diff options
| author | Francis Rowe <info@gluglug.org.uk> | 2015-11-06 17:43:29 (EST) |
|---|---|---|
| committer | Francis Rowe <info@gluglug.org.uk> | 2015-11-06 23:45:09 (EST) |
| commit | 95259e28ef047923258434898113d70c8e544eab (patch) | |
| tree | 1c0501bf4c7df1c31948184dabfc1e7c4c215a6e /docs/misc/index.html | |
| parent | 707f9383a8189b0054730134340f20709f56f976 (diff) | |
| download | libreboot-95259e28ef047923258434898113d70c8e544eab.zip libreboot-95259e28ef047923258434898113d70c8e544eab.tar.gz libreboot-95259e28ef047923258434898113d70c8e544eab.tar.bz2 | |
convert documentation to texinfo
Diffstat (limited to 'docs/misc/index.html')
| -rw-r--r-- | docs/misc/index.html | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/docs/misc/index.html b/docs/misc/index.html deleted file mode 100644 index 5ff06a3..0000000 --- a/docs/misc/index.html +++ /dev/null @@ -1,254 +0,0 @@ -<!DOCTYPE html> -<html> -<head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - - <style type="text/css"> - @import url('../css/main.css'); - </style> - - <title>Miscellaneous</title> -</head> - -<body> - - <div class="section"> - <h1 id="pagetop">Miscellaneous</h1> - <p> - Or <a href="../index.html">Back to main index</a>. - </p> - <ul> - <li><a href="#trisquel7_powertop">High Pitched Whining Noise on Idle (how to remove in Trisquel 7)</a></li> - <li><a href="#high_pitch_parabola">High Pitched Whining Noise on Idle (how to remove in Parabola)</a></li> - <li><a href="#serial">X60/T60: Serial port - how to use (for dock owners)</a></li> - <li><a href="#powerbeeps">Power Management Beeps on Thinkpads</a></li> - <li><a href="patch.html">Using diff and patch</a></li> - <li><a href="#get_edid_panelname">Get EDID: Find out the name (model) of your LCD panel</a></li> - </ul> - </div> - - <div class="section"> - - <h1 id="trisquel7_powertop">High Pitched Whining Noise on Idle (how to remove in Trisquel 7)</h1> - - <div class="subsection"> - <h2 id="trisquel7_powertop_autostart">Start powertop automatically at boot time</h2> - - <p>Included with libreboot is a script called 'powertop.trisquel7'. Run this 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.</p> - - <p>$ <b>sudo ./resources/scripts/misc/powertop.trisquel7</b></p> - <p> - Might want to run with --calibrate first - </p> - <p> - If powertop doesn't work, another way (reduces battery life slightly) is - to add <i>processor.max_cstate=2</i> to the <i>linux</i> line in grub.cfg, - using <a href="../gnulinux/grub_cbfs.html">this guide</a>. - </p> - </div> - - <p><a href="#pagetop">Back to top of page</a></p> - - </div> - - <div class="section"> - - <h1 id="high_pitch_parabola">High Pitched Whining Noise on Idle (how to remove in Parabola)</h1> - - <p>The following removes most of the noise. It reduces what is a high frequency whine - (that not everyone can hear) to a slight buzz (which most people can't hear or doesn't bother most people).</p> - - <p>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 properly in coreboot itself!</p> - - <p>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! </p> - - <p>Be root<br/> - <b>$ su -</b></p> - - <p>Installed powertop:<br/> - <b># pacman -S powertop</b></p> - - <p>and added the following to /etc/systemd/system/powertop.service :</p> - -<pre><i> -[Unit] -Description=Powertop tunings - -[Service] -Type=oneshot -RemainAfterExit=no -ExecStart=/usr/bin/powertop --auto-tune -# "powertop --auto-tune" still needs a terminal for some reason. Possibly a bug? -Environment="TERM=xterm" - -[Install] -WantedBy=multi-user.target -</i></pre> - - - <p>Finally, as root do that:<br/> - <b># systemctl enable powertop</b><br/> - <b># systemctl start powertop</b></p> - - <p>The next time you boot the system, the buzz will be gone.</p> - - <p> - Might want to run with --calibrate first - </p> - <p> - If powertop doesn't work, another way (reduces battery life slightly) is - to add <i>processor.max_cstate=2</i> to the <i>linux</i> line in grub.cfg, - using <a href="../gnulinux/grub_cbfs.html">this guide</a>. - </p> - - <p><a href="#pagetop">Back to top of page</a></p> - - </div> - - <div class="section"> - - <h1 id="serial">X60/T60: Serial port - how to use (for dock owners)</h1> - <p> - For the Thinkpad X60 you can use the <b>"UltraBase X6"</b> dock (for the X60 Tablet it is called - X6 Tablet UltraBase). For the ThinkPad T60, - you can use the <b>"Advanced Mini Dock"</b>. - </p> - <p> - If you are using one of the ROM images with 'serial' in the name, then you have serial port enabled in libreboot - and you have memtest86+ 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. - </p> - <p> - On the 2nd system, you can try this (using GNU Screen):<br/> - <b>$ sudo screen /dev/ttyUSB0 115200</b> - </p> - <p> - How to quit GNU Screen: Ctrl+A then release and press K, and then press Y. - </p> - <p>There are also others like Minicom but I like GNU Screen</p> - <p> - By doing this before booting the X60/T60, you will see console output from libreboot. You will also see - GRUB displaying on the serial output, and you will be able to see MemTest86+ on the serial output aswell. - You can also configure your distro so that a terminal (TTY) is accessible from the serial console. - </p> - <p> - The following guide is for Ubuntu, and can be followed for Trisquel 6.0 which is based on Ubuntu 12.04 - (should also work in Trisquel 7, based on Ubuntu 14.04) to enable a serial console using GeTTY:<br/> - <a href="https://help.ubuntu.com/community/SerialConsoleHowto">https://help.ubuntu.com/community/SerialConsoleHowto</a> - </p> - <p> - Note: part of the tutorial above requires changing your grub.cfg. Just change the <b>linux</b> line to add instructions for enabling getty. - See <a href="../gnulinux/grub_cbfs.html">../gnulinux/grub_cbfs.html</a>. - </p> - <p><a href="#pagetop">Back to top of page</a> - - </div> - - <div class="section" id="powerbeeps"> - - <h1>Power Management Beeps on Thinkpads</h1> - - <p> - When disconnecting or connecting the charger, a beep occurs. - When the 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. - </p> - - <p> - Disable or enable beeps when removing/adding the charger:<br/> - $ <b>sudo ./nvramtool -w power_management_beeps=Enable</b><br/> - $ <b>sudo ./nvramtool -w power_management_beeps=Disable</b> - </p> - - <p> - Disable or enable beeps when battery is low:<br/> - $ <b>sudo ./nvramtool -w low_battery_beep=Enable</b><br/> - $ <b>sudo ./nvramtool -w low_battery_beep=Disable</b> - </p> - - <p> - A reboot is required, for these changes to take effect. - </p> - - </div> - - <div class="section"> - - <h1 id="get_edid_panelname">Get EDID: Find out the name (model) of your LCD panel</h1> - <p> - Get the panel name with <b>sudo get-edid | strings</b><br/> - Or look in <b>/sys/class/drm/card0-LVDS-1/edid</b> - </p> - <p> - Alternatively you can use i2cdump. In Trisquel, this is in the package i2c-tools.<br/> - $ <b>sudo modprobe i2c-dev</b><br/> - $ <b>sudo i2cdump -y 5 0x50</b> (you might have to change the value for -y)<br/> - $ <b>sudo rmmod i2c-dev</b><br/> - You'll see the panel name in the output (from the EDID dump). - </p> - <p> - If neither of these options work (or they are unavailable), physically removing the LCD panel is an option. - Usually, there will be information printed on the back. - </p> - - <p><a href="#pagetop">Back to top of page.</a></p> - - </div> - - <div class="section"> - - <p> - Copyright © 2014, 2015 Francis Rowe <info@gluglug.org.uk><br/> - Permission is granted to copy, distribute and/or modify this document - under the terms of the GNU Free Documentation License, Version 1.3 - or any later version published by the Free Software Foundation; - with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. - A copy of the license can be found at <a href="../gfdl-1.3.txt">../gfdl-1.3.txt</a> - </p> - - <p> - Updated versions of the license (when available) can be found at - <a href="https://www.gnu.org/licenses/licenses.html">https://www.gnu.org/licenses/licenses.html</a> - </p> - - <p> - UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE - EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS - AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF - ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS, - IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION, - WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR - PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS, - ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT - KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT - ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU. - </p> - <p> - TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE - TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION, - NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT, - INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES, - COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR - USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN - ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR - DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR - IN PART, THIS LIMITATION MAY NOT APPLY TO YOU. - </p> - <p> - The disclaimer of warranties and limitation of liability provided - above shall be interpreted in a manner that, to the extent - possible, most closely approximates an absolute disclaimer and - waiver of all liability. - </p> - - </div> - -</body> -</html> |