Twitter style looks wrong, fonts appear invisible
After upgrading Firefox to 11, it appears that fonts are 'invisible' when I go to Twitter.com (this is the only site so far where I notice this is happening). It appears only certain letters are showing, such as "N" and "l". This is not just on the home page, if I log in it continues across the site. I am on Windows 7 and have not made any major changes on my computer lately (no new programs, no new Firefox plugins).
Firefox 11: http://i.imgur.com/Pc2Bd.jpg Google Chrome: http://i.imgur.com/8i8j7.jpg
Solução escolhida
If you go into the Firefox button, then Options, then Advanced, then uncheck "Use Hardware Acceleration" and restart Firefox, does it make a difference?
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Try to start Firefox in Safe mode. This mode disables all extensions, user customizations, hardware acceleration, etc. temporarily for diagnostic and troubleshooting. If Firefox works find in Safe Mode, then this is likely an add-on issue. Restart Firefox in normal mode, then type "About:addons" (without the quotes) in the address bar. Disable your extensions one by one, restarting Firefox between each one, until you find the trouble maker. Once you do, you can disable that add-on and report the issue to that add-on's developer.
A few other basic trouble shooting things you can try is this: Run all Windows Updates, install all needed service packs, etc.
Update your graphics driver (Firefox uses your graphics card for some rendering, and an out of date graphics card driver can cause problems. https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers.
Update all your plugins (Flash, Java, etc.): http://www.mozilla.org/plugincheck/.
Download and Install MalwareBytes Anti-Malware, run a full Scan. http://www.malwarebytes.org/. This helps check that there are no viruses on your computer causing issues. You can uninstall this program after you clean off any infections.
If none of these help, read Websites look wrong, specifically the "Clearing the Cache" and "Reset the Page Style" sections.
You can do a font test to see if you can identify corrupted font(s).
You can try different default fonts.
- Tools > Options > Content : Fonts & Colors > Advanced
- [ ] "Allow pages to choose their own fonts, instead of my selections above"
You can use this extension to see which fonts are used for selected text.
Strangely, I'm still having this problem. When I use Safe Mode, the fonts on Twitter.com read properly. I tried disabling extensions/plugins/etc one by one. I got to the point where everything was disabled (in normal mode) and the font STILL reads incorrectly. When I go into advanced font options and uncheck "Allow pages to choose their own fonts, instead of my selections above" to rely on a custom selection, it of course shows properly, but I'd rather not force a font on every page I load when it's only Twitter giving me this issue.
No virus/malware, my computer is up-to-date... There's no strange page styles, or uncleared cache. I'm really stumped.
Solução escolhida
If you go into the Firefox button, then Options, then Advanced, then uncheck "Use Hardware Acceleration" and restart Firefox, does it make a difference?
Ah, eureka! Hardware Acceleration was the culprit, Tylerdowner. Will disabling this affect anything greatly? Thanks for your help.
It will slow down some web page rendering, but nothing very dramatic. Would you mind going into about:support (just type it into your address bar and press enter), and copy and paste the information from there into this thread? I'm try to find if this is a bug in firefox or not, as there are other users reporting the same thing.
Application Basics
Name
Firefox
Version
11.0
User Agent
Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20100101 Firefox/11.0
Profile Directory
Open Containing Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Memory Use
about:memory
Extensions
Name
Version
Enabled
ID
Adblock Plus
2.0.3
true
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
Greasemonkey
0.9.18
true
{e4a8a97b-f2ed-450b-b12d-ee082ba24781}
Web Developer
1.1.9
true
{c45c406e-ab73-11d8-be73-000a95be3b12}
Java Console
6.0.31
false
{CAFEEFAC-0016-0000-0031-ABCDEFFEDCBA}
Modified Preferences
Name
Value
accessibility.browsewithcaret
true
accessibility.typeaheadfind.flashBar
0
browser.places.importBookmarksHTML
false
browser.places.smartBookmarksVersion
2
browser.startup.homepage
http://google.com/
browser.startup.homepage_override.buildID
20120312181643
browser.startup.homepage_override.mstone
rv:11.0
extensions.lastAppVersion
11.0
gfx.blacklist.layers.opengl
5
gfx.blacklist.suggested-driver-version
8.15.10.2202
gfx.blacklist.webgl.opengl
5
gfx.direct2d.disabled
true
layers.acceleration.disabled
true
network.cookie.prefsMigrated
true
places.database.lastMaintenance
1334263005
places.history.expiration.transient_current_max_pages
52765
places.history.expiration.transient_optimal_database_size
84423146
places.last_vacuum
1315588340
privacy.donottrackheader.enabled
true
privacy.sanitize.migrateFx3Prefs
true
security.warn_viewing_mixed
false
Graphics
Adapter Description
Intel(R) G41 Express Chipset
Vendor ID
8086
Device ID
2e32
Adapter RAM
Unknown
Adapter Drivers
igdumdx32 igd10umd32
Driver Version
8.15.10.2302
Driver Date
2-11-2011
Direct2D Enabled
false
DirectWrite Enabled
false (6.1.7601.17776)
ClearType Parameters
Gamma: 2200 Pixel Structure: RGB
WebGL Renderer
Google Inc. -- ANGLE (Intel(R) G41 Express Chipset) -- OpenGL ES 2.0 (ANGLE 1.0.0.930)
GPU Accelerated Windows
0
Thanks for the info! We are looking into the issue, so hopefully if it is a bug it will be fixed in a near release :)