309180 - Images do not render properly

Status: RESOLVED WORKSFORME

(Core :: Graphics: ImageLib, defect)

Description

[Andrew Henry]

I will attach screen shots of the pages how they render on my system.  Images
appear blocky and colors are off.  The same page loaded in IE has no rendering
issue's.  Clearing the cache and reloading sometimes resolves the issue,
sometimes not.  Images that do not render correctly may render wrong again and
look different in following visits to the page.  This issue is not related to a
single page for me.  

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.10) Gecko/20050716
Firefox/1.0.6

Comment 1

[Andrew Henry]

Attachment: Page rendered in Firefox, w/ mistakes

This is an example of the image problem described in the bug.  Both the image
on the left and right of this site do not load correctly.

Comment 2

[Andrew Henry]

Attachment: This is the same page in IE a minute later

This is the same page in IE a minute later; Note the image's on the left and
right render correctly.

Comment 3

[Ryan Flint [:rflint] (ping via IRC for reviews)]

This is WFM on all recent and past milestone releases as well as the latest
nightlies. Check any proxies or accelerators you may have installed and try the
precedures here: http://kb.mozillazine.org/Standard_diagnostic

If you need further support, please see the MozillaZine forums
(http://forums.mozillazine.org)

Comment 4

[Frank Wein [:mcsmurf]]

Just because you don't see it doesn't mean this bug does not exist. Such bugs
can be caused by many different things.
Reporter: Can you also try if this still occours with a current trunk build or
FF 1.5 Beta 1? What graphics card do you use?

Comment 5

[Andrew Henry]

(In reply to comment #4)
> Just because you don't see it doesn't mean this bug does not exist. Such bugs
> can be caused by many different things.
> Reporter: Can you also try if this still occours with a current trunk build or
> FF 1.5 Beta 1? What graphics card do you use?

I've spoken w/ Doug Turner about this bug and submited beacause he was stumped,
for what thats worth.  I'm currently running FF1.0.6, I ran FF1.5B1 for a few
days.  I'll try that again or a nightly build.  I'm running a Geforce 4MX 440. 
This is a new bug to me, I've been running FF for a long time w/ no issue so I'm
not sure what changed.  I'll post more soon

Comment 6

[Andrew Henry]

(In reply to comment #5)
> (In reply to comment #4)
> > Just because you don't see it doesn't mean this bug does not exist. Such bugs
> > can be caused by many different things.
> > Reporter: Can you also try if this still occours with a current trunk build or
> > FF 1.5 Beta 1? What graphics card do you use?
> 
> I've spoken w/ Doug Turner about this bug and submited beacause he was stumped,
> for what thats worth.  I'm currently running FF1.0.6, I ran FF1.5B1 for a few
> days.  I'll try that again or a nightly build.  I'm running a Geforce 4MX 440. 
> This is a new bug to me, I've been running FF for a long time w/ no issue so I'm
> not sure what changed.  I'll post more soon
> 
> 

I know, I'm replying to myself :-).  Same issue's occur w/ a reinstall of 1.0.6,
and a install of FF 1.5 B1.  I havne't gone as far as blowing away my profile as
I have alot of exenstions installed.  Suggustions?

Comment 7

[Ryan Flint [:rflint] (ping via IRC for reviews)]

Sorry for jumping the gun there on the WFM...

Anyway, you don't have to wipe your current profile to use a new one. Just start
Firefox with the profile switch (Start -> Run -> "C:\Program Files\Mozilla
Firefox\firefox.exe" -p) and create a new one. 

Comment 8

[Andrew Henry]

(In reply to comment #7)
> Sorry for jumping the gun there on the WFM...
> 
> Anyway, you don't have to wipe your current profile to use a new one. Just start
> Firefox with the profile switch (Start -> Run -> "C:\Program Files\Mozilla
> Firefox\firefox.exe" -p) and create a new one. 

Ok, using another profile seems to resolve the issue.  But I notice the same
page takes longer, it loads each image, one or so at a time while in my other
profile, most or all the images start to render at nearly the same time.  I
wonder whats wrong w/ my profile?  Should I try to fix it, or just look into a
partial backup and try a new profile.

Comment 9

[Andrew Henry]

I think it's resolved:  in about:config I had modified the lines a long time ago
network.http.max-connections
network.http.max-connections-per-server
network.http.max-persistent-connections-per-proxy
network.http.pipelining
network.http.pipelining.maxrequests

I had set these to some pretty ridiculous values.  It increased speeds by
opening more connections.  It seems that it started to render each image at
almost the same time.  I think this is why I had the issue.  I've set them back
to default and haven't had this happen again, but the page loads much slower. 
What numbers might be more reasonable to increase speed but not screw images
like that.  I think I know just enough to be dangerous, and not enough to avoid
silly issue's like this.  Thanks for all the help

Comment 10

[Ryan Flint [:rflint] (ping via IRC for reviews)]

Those optimizations should really be tailored to your computer and connection
speeds. The MozillaZine forums have tons of threads dedicated to doing just that.

-> WORKSFORME