[ltp] UltraBay Slim removal

[wes schreiner]

Simon Williams wrote:
> wes schreiner wrote:
>> Peter F. Patel-Schneider wrote:
>>> In particular, is there an event that corresponds to moving the latch
>>> that lets the device eject lever pop out?  
>>
>> In every ThinkPad I've opened up there was no switch, no electrical 
>> connection at all, to the bay eject lever. Thus there is no way that 
>> anything except the user can know that the latch has been operated and 
>> the eject lever is out. Things may have changed in the newest 
>> ThinkPads, I have not opened any of them, but I would guess not. 
>> That's why the procedure under any operating system is: 1, you tell 
>> the system you want to remove the device in the bay; 2, the system 
>> prepares the device for removal and then turns off the LED beside the 
>> bay; then 3, you can pull on the lever and remove the device.
> 
> This is incorrect. I have a T23 and that knows when the eject lever is 
> out. In XP, pulling the lever causes it to automatically "safely remove" 
> the device.
> In Linux, this should generate an ACPI event, but doesn't seem to on 
> mine without the lt-hotswap kernel module.
> As an aside, having the lever out on my system causes the BIOS to 
> reverse the order it uses the batteries in.

Hmm, you are right, I stand corrected. My T30 knows when the lever is 
out. However I completely disassembled a G40 last week and it didn't 
have any connection to the lever latch. I don't think my old 600E can 
detect its latch either. Perhaps the lesser ThinkPads don't have this 
feature?

wes