[ltp] T60p random hangs (ACPI?)

[Phil Shotton]

Richard Neill wrote:
> Dear All,
>
> Has anyone seen weird symptoms similar to the following:
>
> My T60p generally works fine, but after a few hours of use (usually 
> between 10-30 of uptime), it locks hard, requiring a power-off-reset.
>
> After the reset, I can get to grub just fine, but the system immediately
> hangs (black screen, no activity) at the instant that grub exits. 
> Memtest will run just fine though, as will Linux but ONLY if I add the 
> acpi=off parameter.
>
> Alternatively, allowing the system to "rest" (with or without AC 
> charging) for an hour will make it happy again, and it then boots OK.
>
> There doesn't seem to be anything I can do to end the sulk, other than 
> wait (pulling the battery doesn't help). The machine doesn't seem to 
> be significantly warm anywhere.
>
> I'm using the VESA driver, so it shouldn't be ATI-related.
>
> The cause of the lockups themselves is unknown - I can't find any 
> correlation, and often I'm doing nothing at all, or just trying to 
> move the mouse pointer. Running "nice yes > /dev/null" a few times (to 
> generate a hot CPU) doesn't trigger the bug.
>
> Any ideas would be welcome.
>
> Richard
I've been using a T60p for the best part of a year now with various 
Ubuntu distros. Never seen anything like this; the only crashes/hangs 
I've had have been related to display issues - usually after resume from 
suspend. Mine runs pretty continuously (with regular suspends); reboots 
are few and far between.

I know this doesn't help you any but it suggests you have a specific 
issue (probably hardware) rather than a generic t60p problem.

Cheers
Phil