1126241 - The fonts of Firefox are blurry on DELL AIO 9020

Status: RESOLVED INACTIVE

(Core :: Graphics: Text, defect, P4)

Description

[serge.thibault]

Attachment: Capture.PNG

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:35.0) Gecko/20100101 Firefox/35.0
Build ID: 20150108202552

Steps to reproduce:

when i surf on some pages, fonts are blurry, example in this link :
https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=24596


Actual results:

See the attach file, it's blurry

Comment 1

[serge.thibault]

Below the information on graphics acceleration

Date du pilote	1-29-2014
Description de la carte	Intel(R) HD Graphics 4400
Direct2D activé	true
DirectWrite activé	true (6.2.9200.16571)
Fenêtres avec accélération graphique	7/7 Direct3D 11 (OMTC)
GPU 2 actif	false
ID du périphérique	0x041e
ID du sous-système	05a71028
ID du vendeur	0x8086
Pilotes de la carte	igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32
RAM de la carte	Unknown
Rendu WebGL	Google Inc. -- ANGLE (Intel(R) HD Graphics 4400 Direct3D9Ex vs_3_0 ps_3_0)
Version du pilote	10.18.10.3412
windowLayerManagerRemote	true
AzureCanvasBackend	direct2d
AzureContentBackend	direct2d
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0

Comment 2

[Alice0775 White]

Could you paste "Graphics" section of about:support ?

Comment 3

[Jonathan Kew [:jfkthame]]

I'm guessing you have ClearType disabled on that system, and the downloadable font Intel is using does not render well without it. Does it look better if you enable ClearType via the Windows control panel?

Note that with default Firefox prefs we're supposed to use ClearType for downloadable fonts regardless of the system setting (see gfx.font_rendering.cleartype.use_for_downloadable_fonts, which should default to true). Which suggests that if you're seeing this result with default settings, there may be a bug in that option.

Hmm, looking at bug 504698 where that setting was introduced, it appears it may have been only for WinXP. But maybe we should be doing something similar on newer systems?

Comment 4

[Jonathan Kew [:jfkthame]]

(In reply to Alice0775 White from comment #2)
> Could you paste "Graphics" section of about:support ?

That's comment 1.

Comment 5

[Alice0775 White]

(In reply to Jonathan Kew (:jfkthame) from comment #4)
> (In reply to Alice0775 White from comment #2)
> > Could you paste "Graphics" section of about:support ?
> 
> That's comment 1.
Sorry, missed reloading

Comment 6

[serge.thibault]

"if you enable ClearType"
You have found the solution to the problem, it's great!
Thank you very much !

Comment 7

[BugBot [:suhaib / :marco/ :calixte]]

In the process of migrating remaining bugs to the new severity system, the severity for this bug cannot be automatically determined. Please retriage this bug using the new severity system.

Comment 8

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:lsalzman, could you have a look please?

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