Slow xterm response

[Barton C Massey]

Does it happen when the laptop is plugged in?  If not, it
could be a power-management thing throttling your laptop
down.  In any case, try turning all your ACPI power management
stuff off and see if the problem persists.

Do you have some intense screen saver running, or does the
screen really "go blank"?  (Had to ask.)

Does it happen with a terminal other than xterm?  Don't know
what the answer would mean, but it would be useful
information, and in any case if the answer is no you've got
a workaround.

What chipset does your laptop have?

	Bart

In message <20071205170938.GA1006 at hank.org> you wrote:
> I've posted twice before without response, but it's very irritating to
> deal with on a daily basis.
> 
> Every day I plug my Gutsy laptop into the lan and hit power.
> 
> Then on my desktop I ssh into the laptop and start up a development
> web application.
> 
> As soon as the laptop's screen goes blank my xterm sessions show
> latency.  If I hold down a key and repeat a letter it goes along in
> fits and starts.
> 
> Now, I do not notice any latency in accessing the web application on
> the laptop, but I think that would be much harder to see.  So, I'm not
> sure if it's something related to just the xterm session or for all
> processes on the laptop.  There's no jump in cpu usage when this
> happens so I don't think it's related to some process looping.
> 
> I've got a script I use when it happens:
> 
> XAUTHORITY=/var/lib/gdm/:0.Xauth sudo /usr/bin/xset -q -display :0.0 dpms force off -q | grep Monitor
> 
> which gets rid of the latency.
> 
> If I run it *before* the latency starts, like I just did, the first
> run make the latency show up:
> 
> moseley at tiger:~/cat_svn$ XAUTHORITY=/var/lib/gdm/:0.Xauth sudo /usr/bin/xset -q -display :0.0 dpms force off -q | grep Monitor
> [sudo] password for moseley:
>   Monitor is On
>   Monitor is Off
> 
> <now latency>
> 
> 
> moseley at tiger:~/cat_svn$ XAUTHORITY=/var/lib/gdm/:0.Xauth sudo /usr/bin/xset -q -display :0.0 dpms force off -q | grep Monitor
>   Monitor is Off
>   Monitor is Off
> 
> <fixed>
> 
> 
> I suspect that's not much to go on, but if that was happing to you and
> driving you crazy what would you do to narrow down?
> 
> Weird.
> 
> 
> 
> X Window System Version 1.3.0
> Release Date: 19 April 2007
> X Protocol Version 11, Revision 0, Release 1.3
> Build Operating System: Linux Ubuntu (xorg-server 2:1.3.0.0.dfsg-12ubuntu8)
> Current Operating System: Linux tiger 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686
> Build Date: 29 September 2007
> 
> 
> 
> -- 
> Bill Moseley
> moseley at hank.org
> 
>