Differences between version 8 and predecessor to the previous major change of ThinkpadNotes.
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| Newer page: | version 8 | Last edited on Monday, July 10, 2006 10:09:51 pm | by JohnMcPherson | Revert |
| Older page: | version 7 | Last edited on Thursday, June 22, 2006 6:25:28 pm | by JohnMcPherson | Revert |
@@ -41,12 +41,20 @@
! [IBM] Thinkpad Laptop External Microphone
Some (or all?) thinkpads (such as my Thinkpad 600) have non-standard microphone sockets. They expect an external microphone to either be powered, or to make contact with a metal ring surrounding the socket, which supplies +5V, and give it to the "tip" of the jack. This is discussed at [http://www.pc.ibm.com/qtechinfo/LWIK-3QZJKZ.html?up=unknownuser]. If you plug in a regular, un-powered microphone then nothing will happen.
+!!!Misc. Hardware Tips
! [IBM] Thinkpad Simple Boot
Thinkpads in the 600-770 series have a "simple boot" flag which is really a PNP OS=no flag. You should ''disable'' it for Linux 2.4, at least if you want the sound to work. Change the BIOS by pressing and holding F1 ''before'' you power up the machine, and hold it until the BIOS screen appears. The simple boot flag is under the Quick Boot icon. ''
-!!
!Flat [BIOS] battery
+!Not powering off anymore
+With Ubuntu Dapper's kernel, my old thinkpad 600 no longer powers down automatically when the machine is shut down. This is because these old laptops use APM, and not ACPI for power management. Create a file in <tt>/etc/modprobe.d</tt> (such as <tt>/etc/modprobe.d/power</tt>) and
+add the following:
+<verbatim>
+options apm power_off=1 realmode_power_off=1
+</verbatim>
+
+
!Flat [BIOS] battery
__Note__: these notes are for a Thinkpad 600. Other models might have completely different codes, case layout, and battery part number!
If you get error numbers on boot such as
00173
