Firefox address bar graphic glitch on KDE

[Marcus Aurelius]

When running Firefox (13.0.1, earlier versions behaved the same way) on KDE (Ubuntu 12.04 LTS + kubuntu-desktop 4.8.2 recently updated to 4.8.4) sometimes when the autocomplete list drops down from the address bar, it comes with some "blocks" missing. Hovering with the mouse or typing more letters forces a redraw that corrects the issue temporarily.

This only occurs on KDE, and it never occurs on Xfce or Unity with the same Firefox user profile. I noticed that disabling the "Fade" effect (from the "All effects" list in KDE's control panel) triggers this bug in many KDE menus (when Fade is on, everything is OK except for Firefox autocomplete).

Image showing the bug:
http://img404.imageshack.us/img404/6367/firef.png
(not from my machine, it comes from this report: https://bbs.archlinux.org/viewtopic.php?id=136752 )

Ask Ubuntu question:
http://askubuntu.com/questions/158654/bug-in-firefox-address-bar-autocomplete-running-on-kde

Bug on bugs.kde.org:
https://bugs.kde.org/show_bug.cgi?id=295769

Similar report:
http://www.nvnews.net/vbulletin/showthread.php?t=173375

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 13.0.1+build1-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: marcuscf 1731 F.... pulseaudio
BuildID: 20120615112143
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xe3220000 irq 43'
   Mixer name : 'IDT 92HD73E1X5'
   Components : 'HDA:111d7676,80865002,00100202'
   Controls : 42
   Simple ctrls : 22
Channel: release
Date: Sat Jul 7 13:40:26 2012
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IpRoute:
 default via 192.168.0.1 dev eth0 proto static
 169.254.0.0/16 dev eth0 scope link metric 1000
 192.168.0.0/24 dev eth0 proto kernel scope link src 192.168.0.102 metric 1
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MostRecentCrashID: bp-5a60049a-d123-42a4-a23c-680462120602
Profiles: Profile0 (Default) - LastVersion=13.0.1/20120615112143 (In use)
RelatedPackageVersions:
 kopete 4:4.8.4-0ubuntu0.1
 icedtea-6-plugin 1.2-2ubuntu1
 rhythmbox-mozilla 2.96-0ubuntu4
 totem-mozilla 3.0.1-0ubuntu21
RfKill:

RunningIncompatibleAddons: False
SourcePackage: firefox
SubmittedCrashIDs: bp-5a60049a-d123-42a4-a23c-680462120602
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:

dmi.bios.date: 02/25/2011
dmi.bios.vendor: Intel Corp.
dmi.bios.version: IDG4510H.86A.0135.2011.0225.1100
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DG45ID
dmi.board.vendor: Intel Corporation
dmi.board.version: AAE27729-310
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrIDG4510H.86A.0135.2011.0225.1100:bd02/25/2011:svn:pn:pvr:rvnIntelCorporation:rnDG45ID:rvrAAE27729-310:cvn:ct3:cvr:

[Marcus Aurelius (marcuscf)]

It seems I have found a solution. I disabled VSync in the “Desktop Effects” settings panel and have not seen the glitch again for a while (I just found this out, that's why I can't tell for sure).

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Paul White (paulw2u)]

Showing "RESOLVED FIXED" in KDE 2012-08-28
No comments for over six years
So marking "Fix Released" to close