Bug#606939: [squeeze -> 2.6.36 regression] holes in characters rendered on screen in X

[John Hughes <john@Calva.COM>]

On 26/01/12 00:05, Jonathan Nieder wrote:
> Hi,
>
> John Hughes wrote:
>
> > Since installing linux-image-2.6.36-trunk-686 in order to "fix" bug 590251
> > I'm seeing minor "glitches" in font rendering (seen in gnome-terminal and
> > iceweasel).
> >
> > The glitches take the form of holes in random characters.  Once a character
> > is displayed with a hole then the same character (same font, same size) will
> > always be displayed with the same hole.  For example as I type this bug
> > report the top of the uppercase "C" is missing.
> >
> > I don't know if this is a kernel or X bug.
> Sorry for the slow reply.  Can you reproduce this with a 3.x.y kernel?
> If so, can you take a screenshot so we can see what the corrupted
> glyphs look like?
Ok, will do this weekend - currently I'm on 3.3-rc something.  Problem 
still exists.

(Probably something to do with suspend/resume - It only seems to happen 
after at least one suspend/resume cycle).