[SOLVED] Font glitches in Firefox

I'm using Firefox, infinality-bundle, xf86-video-ati for a Radeon HD 7770 card, and the i3 window manager.
I have an odd problem where some letters in a web page will be displayed as junk. The glitches are uncommon. It may be 1/10 pages I visit, and one character glitch per page. If I change focus from Firefox it will correct the glitches, which is why I can't post a screen capture.
I haven't tried to reproduce in Chromium yet.
Any ideas?
Last edited by mixer (2013-09-12 02:56:13)

Had the same problem and I solved it with creating a Xorg config file for the Radeon graphics card. The problem appears to be in the EXAPixmaps option, turning it off solved my problem. Paste the following text into a file named /etc/X11/xorg.conf.d/20-radeon.conf as root, using your favorite text editor:
Section "Device"
Identifier "Radeon"
Driver "radeon"
Option "AccelMethod" "EXA" #valid options are XAA, EXA and Glamor. EXA is the default.
Option "EnablePageFlip" "on" #supported on all R/RV/RS4xx and older hardware and set off by default
Option "EXAVSync" "on" #default is off, otherwise on. Only works if EXA activated
Option "EXAPixmaps" "off" #when on icreases 2D performance, but may also cause artifacts on some old cards. Only works if EXA activated
Option "ColorTiling" "on" #enabled by default on RV300 and later radeon cards.
Option "AccelDFS" "on" #default is off, read the radeon manpage for more information
Option "RenderAccel" "on" #enabled by default on all radeon hardware
EndSection
Afterwards, exit i3 and make sure you exit from the Xorg server and end up in the shell command line, then start i3 (startx). Or log out and log in using your display manager (lightdm etc.) The problem should be solved.

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[SOLVED] Font glitches in Firefox

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