13 @@ Get the panel name with **sudo get-edid | strings**\ Or look in **/sys/class/drm/card0-LVDS-1/edid** Alternatively you can use i2cdump. In Debian and Devuan, this is in the -package i2c-tools.\ -\$ **sudo modprobe i2c-dev**\ -\$ **sudo i2cdump -y 5 0x50** (you might have to change the value for --y)\ -\$ **sudo rmmod i2c-dev**\ +package i2c-tools. + + $ sudo modprobe i2c-dev + $ sudo i2cdump -y 5 0x50 (you might have to change the value for +-y) + + $ sudo rmmod i2c-dev You'll see the panel name in the output (from the EDID dump). If neither of these options work (or they are unavailable), physically |