Bugzilla Bug 113123

After I upgrade to gtk+ 2.8.x, the fonts get corrupted in some applications.
Most notably in gvim and in gimp's menus.
I'm attaching a screenshot of gvim. The same corruption occurs in the menus and
in the gimp menus and dialogs.
It's also worth noting that by moving another window over the window clears up
the fonts, as does highlighting the menu items.
Downgrading to 2.6.x fixes the problem.

This issue has also been mentioned on usenet at
http://groups.google.ca/group/linux.gentoo.user/browse_thread/thread/15019e5acb611797/0cfaa53905598571


Reproducible: Always
Steps to Reproduce:
1. Launch gvim or gimp

Actual Results:  
Corrupted fonts

Expected Results:  
Clear fonts

Portage 2.0.53_rc7 (default-linux/amd64/2005.0, gcc-3.4.4, glibc-2.3.5-r3,
2.6.14 x86_64)
=================================================================
System uname: 2.6.14 x86_64 AMD Athlon(tm) 64 Processor 3200+
Gentoo Base System version 1.12.0_pre10
dev-lang/python:     2.3.5, 2.4.2
sys-apps/sandbox:    1.2.13
sys-devel/autoconf:  2.13, 2.59-r7
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1
sys-devel/binutils:  2.16.1
sys-devel/libtool:   1.5.20-r1
virtual/os-headers:  2.6.11-r3
ACCEPT_KEYWORDS="amd64 ~amd64"
AUTOCLEAN="yes"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -march=athlon64"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env
/usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3.5/env
/usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/kde/3/share/config
/usr/lib/X11/xkb /usr/lib64/mozilla/defaults/pref /usr/share/config
/var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/texmf/web2c /etc/env.d"
CXXFLAGS="-O2 -march=athlon64"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks sandbox sfperms strict"
GENTOO_MIRRORS="ftp://ftp.cs.mun.ca/pub/mirror/gentoo/
http://mirrors.tds.net/gentoo ftp://mirrors.tds.net/gentoo"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.ca.gentoo.org/gentoo-portage"
USE="amd64 X X509 aac alsa amd arts audiofile avi berkdb bitmap-fonts bzip2 cddb
cdparanoia cdr crypt cups curl dvd dvdr eds emboss emul-linux-x86 encode esd
exif expat fam ffmpeg flac foomaticdb fortran gcj gd gdbm gif gimp glut gmp
gnome gphoto2 gpm gstreamer gtk gtk2 guile idn imagemagick imlib innodb ipv6
java jpeg junit kde lcms ldap libwww lirc lm_sensors lzw lzw-tiff mad mikmod mng
mozcalendar mozilla mp3 mpeg musicbrainz mysql ncurses nls noxalan nptl
offensive ogg opengl pam pcre pda pdf pdfkit pdflib perl png python qt quicktime
rdesktop readline samba sdl spell ssl tcltk tcpd tetex tidy tiff timidity
transcode truetype truetype-fonts type1-fonts udev unicode usb userlocales
vorbis wxgtk1 xine xml xml2 xmms xpm xv xvid zlib userland_GNU kernel_linux
elibc_glibc"
Unset:  ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS

Created an attachment (id=73273) [details]
Screenshot

Hi, we are talking about GTK+ 2.8.7, right? If no, have also tried the last
version into the portage tree?

(In reply to comment #2)
> Hi, we are talking about GTK+ 2.8.7, right? If no, have also tried the last
> version into the portage tree?

I've seen it on both gtk+-2.8.6 and gtk+-2.8.7

What else are you running?  I only get this when I have a full-screen Xv app
(such as mplayer) running, and switch desktops.  And, even then, only on modular
X.  Do you have composite running (I do)?

When I exit the Xv app, the problem goes away entirely.

(In reply to comment #4)
> What else are you running?  I only get this when I have a full-screen Xv app
> (such as mplayer) running, and switch desktops.  And, even then, only on modular
> X.  Do you have composite running (I do)?
> 
> When I exit the Xv app, the problem goes away entirely.

