Re: Bisects that are neither good nor bad

[Pavel Machek <pavel@ucw.cz>]

Hi!

>  > > I think I've seen the same problem on one of my (similar spec) laptops.
>  > > Serial console was useless. On resume, there's a short spew of garbage
>  > > (just like if the baud rate were misconfigured) over serial before it
>  > > locks up completely.
>  > 
>  > <http://bugzilla.kernel.org/show_bug.cgi?id=4270> discusses a similar
>  > problem on a couple of machines.  In my resume script (for a TP 600X),
>  > I have to restore the serial console with
>  > 
>  >   setserial -a /dev/ttyS0
>  > 
>  > Until that magic executes, garbage characters (like modem noise)
>  > appear across the serial console.
> 
> With the resume failure I'm seeing, we don't get back to userspace
> to run anything like this. It goes bang long before that.
> 
> The SATA fix Mark proposed also didn't improve the situation for me :-/

If setserial -a is needed.. it means that someone really needs to fix
suspend/resume support for serial... do it on working machine to
enable debugging of broken ones...

(But x32 has no serials, so I'm unlikely to code it...)
-- 
Thanks for all the (sleeping) penguins.