Public bug reported:
This is on a Fresh install of unbuntu 14.04.3 64 bit from iso.
Then, using the Ubuntu Software Center, installed the Xubuntu Desktop
System.
The OS is installed in VMWare Workstation 12, with vmware tools from the
VMWare distribution (not open vm tools).
At first it runs fine. After a random time frame (sometimes 2 minutes,
sometimes several hours), the response to mouse selection becomes slow.
Clicking a menu item, for example, takes 3 or 4 seconds to get a
response. Then, it escalates until the system is unresponsive.
Repeated the process several times - fresh install of Ubuntu, then
Xubuntu desktop (once I figured out that this wasn't anything else - I
was trying to setup an Eclipse/ADT/Java/Android development system in 64
bits).
I downloaded the Xubuntu 14.04.3 ISO, did a fresh install of that, and
it's fine.
I have Ubuntu 12.04 in both 32 and 64 bit installations, both are fine
using LXDE (they are my previous/working Android development machines,
all VMWare workstation VM's).
It appears that a fresh install of Xubuntu 14.04.3 works fine.
The problem appears to be installing the Xubuntu desktop into a running
Ubuntu (standard Unity) machine.
For a while (a few days) I though it was Eclipse (Luna/Mars/Juno) or
Java (which Eclipse requires), but a fresh attempt revealed the issue
appears with no additional applications installed (tried to narrow this
down).
The Xubuntu installation (that is, from the Xubuntu ISO, not the Ubuntu
with XFCE installed) has no problem running Eclipse (for days the
system is fine).
I did not try an installation of XFCE from any other source on Ubuntu.
Note that the CPU usage is not an issue. The CPU is quiet when the
problem occurs. It appears that one can control applications in a
terminal emulator which perform at reasonable speeds (as expected) even
though the system in not responsive to mouse operation. The cursor moves
without incident, but clicks get no response for long delays (seconds,
and increasing over time until it seems the OS is stuck completely).
Further, attempting to move windows around, or resize, becomes
impossible. The cursor SHAPE, on the other hand, may get stuck - that
is, some mouse over switches the cursor to the hand, but never returns
to the standard arrow, but moves just fine, but scrollbars, menu items,
moving or resize windows - all are very slow or all but stop
functioning.
Atl-TAB to switch windows still works as long as the delay in mouse
response is within about 10 seconds of a click, but eventually that
stops functioning and keyboard input becomes compromised.
Booting the same OS into a Unity desktop session seems to work ok. The
problem does not appear there.
Further, the host operating system operates normally throughout these
incidents. Other VM's running Ubuntu 12 (32 and 64 bit at the same time)
are fine, too. No other VM's are having problems, including VM's of
other operating systems like Windows 7 and 8.
The host is Windows 8.1, 32 Gbytes RAM, Intel Corei7 @ 4 Ghz HT enabled,
HPET fully enabled (both Bios and OS).
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.7
ProcVersionSignature: Ubuntu 3.19.0-30.34~14.04.1-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.15
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: XFCE
Date: Fri Oct 9 17:38:58 2015
InstallationDate: Installed on 2015-10-06 (3 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubuntu-release-upgrader (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug dist-upgrade third-party-packages trusty
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https://bugs.launchpad.net/bugs/1504684
Title:
Installing XFCE on Ubuntu eventually makes system crawl/stop
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