I do have Composite enabled, but I'm not running any Xv apps. It might also be
worth mentioning that I'm running KDE, not GNOME.

I'm experiencing the same corruption, and so do many others: 
http://forums.gentoo.org/viewtopic-t-393284-highlight-gtk+fonts.html
http://forums.gentoo.org/viewtopic-t-393804-start-0-postdays-0-postorder-asc-highlight-.html

I'm running KDE and GTK+ 2.8.7, although I experienced the same problem with
GTK+ 2.8.6. 

Someone suggested disabling the XRENDER acceleration provided by the nVidia
binary drivers, but I'm actually using the nv drivers. 

Addendum: I am not using the Composite extension. X.org X11 6.8.2-r6.

I'm having the same problem as well, more annoying is that fact that firefox
1.5
requires gtk+ 2.8.7 when its emerged.

Is this only happening for ppl running gtk apps from with in kde?

Bug persists with GTK+ 2.8.8.

could those reporting this problem state the versions of their freetype, Xorg &
pango installs. Also mention if you have composite loaded in your xorg config
(isn't the same thing as using it).

Package versions:
media-libs/freetype: 2.1.10
x11-base/xorg-x11: 6.8.2-r6
x11-libs/pango: 1.10.1

X11:
- No composite extension loaded.
- Using the 'nv' driver.

Notes:
- revdep-rebuild and emerge --newuse have nothing to do; everything is up to date.
- CFLAGS: -O2 -march=athlon-xp -pipe.

Package versions:
[ebuild   R   ] media-libs/freetype-2.1.9-r1  -bindist -doc +zlib 0 kB
[ebuild   R   ] x11-base/xorg-x11-6.8.2-r6  -3dfx -3dnow +bitmap-fonts -cjk
-debug -dlloader -dmx -doc +font-server -insecure-drivers -ipv6 -minimal +mmx
+nls -nocxx +opengl +pam -sdk +sse -static +truetype-fonts +type1-fonts
(-uclibc) -xprint +xv 0 kB
[ebuild   R   ] x11-libs/pango-1.10.1  -debug -doc 0 kB

X11:
no composite enabled
Option      "RenderAccel" "True" <-- changing this to false fixes my problem,
but as i understand shouldn't have this effect
i'm using nvidia drivers

CFLAGS: "-march=pentium4 -Os -pipe -fomit-frame-pointer"

media-libs/freetype-2.1.9-r1  -bindist -doc +zlib
x11-libs/pango-1.10.1  -debug -doc
x11-base/xorg-x11-7.0.0_rc2-r1  -xprint

Composite enabled and in use
RenderAccel set to True

Using nvidia driver:
media-video/nvidia-kernel-1.0.7676-r1

No change with pango 1.10.2 and gtk+ 2.8.9 (using the 2.8.8 ebuild with a
changed version number).

Are you all on amd64?
All of you have a Nvidia video card?
All of you have Option   "RenderAccel" "True"?

(In reply to comment #15)
> Are you all on amd64?
> All of you have a Nvidia video card?
> All of you have Option   "RenderAccel" "True"?

I'm all of those things.

*** Bug 115341 has been marked as a duplicate of this bug. ***

I'm using IA32 and nvidia card with proprietary drivers. The problem does go
away when I set RenderAccel to false.

> Are you all on amd64?
No, Athlon XP -> IA-32.

> All of you have a Nvidia video card?
nVidia GeForce 6800 Ultra.

> All of you have Option   "RenderAccel" "True"?
No, since the open source "nv" driver does not recognize that option.

Same problem here with apps like Firefox and Azureus.

Xorg 6.8.2-r6
FreeType 2.1.10
Pango 1.10.2
nvidia-kernel 1.0.8174-r1

RenderAccel enabled
Composite disabled

This is on AMD Athlon 64 machine - 64 bit mode.

here is the upstream bug:
http://bugzilla.gnome.org/show_bug.cgi?id=313646

Not quite the same bug (as reported upstream) as I have antialiasing on in
firefox and it still does it.

