Comment 5 for bug 698099

On 1 April 2011 16:46, Lee Jones <email address hidden> wrote:
> Are you still having issues with this bug?
>
> Are you saying that all four ports did work and now they don't with the
> same kernel version? If so, it could be a HW issue rather than a kernel
> one, as there is almost certainly no problem with the driver it's using
> (Serial: 8250).

There seems to be some sort of hardware problem or race condition
because this problem only seems to happen when I turn the computer on
from cold, no matter which kernel version I use. If I do a warm reboot
then it almost never happens.

I've never known the problem to go away without a reboot once it has
manifested itself, nor for that matter to manifest itself without a
reboot if it hasn't at the start.

It's not causing me serious issues any more because I just check it
works when I first boot up and, if not, reboot again and 9 times out
of 10 it fixes it, but it's still a little annoying, and my curiosity
would like to get to the bottom of what's causing it!

--
Andy Buchanan
e-mail: <email address hidden>
tel.: 020 8651 1886
mob.: 07940 525 612