[Bug 943003] [NEW] Top menu in Unity occasionaly doesn't show up when hovering a mouse over top panel.

[akukuq]

Public bug reported:

Top menu in Unity occasionaly doesn't show up when hovering a mouse over
the top panel. Normally it shows the focused window's title and top menu
when mouse is over it. In my case It showed window title ok, but when
hovering a mouse over it the title disappeared and nothing appeared
instead (besides close/minimize/maximize buttons).  This leaves user
without any way to set preferences or anything which is't available
through buttons of main window. Unfortunately i was not able to
reproduce this bug yet. Unmaximizing, switching desktop, closing and
opening firefox again didn't do the trick. The problem gone away after
logging out of unity session and logging again.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: firefox 10.0.2+build1-0ubuntu0.11.10.1
ProcVersionSignature: Ubuntu 3.0.0-16.28-generic 3.0.17
Uname: Linux 3.0.0-16-generic i686
NonfreeKernelModules: nvidia
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu4
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  adam       1630 F.... pulseaudio
 /dev/snd/controlC1:  adam       1630 F.... pulseaudio
 /dev/snd/pcmC1D0p:   adam       1630 F...m pulseaudio
BuildID: 20120216101208
CRDA: Error: [Errno 2] Nie ma takiego pliku ani katalogu
Card0.Amixer.info:
 Card hw:0 'NVidia'/'HDA NVidia at 0xcfff4000 irq 22'
   Mixer name	: 'Realtek ALC889A'
   Components	: 'HDA:10ec0885,10de0162,00100101'
   Controls      : 39
   Simple ctrls  : 22
Card1.Amixer.info:
 Card hw:1 'PAD'/'RME Digi96/8 PAD at 0xcb000000, irq 16'
   Mixer name	: ''
   Components	: ''
   Controls      : 10
   Simple ctrls  : 6
Channel: release
Date: Wed Feb 29 01:46:26 2012
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
IpRoute:
 default via 192.168.1.1 dev eth0  proto static 
 169.254.0.0/16 dev eth0  scope link  metric 1000 
 192.168.1.0/24 dev eth0  proto kernel  scope link  src 192.168.1.150  metric 1
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
PciNetwork:
 
ProcEnviron:
 PATH=(custom, no user)
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=10.0.2/20120216101208 (Running)
RfKill:
 
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/04/2008
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: NF66
dmi.board.vendor: EVGA
dmi.board.version: 2
dmi.chassis.type: 3
dmi.chassis.vendor: EVGA
dmi.chassis.version: NF66
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd09/04/2008:svnEVGA:pnNF66:pvr2:rvnEVGA:rnNF66:rvr2:cvnEVGA:ct3:cvrNF66:
dmi.product.name: NF66
dmi.product.version: 2
dmi.sys.vendor: EVGA

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 oneiric running-unity

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Title:
  Top menu in Unity occasionaly doesn't show up when hovering a mouse
  over top panel.

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