> Are you all on amd64?
No - Pentium 4

> All of you have a Nvidia video card?
nvidia 6800GT

> All of you have Option   "RenderAccel" "True"?
I have it set to true - using lastest nvidia drivers (1.0.8174-r1)

The upstream bug has boiled down to broken binary nvidia drivers with
RenderAccel set to true, if I read it correctly.

Well if you look at the forum posts listed above then you'll see at least one
user who is running the nv driver and still has the problem.

Actually, I was mistaken - I do in fact use the nVidia binary driver with
RenderAccel enabled. Disabling it solves the problem.

To explain how I made this mistake: The GTK+ apps that exhibited the broken
font rendering are actually running on a remote machine, which I control from
afar using the terminal server technology NX (www.nomachine.com). Now, the X
server on that remote box does use the "nv" driver, however unlike VNC which
essentially transmits screen captures of the remote desktop, NX transmits X11
protocol primitives (as I know only now). The local client application is an X
server instance running in some kind of Xnest-like setup - and my local X
server uses the "nvidia" driver.

We've nailed the issue, then.

OK so the problem is related to :
*  NVidia card
*  NVidia driver (Sure with 1.0.7676-r1 and 1.0.8174-r1 versions)
*  Option "RenderAccel" "True"

*** Bug 114644 has been marked as a duplicate of this bug. ***

In this web forum thread, an nVidia engineer has responded to a description of
the problem: http://www.nvnews.net/vbulletin/showthread.php?t=61763

Full quote:

"There are currently known issues with RenderAccel. We hope to address most, if
not all of the known issues in the first driver release of 2006.

Thanks,
Lonni"

NVidia driver 1.0.8178 was released and are in the portage tree.
Here the bug #116400 for the bump, in the changelog there is this entry "Fixed
a corruption bug with RenderAccel and the Composite X extension
when using wide desktops." ...

Is this problem? please try with this newer version and see if this bug is
fixed.
If yes ... probably GTK+ 2.8 can be marked stable...is this a christmas present
;)?

Nope, still broken here with the new NVidia drivers.

Nope, bug persists.

We can't fix bugs with binary drivers. GTK upstream won't deal with it either.
Please contact nvidia for bugfixes.

Same problem here. Deactivating RenderAccel solved it.

This problem has disappeared for me after upgrading to the new nVidia driver
version 1.0-8756: http://www.nvidia.com/object/linux_display_ia32_1.0-8756.html

I'm not sure wheter this bug is really solved upstream. I've got the same
problems and I'm not using the binary drivers, removed them completely months
ago. I'm using nv on AMD64 no composite or other X extensions.
media-libs/freetype-2.1.10-r2
x11-base/xorg-x11-7.1
x11-libs/pango-1.12.3
x11-libs/gtk+-2.8.20-r1

If this is another kind of bug I'd like to know where to search for more
information. For firefox export MOZ_DISABLE_PANGO=1 is an usable workaround but
for other apps like Gimp it's really annoying.

For me: firefox (compiled) bad fonts at page area, firefox (bin) is like using
MOZ_DISABLE_PANGO=1. I'm using fglrx, I've tried with RenderAccel true and
false. I'm using x11-libs/gtk+-2.10.6, Thunderbird works fine, although firefox
2 is all messed up. I'm getting desperate!

(In reply to comment #35)
> I'm not sure wheter this bug is really solved upstream. I've got the same
> problems and I'm not using the binary drivers, removed them completely months
> ago. I'm using nv on AMD64 no composite or other X extensions.
> media-libs/freetype-2.1.10-r2
> x11-base/xorg-x11-7.1
> x11-libs/pango-1.12.3
> x11-libs/gtk+-2.8.20-r1
> 
> If this is another kind of bug I'd like to know where to search for more
> information. For firefox export MOZ_DISABLE_PANGO=1 is an usable workaround but
> for other apps like Gimp it's really annoying.
>