602825 - ugly pixelated font rendering with fonts loaded with @font-face using rdesktop on Debian

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[Lionel Elie Mamane]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; fr; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10 (.NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.1; fr; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10 (.NET CLR 3.5.30729)

Fonts on this page are very pixelated. See screenshot. More general web pages, such as http://slashdot.org/ display OK.

Reproducible: Always

Steps to Reproduce:
1. Launch Firefox
2. If it does not already display this page, enter URL

Actual Results:  
The fonts are very pixelated

Expected Results:  
Nice smooth curves

Comment 1

[Lionel Elie Mamane]

Attachment: screenshot showing the problem

Comment 2

[(mostly gone) XtC4UaLL [:xtc4uall]]

Is your Issue reproduceable Extension-less in Safe-Mode and/or using a new Profile?
https://support.mozilla.com/en-US/kb/Safe+Mode
https://support.mozilla.com/en-US/kb/Managing+profiles#Creating_a_profile

Comment 3

[Lionel Elie Mamane]

(In reply to comment #2)
> Is your Issue reproduceable Extension-less in Safe-Mode and/or using a new
> Profile?

Yes, it is reproducible with a fresh profile in safe mode. With a new profile, I get shown the page 
http://www.mozilla.com/fr/firefox/3.6.10/firstrun/, which first displays with smooth curves letters, and then after less than one second the text is redrawn pixelated in a different font.

Comment 4

[(mostly gone) XtC4UaLL [:xtc4uall]]

Ok, seems @font-face related.
How about this site http://www.css3.info/preview/web-fonts-with-font-face/ ?

Comment 5

[Lionel Elie Mamane]

(In reply to comment #4)
> How about this site http://www.css3.info/preview/web-fonts-with-font-face/ ?

The text "Users of Safari 3.1 will see this text rendered with the Delicious font, with this part in Delicious Bold" is displayed pixelated and ugly. The rest of the page is OK.

Things that may be a bit "unusual" about the installation: the microsoft windows instance is a xen virtualisation guest. It is accessed over the remote desktop protocol. The microsoft windows instance under which mozilla firefox is running is thus the remote desktop _server_ and the remote desktop _client_ is http://www.rdesktop.org/ running over X11R7 (xorg) in a Debian GNU/Linux installation. A firefox running directly over X11 displays fine. The pixel mapping between what Windows gives screen size and the rdesktop window is 1:1, so there should be no quality "loss" there (as is shown by images and other fonts displaying nicely).

Comment 6

[(mostly gone) XtC4UaLL [:xtc4uall]]

(In reply to comment #5)
> (In reply to comment #4)
> > How about this site http://www.css3.info/preview/web-fonts-with-font-face/ ?
> 
> The text "Users of Safari 3.1 will see this text rendered with the Delicious
> font, with this part in Delicious Bold" is displayed pixelated and ugly. The
> rest of the page is OK.

Ok, this confirms that this is about loading (at least) .woff and .otf Fonts via @font-face.
Do other Browser what support @font-face and are accessed remotely do work on those kind of Sites?

Comment 7

[Lionel Elie Mamane]

(In reply to comment #6)

> Do other Browser what support @font-face and are accessed remotely do work on
> those kind of Sites?

Chromium 8.0.558.0 (62891) exhibits the same problem. Is there another browser you'd like me to test?

Comment 8

[(mostly gone) XtC4UaLL [:xtc4uall]]

Opera would be another Option.
But one Confirmation that this seems to be a Software/OS-Bug is sufficient.
Maybe you can - as further Crosscheck - test another Client-Software and/or OS for remote Access.
This is IMHO an INVALID Bug against Firefox/Gecko.

Comment 9

[Ale Mand]

Another test case http://www.libero-news.it/

Comment 10

[(mostly gone) XtC4UaLL [:xtc4uall]]

(In reply to comment #9)
> Another test case http://www.libero-news.it/

Ale, do you use any of the Setup mentioned in Comment 5?

Comment 11

[Ale Mand]

No, I'm not familiar with profiles, but since the behaviour is exactly as in Comment 3, I don't see any good reason for not thinking this is exactly the same problem.
IE properly renders the page, therefore I don't agree with Comment 8. This is browser related, an not OS related.

Comment 12

[(mostly gone) XtC4UaLL [:xtc4uall]]

(In reply to comment #11)
> No, I'm not familiar with profiles, but since the behaviour is exactly as in
> Comment 3, I don't see any good reason for not thinking this is exactly the
> same problem.

Same (similar) Symptoms can be caused by different Bugs under different Circumstances.

This Bug was explicitly filed against using Fx via a Remote Session.

Thus, please file a separate Bugreport after you searched for already filed ones matching your Setup beforehand.

Comment 13

[Ale Mand]

Thanks, but I already did search for, and this bug came up as the exact match, therefore I'm not filing any separate bug report.

Comment 14

[(mostly gone) XtC4UaLL [:xtc4uall]]

(In reply to comment #8)
Resolving INVALID.