Dmitry Torokhov wrote:
> On 4/13/07, Bjorn Helgaas <bjorn.helgaas@hp.com> wrote:
>
>
>> I'm a little concerned because Marco said that after a resume,
>> "cat /dev/ttyS0" caused his system to hang, and not even Ctrl-Alt-Del
>> worked.  Can we blame that all on X?
>>
>
> No, I don't think we can. The device connected to the port is simply
> not re-initialized and mey either transmit garbage or not transmit
> data at all. However accessing the port should not hang kernel.
>
>> Would stopping the X server before suspend and restarting
>> it after resume be a workaround?
>>
>
> I do not think it is feasible.  If you have to shut down X you might
> as well shut down entire box.
>
Hello everyone,

Thanks for looking into this.  It is still a problem which renders the 
pen unusable after a suspend.
I am happy to run any tests you need.
Attatched are a dmesg right after a reboot when the pen is working 
dmesg.wpen and another dmesg after I suspend the laptop and the pen no 
longer works.

Thanks again, let me know if I can be of help,

-- 
Marco