[solved] iceweasel rendering partly corrupt

[wannek3]

Edit:
solved with an xorg.conf containing framebuffer (and empty line) as suggested by brummer. Thanks a lot!

Hi,

as described here
http://forum.siduction.org/index.php?topic=2149&highlight=iceweasel
(german) in April, i have the very same problem now, again:
some lines or words in web-pages are "pixeled" or shown as a block, unreadable. But it goes away, if i hover with the mouse, scroll or move the iceweasel-window over the edges of the screen.

I did already switch off hardware accelleration in iceweasel (and have the impression, it is less frequent since, now) and checked for libcairo2 (already newest):

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# dpkg -s libcairo2
Package: libcairo2
Architecture: amd64
Version: 1.12.2-2


Anybody else has seen this? Or maybe a solution?
Thanks!

[devil]

What version of Iceweasel is that?

greetz
devil

[wannek3]

Hi Devil,
thanks for taking care!
It is 10.0.7, apt claims, it's the newest.
Greets

Edit:
here is a link how it does look like
http://debianforum.de/forum/viewtopic.php?f=2&t=136313&hilit=Schrift+Fehler
I use (as before, nothing changed here) nouveau for a nvidia GF108 [Quadro 1000M]

[devil]

I faintly remember that. I run 17.0a2 (2012-09-21).
That and some inbetween are available at http://mozilla.debian.net. Pick your poison.

greetz
devil

[mylo]

Here no problems with:

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pol iceweasel
iceweasel:
 Installiert:           10.0.7esr-2
 Installationskandidat: 10.0.7esr-2
 Versionstabelle:


[wannek3]

Hi mylo,

thanks for having a look and sharing, but i had the very same version.


Hi devil,

thanks for the hint! So i tried the next, experimental:
# apt-cache policy iceweasel
iceweasel:
 Installiert:           15.0.1-1
 Installationskandidat: 15.0.1-1

But: same (bad) behaviour :-(


Additionally i realized, that the pixelized rendering also occurs in iceweasel's page header tabs, not only inside the web pages.

[brummer]

you can try this:
http://forum.siduction.org/index.php?topic=2623

[wannek3]

Hi brummer,

thanks, but it seems, shadowfb is already active (and glxgears fast).

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[    24.553] (II) Loading sub module "shadowfb"
[    24.553] (II) LoadModule: "shadowfb"
[    24.553] (II) Loading /usr/lib/xorg/modules/libshadowfb.so
[    24.554] (II) Module shadowfb: vendor="X.Org Foundation"
[    24.554]    compiled for 1.12.4, module version = 1.0.0
[    24.554]    ABI class: X.Org ANSI C Emulation, version 0.4

and no unload...

[brummer]

Well, that it is loaded doesn't mean that the shadow framebuffer is "on", look for this lines in your Xorg.0.log:

[    19.710] (**) NOUVEAU(0): Option "ShadowFB" "true"
[    19.710] (==) NOUVEAU(0): Using HW cursor
[    19.711] (**) NOUVEAU(0): Using "Shadow Framebuffer" - acceleration disabled
[

[reddark]

@wannek:
apt-cache policy iceweasel

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iceweasel:
 Installiert:           17.0~a2+20120928042009-1
 Installationskandidat: 17.0~a2+20120928042009-1
 Versionstabelle:
*** 17.0~a2+20120928042009-1 0
       500 http://mozilla.debian.net/ experimental/iceweasel-aurora amd64 Packages
       100 /var/lib/dpkg/status

v15 to old ...

[wannek3]

@brummer
no, i don't have any of your three lines...
(I don't even use a /etc/X11/xorg.conf)

@reddark
experimental still has 15.0.1-1. And since nothing changed sid->experimental, i don't believe in iceweasel's fault.

[brummer]

Well, the shadow framebuffer is off by default, so it's no wonder.

here is my etc/X11/xorg.conf.d/20-nouveau.conf

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Section "Device"
   Identifier "Device 0"
   Driver "nouveau"
   Option "ShadowFB"   "true"
   #Option "GLXVBlank"  "true"
EndSection


you can try it if you like,

[ghstryder]

I have the same problem that wannek3 has, for all practical intents and purposes. I usually use Chromium, so I haven't spent a lot of time looking for a solution. All the work wannek3 and others have put into this spurred me to look at it.

1 - I have the same software versions wannek3 has. I went to the version in experimental when it was suggested above with no change. I should add that I even see the problem in the address bar, it isn't limited to tabs or web pages.

2 - it has not always been this way. Since I do not use it regularly, I can't be sure of the exact time it happened.

3 - if I boot with a 64bit Desperado Reloaded iso, I see the identical problem.

4 - I grabbed an iso of Mint KDE 64bit and tried it - there is no problem in Mint, and there is no /etc/X11/xorg.conf.d/20-nouveau.conf by default.

[wannek3]

@brummer
thanks, but unfortunately your suggestion did not work. If Your lines are the only ones in my xorg.conf then x does not start at all:

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no screens found
And

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Xorg -configure dies with something like "number of created screens do not match".

By the way: as ghstryder told, i can see this on a brand new installation of Desperado Reloaded, too.

[michaa7]

just in case:

...
EndSection
# Leerzeile muss sein

and what's the name of your xorg.conf file (full path)