** Description changed:

  I have run into major system freezes and other problems booting
  Ubuntu/Xubuntu 15.10 on my laptop (Inspiron 1012).
  
  Xubuntu 15.04 works fine on this laptop. Xubuntu/Ubuntu 15.10 have issues 
when installed directly on this laptop.
  Ubuntu 15.10 works fine on my other computer, an Inspiron 518 desktop w/ AMD 
graphics, (using the same hard drive) but the OS has issues when the hard drive 
is transplanted to this computer.
  ---
  Specific experiences below.
  
  I'll start by describing my experience with Xubuntu 15.10:
  
  ~What works with Xubuntu 15.10:
  
- * Booting into a non-up-to-date install of 15.10 works fine. Installing
- from the USB installer, keeping packages exactly as they are on the
- installer, I get no issues. As soon as I update my packages and reboot,
- I get the problems described below.
+ * First boot works fine. (However, As soon as I reboot, the systemd
+ option gets stuck before the boot screen.)
  
  * "Upstart" boot option in advanced options in GRUB sort of works, after
  updating packages. (but I can't join a wifi network after boot, and I
- get strange systemd-related errors when doing certain things, including
- joining a wifi network.)
+ get strange systemd-related or inadequate permissions errors when doing
+ certain things, including joining a wifi network or trying to mount
+ partitions.)
+ 
+ * Recovery mode lets me drop to command line, but other actions result
+ in a freeze.
  
  ~What doesn't work with Xubuntu 15.10:
  
  * default "systemd" boot option (freezes up before login screen. Strange
  errors. Ctrl+Alt+Del does nothing at this point. Ctrl+Alt+PrntScr + R -
  E - I - S - U - B does nothing. I have to press and hold power button to
- get out of the frozen/bugged boot sequence)
+ get out of the frozen/bugged boot sequence) (applies to second boot and
+ onwards)
  
- * recovery mode (boots into the recover screen. Trying to activate
- networking results in strange errors, and an unescapable system freeze.
- trying to do an fsck results in an unescapable system freeze. Pressing
- "resume" to continue booting results in errors and a freeze.)
+ * recovery mode (boots successfully into the recover screen. Trying to
+ activate networking results in strange errors, and an unescapable system
+ freeze. trying to do an fsck results in an unescapable system freeze.
+ Pressing "resume" to continue booting results in errors and a freeze.)
  
  ---
  
  My experience with Ubuntu 15.10 is different. I got issues even without
  updating my packages.
  
- ~What works/fails with Ubuntu 15.10 (after transplanting hard-drive, and
- installing on Inspiron 518 desktop w/ AMD graphics):
+ ~What works/fails with Ubuntu 15.10 (after installing on Inspiron 518
+ desktop w/ AMD graphics, then transplanting hard-drive to Inspiron 1012
+ laptop):
  
  * either systemd or upstart session gets to the login screen, plays the
  "bongos" startup sound... then system immediately freezes and has to be
  shut down via holding the power button.
  
- * "recovery mode" has errors when trying to activate networking, then
- system freezes up.
+ * "recovery mode" allows drop to command line (anything else results in
+ a freeze.)
  
  ~What doesn't work with Ubuntu 15.10 (after using the net installer on
  Inspiron 1012 laptop) :
  
  * systemd or upstart session freeze before any GUI shows up
  
- * recovery mode seems to work, but it seems I somehow did not install
- the ubuntu-desktop and related packages, so I have a core system. Unsure
- how to join a network via command line.
+ * recovery mode allows drop to command line, but everything else causes
+ freezes.
  
  Very hard for me to know what the exact issue is. But I wanted to report
  this major boot issue, so there is some chance of finding the cause and
  fixing it. I am able to do further troubleshooting if asked.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: ubuntu-release-upgrader-core 1:15.04.14.3
  ProcVersionSignature: Ubuntu 3.19.0-33.38-generic 3.19.8-ckt7
  Uname: Linux 3.19.0-33-generic i686
  ApportVersion: 2.17.2-0ubuntu1.7
  Architecture: i386
  CrashDB: ubuntu
  CurrentDesktop: XFCE
  Date: Sat Nov 14 16:12:48 2015
  InstallationDate: Installed on 2015-11-14 (0 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release i386 (20150422.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: release-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/1516314

Title:
  Ubuntu/Xubuntu 15.10 do not boot succcessfully on Inspiron 1012

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