[Bug 306403] Re: System will not POST after reboot since version 7.04

[Nikolas Reist]

** Changed in: acpi-support (Ubuntu)
       Status: New => Opinion

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to acpi-support in Ubuntu.
https://bugs.launchpad.net/bugs/306403

Title:
  System will not POST after reboot since version 7.04

Status in acpi-support package in Ubuntu:
  Opinion

Bug description:
  Procedure:  Rebooting the PC using common methods in the GUI and OS layers.
  Expected Behavior:  Computer restarts and POST's
  Behavior Exhibited:  PC never completes POST automatically and must be hard reset.

  I have been using Ubuntu since version 7.04 (i386 and x86_64) with
  these hardware specifications:

  Biostar NF325-A7 (nforce3 based motherboard)
  AMD Athlon 64 3400+
  1024 MB of ram (recently updated to 2048 MB)
  nVidia Geforce 7600 GS AGP 3.0
  Seagate SATA 320 GB 3 GB/S (clocked down to 1.5)
  Sony DVDRW

  With each version I have the same issue (and have also experienced it
  in Vista x64 which was resolved by one of their updates).  When I
  click Restart, use sudo shutdown -r now, and/or disable splash options
  on the grub boot line the system will run the restart procedure, the
  PC will momentarily cut the power to the systemboard and behave like
  it is restarting.  However, my screen will display a message that it
  isn't receiving signal from the video card, and I must manually
  restart it with the reset button (regardless of nv or nvidia module).
  The shutdown routine does not seem to be effected, because it shuts
  down normally.

  I have recently tried the "acpi=off" option to the grub boot sequence
  and this solves the reboot issue, but then the system does not run the
  shutdown routine properly.  It will attempt to shutdown the system,
  then when the splash screen goes away, I am stuck with a black screen
  with a blinking cursor and no power cycling.  At this point I have to
  manually shut the computer down.  I was starting to think that perhaps
  it was a motherboard and/or memory issue.  I have run memtest
  consecutively on both the original 1024 MB (2 x 512), and the new 2048
  MB (2 x 1024) ddr1 memory and there were no issues.  I have also tried
  different architectures and it seems the issue is not architecture
  specific.

  So I tried other distributions and found that DreamLinux, OpenSuSE
  11.0, and Debian Stable 4 all power down and restart the machine
  properly.  This leads me to believe there is a problem somewhere in
  the software handling of ACPI or some other kernel support.  I have
  attached lspci, dmesg, dmidecode, and lsmod outputs for both supported
  Ubuntu versions and OpenSuSE for comparison.  Let me know if there is
  anything else you require.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/acpi-support/+bug/306403/+subscriptions