Since the Xenial -> Yakkety beta upgrade, firefox resets its homepage to https://start.ubuntu-mate.org/ upon each start.
I use the default Unity 7 desktop, no Mate whatsoever. (I might have started up Mate once or twice for a very short period, way before even upgrading to Xenial.)
Happened both with firefox-49 package as shipped by Xenial, as well as firefox-48 that's currently in Yakkety beta (I purged and then reinstalled the package to get the one matching the distro, rather than the latest).
No startup wrapper script or something like that should mess with my preferred homepage, let alone set it to something that is about a different desktop than the one I'm using.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: firefox 48.0+build2-0ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-16.17-generic 4.8.0-rc7
Uname: Linux 4.8.0-16-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.3-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: egmont 2339 F.... pulseaudio
BuildID: 20160728202151
Channel: Unavailable
CurrentDesktop: Unity
Date: Sun Sep 25 21:34:07 2016
ForcedLayersAccel: False
IfupdownConfig:
auto lo
iface lo inet loopback
InstallationDate: Installed on 2012-05-30 (1579 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IpRoute:
default via 192.168.0.1 dev wlan0 proto static metric 600
169.254.0.0/16 dev wlan0 scope link metric 1000
192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.11 metric 600
MostRecentCrashID: bp-02582fc4-8633-4d4a-86cb-814af2140429
PrefSources:
/usr/lib/firefox/defaults/pref/all-ubuntumate.js
prefs.js
Profiles: Profile0 (Default) - LastVersion=48.0/20160728202151 (In use)
RelatedPackageVersions:
google-talkplugin 5.41.0.0-1
icedtea-8-plugin 1.6.2-3ubuntu1
gnome-shell 3.20.3-1ubuntu2
rhythmbox-mozilla 3.4.1-1ubuntu1
browser-plugin-evince 3.22.0-0ubuntu1
RunningIncompatibleAddons: True
SourcePackage: firefox
SubmittedCrashIDs: bp-02582fc4-8633-4d4a-86cb-814af2140429
UpgradeStatus: Upgraded to yakkety on 2016-09-23 (2 days ago)
dmi.bios.date: 12/14/2011
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 03QB
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 300E4Z/300E5Z/300E7Z
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr03QB:bd12/14/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pn300E4Z/300E5Z/300E7Z:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn300E4Z/300E5Z/300E7Z:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 300E4Z/300E5Z/300E7Z
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
Status changed to 'Confirmed' because the bug affects multiple users.