[Bug 18399] New: Bitmap-font glyph corruption in Gnome-terminal [ EXA enabled]

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=18399

           Summary: Bitmap-font glyph corruption in Gnome-terminal [EXA
                    enabled]
           Product: xorg
           Version: 7.4
          Platform: All
               URL: https://bugs.edge.launchpad.net/ubuntu/+source/xserver-
                    xorg-video-ati/+bug/291040
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: bryce at canonical.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=20091)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=20091)
Xorg.0.log

Forwarding this EXA bug from a Ubuntu tester:
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/291040

[Problem]
glyph corruption in GnomeTerminal when using (non-anti-aliased) bitmap fonts.

[Original Report]
I get consistent and frequent glyph-corruption if I use bitmap-fonts (which are
not anti-aliased) in Gnome-terminal. The corruption will almost always be
triggered by moving/navigating the cursor over glyphs (thus temporarily
inverting the colors). I have attached a screenshot which clearly shows the
problem when editing a file in GNU nano.

This corruption only occurs when running a composited desktop using Compiz.
I've not seen it happen under Metactiy (with EXA).

Xorg driver in use is xserver-xorg-video-radeon git20081003.f9826a56-0ubuntu2.
EXA-acceleration is enabled.
Using Compiz.
Ubuntu 8.10 (fully updated, installed from RC).
Graphics card: ATI X1400 mobile radeon (R500), 128MB RAM.

If more information is needed, please say so. I am also willing and able to
test new GIT-snapshots of the radeon driver, and provide feedback if problems
are fixed, etc.

[Screenshot of corruption]
http://launchpadlibrarian.net/19073107/bitmapfont-glyph-corruption.png

[lspci]
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon Mobility
X1400 [1002:7145]
        Subsystem: Lenovo Device [17aa:202a]
(Full lspci at http://launchpadlibrarian.net/19073109/lspci-vvnn.txt)


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