343091 - images sometimes render checkered (from transparency) and then solid white

Status: RESOLVED INCOMPLETE

(Core :: Graphics, defect)

Description

[timeless]

This is a nightly build

uname -a
Linux swift 2.6.16-1-686-smp #2 SMP Tue Apr 25 20:45:37 UTC 2006 i686 GNU/Linux

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu (The Dapper Drake Release) Development Branch
Release:        6.06
Codename:       dapper

Minefield 3.0a1

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a1) Gecko/20060612 Minefield/3.0a1

about:buildconfig

Build platform
target
i686-pc-linux-gnu

Build tools
Compiler 	Version 	Compiler flags
gcc 	gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-52) 	-Wall -W -Wno-unused -Wpointer-arith -Wcast-align -Wno-long-long -pedantic -pthread -pipe
c++ 	gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-52) 	-fno-rtti -fno-exceptions -Wall -Wconversion -Wpointer-arith -Wcast-align -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wno-long-long -pedantic -fshort-wchar -pthread -pipe -I/usr/X11R6/include

Configure arguments
--enable-application=browser --enable-update-channel=nightly --enable-update-packaging --enable-optimize --disable-debug --disable-tests --enable-canvas --enable-svg --enable-pango --enable-default-toolkit=cairo-gtk2 --enable-static --disable-shared --enable-codesighs 

Using:
export MOZ_DISABLE_IMAGE_OPTIMIZE=1
the problem goes away.

Pavlov provided a sample image which didn't look properly and i sent him a picture of it. The env var above fixed both my real images and his.

Comment 1

[timeless]

Attachment: xdpyinfo output

Comment 2

[timeless]

http://toolkit.crispen.org/formats/png.html isn't a perfect example (in the real case, I can never get the image to render, and actually it seems to have the same problem for a file that claims to be a gif), but the image on the left doesn't render when i load or reload the page. if i view just the image, it still doesn't render. if i reload the viewed image, it does.

In a browser w/ the env var, things "just work".

Comment 3

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

Isn't this a very serious bug? But this is "normal".

Comment 4

[Vladimir Vukicevic [:vlad] [:vladv] (needinfo me, slow to respond)]

X server bug, if it goes away with disabling image optimization.  Ubuntu dapper is fairly old.

Comment 5

[Joe Drew (not getting mail)]

An X server bug that old is probably old news; please reopen if that's not the case.