Text & images 'smear' sometimes

Bug #706100 reported by wizodd
12
This bug affects 2 people
Affects Status Importance Assigned to Milestone
chromium-browser (Ubuntu)
Won't Fix
Undecided
Unassigned
firefox (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

Binary package hint: firefox

 seems site independent, and it will smear in one tab w/o affecting others.

Pressing the "print" key fixes the display...at least until you scroll the page again.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: firefox 3.6.13+build3+nobinonly-0ubuntu0.10.10.1
ProcVersionSignature: Ubuntu 2.6.35-24.42-generic-pae 2.6.35.8
Uname: Linux 2.6.35-24-generic-pae i686
Architecture: i386
Date: Fri Jan 21 15:20:19 2011
FirefoxPackages:
 firefox 3.6.13+build3+nobinonly-0ubuntu0.10.10.1
 firefox-gnome-support 3.6.13+build3+nobinonly-0ubuntu0.10.10.1
 firefox-branding 3.6.13+build3+nobinonly-0ubuntu0.10.10.1
 abroswer N/A
 abrowser-branding N/A
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox

Revision history for this message
wizodd (wizodd-gmail) wrote :
Revision history for this message
Chris Wilson (notgary-deactivatedaccount) wrote :

Thanks a lot for reporting this. Can you please provide a screenshot that illustrates the issue you are experiencing?

Changed in firefox (Ubuntu):
status: New → Incomplete
Revision history for this message
wizodd (wizodd-gmail) wrote : Re: [Bug 706100] Re: Text & images 'smear' sometimes

I will try. I'll have to take a picture of the screen--using printscreen
clears the problem!

On 01/24/2011 07:36 PM, Chris Wilson wrote:
> Thanks a lot for reporting this. Can you please provide a screenshot
> that illustrates the issue you are experiencing?
>
> ** Changed in: firefox (Ubuntu)
> Status: New => Incomplete
>

Revision history for this message
Chris Wilson (notgary-deactivatedaccount) wrote :

There's a really good application in the Software Centre called Shutter for taking screen captures.

Revision history for this message
wizodd (wizodd-gmail) wrote :

I'll try it.
But the real problem is that I have to try and replicate it.

On 01/24/2011 08:39 PM, Chris Wilson wrote:
> There's a really good application in the Software Centre called Shutter
> for taking screen captures.
>

Revision history for this message
Chris Wilson (notgary-deactivatedaccount) wrote :

I think I know what it is you're talking about. I sometimes observe a
'smearing' effect of some pages in Chromium. If it happens to me, I'll take
a screenshot and let you take a look at it.

On 25 Jan 2011 03:45, "wizodd" <email address hidden> wrote:

I'll try it.
But the real problem is that I have to try and replicate it.

On 01/24/2011 08:39 PM, Chris Wilson wrote:
> There's a really good application in the Software Cen...

Revision history for this message
wizodd (wizodd-gmail) wrote :

Got it.

This may or may not be related to a similar effect which happens when
moving windows around, where the 'trail' of the moving window doesn't
get redrawn after the window moves on.

On 01/25/2011 04:05 AM, Chris Wilson wrote:
> I think I know what it is you're talking about. I sometimes observe a
> 'smearing' effect of some pages in Chromium. If it happens to me, I'll take
> a screenshot and let you take a look at it.
>
> On 25 Jan 2011 03:45, "wizodd"<email address hidden> wrote:
>
> I'll try it.
> But the real problem is that I have to try and replicate it.
>
>
> On 01/24/2011 08:39 PM, Chris Wilson wrote:
>> There's a really good application in the Software Cen...

Revision history for this message
Chris Wilson (notgary-deactivatedaccount) wrote :

This is the 'smear' I sometimes experience. Does it look familiar?

Revision history for this message
Chris Wilson (notgary-deactivatedaccount) wrote :
Revision history for this message
wizodd (wizodd-gmail) wrote :

Similar, though mine seems to be more even horizontally.

Does your's go awayif you scroll the smear off-screen and back?

Revision history for this message
Chris Wilson (notgary-deactivatedaccount) wrote :

Yeah, mine disappears when I scroll the affected area off the screen then back on. I'm not sure what the underlying problem is here. The only thing I can think of the Chromium and Firefox have in common is WebKit, and even then, Firefox only uses a part of it for it's Javascript rendering engine.

