Bug 791211

Summary: Firefox suddenly stopped displaying certain pages correctly
Product: Red Hat Enterprise Linux 6 Reporter: Radek Bíba <rbiba>
Component: firefoxAssignee: Martin Stransky <stransky>
Status: CLOSED NOTABUG QA Contact: Desktop QE <desktop-qa-list>
Severity: medium Docs Contact:
Priority: medium    
Version: 6.2CC: stransky, tpelka
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-02-20 09:21:53 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:

Description Radek Bíba 2012-02-16 14:09:59 UTC 
Description of problem:
I have no idea what happened, but suddenly the browser is unable to render some pages correctly. When I try to open such a page, almost no text is displayed correctly. No error dialog is displayed. The following error messages are printed to the console when I enter www.google.cz:

(firefox:8835): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Liberation Sans 17.3330078125', text=' '

(firefox:8835): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Liberation Sans Bold 17.3330078125', text='Vyhledávání'

(firefox:8835): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Liberation Sans Bold 21.3330078125', text=' &#268;eská republika'
...

I tried creating a new user profile, but that didn't help. I might also add that the problem originally occurred with a testing version of Firefox and the pango warnings weren't printed - instead, Firefox printed 'failed to create drawable'. When I downgraded to the latest public version in RHEL 6, the pango warnings started to occur.

Version-Release number of selected component (if applicable):
firefox-3.6.26-1.el6_2.i686

How reproducible:
Like I said, I don't know what triggered these problems. I haven't updated any rendering library, the X driver or the kernel recently. The hardware should be all right, though. Let me know if you need more information about the system.
Comment 1 Radek Bíba 2012-02-16 14:43:04 UTC 
Oh, interesting:

$ rpm -V liberation-sans-fonts
missing     /usr/share/fonts/liberation/LiberationSans-Bold.ttf (Input/output error)
missing     /usr/share/fonts/liberation/LiberationSans-BoldItalic.ttf (Input/output error)
missing     /usr/share/fonts/liberation/LiberationSans-Italic.ttf (Input/output error)
missing     /usr/share/fonts/liberation/LiberationSans-Regular.ttf (Input/output error)

I wonder if my laptop is about to die.
Comment 2 Martin Stransky 2012-02-16 14:45:42 UTC 
Die laptop, die!
Comment 3 Radek Bíba 2012-02-20 09:21:53 UTC 
e2fsck has healed the file system. I've reinstalled the font package, and Firefox is happy again.

Closing NOTABUG. Sorry about the false alarm. (Firefox could have helped me troubleshoot the problem better, though :)