https://bugzilla.kernel.org/show_bug.cgi?id=18772

           Summary: intermittent boot failure on Acer Aspire 5735Z
           Product: ACPI
           Version: 2.5
    Kernel Version: 2.6.35
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: [email protected]
        ReportedBy: [email protected]
        Regression: No


I am running Debian 64bit and have had intermittent problems with booting.

Initially (Aug 2010) I was running 2.6.32-15 kernel from Debian Squeeze. Please
see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=591622 for details of my
but report to Debian. I am reporting the bug here, following the advice I got
there.

The problem was that about half the time the system would not boot unless I
removed power and battery to force a reset. The fan would spin up and disk
light go on and off briefly, but no messages on the display.

Following recommendation from that bug report, I upgraded to kernel
2.6.35-trunk-amd64. The failures continued but a little less often.

Recently I installed updates, including update of ACPI packages (I don't recall
the details and don't know how to look them up - sorry). Now the problem is
much worse. I have to remove all power at most, but not all, reboots.

If I disable ACPI, I don't have any problem with reboots.

No doubt you will need more information to isolate the fault. I would be
pleased to provide any information if you tell me how to find it.

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