I'll confirm this for Firefox and forward it to Chromium and see if the devs at both ends can figure out what's going on.

Changed in firefox (Ubuntu):
status: Incomplete → Confirmed
Changed in chromium-browser (Ubuntu):
status: New → Confirmed
Revision history for this message
wizodd (wizodd-gmail) wrote :

If it is related to the other issue of dragged windows remaining on
screen, it may well be an OS issue having to do with screen
redrawing--that's something all 3 problems have in common--the os.

We should see if it exists on other OS versions of FF/Chromium.

On 02/03/2011 06:44 PM, Chris Wilson wrote:
> Yeah, mine disappears when I scroll the affected area off the screen
> then back on. I'm not sure what the underlying problem is here. The only
> thing I can think of the Chromium and Firefox have in common is WebKit,
> and even then, Firefox only uses a part of it for it's Javascript
> rendering engine.
>
> I'll confirm this for Firefox and forward it to Chromium and see if the
> devs at both ends can figure out what's going on.
>
> ** Changed in: firefox (Ubuntu)
> Status: Incomplete => Confirmed
>
> ** Also affects: chromium-browser (Ubuntu)
> Importance: Undecided
> Status: New
>
> ** Changed in: chromium-browser (Ubuntu)
> Status: New => Confirmed
>

Revision history for this message
Chris Coulson (chrisccoulson) wrote :

Firefox doesn't use anything at all from Webkit.

The screenshots look more like a video driver bug tbh

Revision history for this message
Chris Wilson (notgary-deactivatedaccount) wrote :
Revision history for this message
Chris Coulson (chrisccoulson) wrote :

Whether they've borrowed ideas from their Javascript engine is fairly irrelevant - Mozilla doesn't use Webkit, and in any case, what you're seeing is a rendering bug (ie, nothing to do with Javascript).

It's almost certainly a video driver bug.

Revision history for this message
wizodd (wizodd-gmail) wrote :
Download full text (3.5 KiB)

I agree.

Can you move this over to the video driver people?

On Thu, Feb 3, 2011 at 7:56 PM, Chris Coulson
<email address hidden>wrote:

> Whether they've borrowed ideas from their Javascript engine is fairly
> irrelevant - Mozilla doesn't use Webkit, and in any case, what you're
> seeing is a rendering bug (ie, nothing to do with Javascript).
>
> It's almost certainly a video driver bug.
>
> --
> You received this bug notification because you are a direct subscriber
> of the bug.
> https://bugs.launchpad.net/bugs/706100
>
> Title:
> Text & images 'smear' sometimes
>
> Status in “chromium-browser” package in Ubuntu:
> Confirmed
> Status in “firefox” package in Ubuntu:
> Confirmed
>
> Bug description:
> Binary package hint: firefox
>
> seems site independent, and it will smear in one tab w/o affecting
> others.
>
> Pressing the "print" key fixes the display...at least until you scroll
> the page again.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 10.10
> Package: firefox 3.6.13+build3+nobinonly-0ubuntu0.10.10.1
> ProcVersionSignature: Ubuntu 2.6.35-24.42-generic-pae 2.6.35.8
> Uname: Linux 2.6.35-24-generic-pae i686
> Architecture: i386
> Date: Fri Jan 21 15:20:19 2011
> FirefoxPackages:
> firefox 3.6.13+build3+nobinonly-0ubuntu0.10.10.1
> firefox-gnome-support 3.6.13+build3+nobinonly-0ubuntu0.10.10.1
> firefox-branding 3.6.13+build3+nobinonly-0ubuntu0.10.10.1
> abroswer N/A
> abrowser-branding N/A
> InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386
> (20101007)
> ProcEnviron:
> LANG=en_US.UTF-8
> SHELL=/bin/bash
> SourcePackage: firefox
>
> To unsubscribe from this bug, go to:
>
> https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/706100/+subscribe
>

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Revision history for this message
Olivier Tilloy (osomon) wrote :

Closing due to the last update to this bug being 6 years old. Please file a new bug if this still applies to recent releases of chromium-browser.

Changed in chromium-browser (Ubuntu):
status: Confirmed → Won't Fix
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