Comment 32 for bug 275285

(In reply to comment #16)
> Created an attachment (id=19364) [details]
> Minimal test program to demonstrate bug
>
> Compile with: cc $(pkg-config --cflags --libs x11) -o fbc-bug-xlib
> fbc-bug-xlib.c
>
> Draws random-colored pixels with XPutImage to exercise a bug in the
> frame-buffer compression code in the xf86-video-intel 965 driver.
>
> When a driver has the bug, rendering from this program will appear
> to "freeze" every 15 seconds or so, (until the window is moved or
> its decorations are redrawn, etc.).
>

I can confirm this bug with/without this test program.