Bug#614938: xserver-xorg-video-nouveau: delays in redraw with NVIDIA Quadro NVS 295

[Michel Dänzer <daenzer@debian.org>]

On Don, 2011-02-24 at 14:16 +0100, Vincent Lefevre wrote: 
> Additional information...
> 
> They was no such problem with the nv driver, and I hadn't used nouveau
> until now as it didn't work at all on this machine (bug 581830).
> 
> On 2011-02-24 13:00:33 +0100, Vincent Lefevre wrote:
> > I notice delays in redraw with xterm and emacs.
> > 
> > e.g. "emacs -q -l disptime.el" with disptime.el being:
> > 
> > (custom-set-variables
> >  '(display-time-24hr-format t)
> >  '(display-time-day-and-date nil)
> >  '(display-time-default-load-average nil)
> >  '(display-time-format "%T")
> >  '(display-time-interval 1)
> >  '(display-time-mail-file (quote none))
> >  '(display-time-mode t))
> > 
> > (grey rectangles when the time is updated).
> 
> The old digit(s) is replaced by a grey rectangle for a fraction
> of second, then the new digit(s) appears. If I constantly move
> the mouse pointer over the Emacs window (the contents, not the
> title bar of the window), this problem does not occur. This
> problem also depends on the font; try with "-fn 6x13".
> 
> In Xterm, the possible effects are:
>   * The prompt is slow to appear.
>   * When going backward or forward in the command history of my
>     shell, not all the pixel lines are redrawn at the same time
>     (this problem is difficult to reproduce).

Sounds like https://bugs.freedesktop.org/show_bug.cgi?id=33977 , which I
think should be fixed in a current nouveau X driver snapshot.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer