Re: Re: Slow response to keypresses in xorg-server-1.8.0-1

[Ryan Johnson <ryanjohn@ece.cmu.edu>]

On 8:59 PM, Ken Brown wrote:
> On 5/1/2010 9:49 AM, Ken Brown wrote:
>> I'm often seeing a very slow response to keypresses under
>> xorg-server-1.8.0-1.  The problem is intermittent, but it always happens
>> within a few minutes after starting the server (via the start menu
>> shortcut or a slight variant).  Here are some examples:
>>
>> 1. Switching windows with Alt-Tab sometimes takes up to 15 seconds or
>> doesn't work at all (i.e., I get tired of waiting to see if the focus is
>> ever going to switch).
>>
>> 2. When using 'less' to view a file in an xterm window, there is
>> sometimes a delayed response to 'space' or 'q'.
>>
>> 3. When viewing a directory in emacs-X11, pressing 'v' to start viewing
>> a file can sometimes result in a long delay, pressing 'space' to scroll
>> in view mode can be slow, and pressing 'q' to exit view mode can be 
>> slow.
>>
>> In some of these cases, I sometimes don't get a response to the first
>> keypress until I press a second key.  For example, if I'm viewing a file
>> with 'less', I may press 'q' and get no response.  Then pressing 'q' a
>> second time exits 'less' and also produces an echoed 'q' in xterm.
>> Similarly, I'll sometimes press a key, see no echo, and then get two
>> characters echoed at once after pressing a second key.
>>
>> Reverting to xorg-server-1.7.6-2 solves the problem.
>>
>> I'm attaching cygcheck output and an XWin log.
>
> I found a test case that I can reproduce reliably on my system.
>
> 1. With no .Xdefaults or .startxwinrc, start the X server via the 
> start menu shortcut.
>
> 2. Start xfig (with 'xfig &' in the xterm window).
>
> 3. Repeatedly press Alt-Tab to switch between the xterm and xfig 
> windows.  At some point the focus fails to switch.  When this happens, 
> press Alt and the focus switches.

Is there any progress on this? I'm also seeing these symptoms after 
upgrading to 1.8. Very annoying.

Thanks,
Ryan


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