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Thread: Boot hangs at "Refined TSC clocksource calibration" on Dell Precision T1650

  1. #1
    Join Date
    Feb 2014
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    3

    Boot hangs at "Refined TSC clocksource calibration" on Dell Precision T1650

    Fresh install of Ubuntu 12.04: live USB boots and works perfectly fine, but booting (in recovery mode) after installer finishes consistently results in boot to hang at:

    ACPI: Requesting acpi_cpufreq
    Refined TSC clocksource calibration: <XX> MHz
    Switching to clocksource tsc

    I've tried all kinds of clocksource= boot options, all resulting in the same behaviour (jiffies, acpi_pm) or a kernel panic (hpet). acpi=off also results in kernel panic. notsc removes the latter two clocksource lines, but booting still hangs at the same place.

    During installation, I tried both "Install updates while installing" enabled and disabled. Tried with Ubuntu 12.04 and Ubuntu 13.10 with exactly the same results. Tried on two (identical) machines.

    Hardware:

    Dell Precision T1650
    Intel Xeon CPU E3-1225 V2 @ 3.20GHz (current clock speed)
    NVIDIA NVS 300
    BIOS Version: A12 (Default settings; Legacy boot)

    According to the ubuntu website, this should work just fine:
    http://www.ubuntu.com/certification/.../201201-10376/
    Related thread:
    http://ubuntuforums.org/showthread.php?t=1040026

    Any ideas?
    Last edited by Martijn_van_der_Ve; February 11th, 2014 at 12:07 PM.

  2. #2
    Join Date
    Feb 2014
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    3

    Re: Boot hangs at "Refined TSC clocksource calibration" on Dell Precision T1650

    Anyone? There must be a solution for this if this particular hardware is listed as "working" on the official ubuntu website.

    In case it is of any help, Boot repair (https://help.ubuntu.com/community/Boot-Repair) returns:
    http://paste.ubuntu.com/6919090/
    Last edited by Martijn_van_der_Ve; February 12th, 2014 at 10:45 AM.

  3. #3
    Join Date
    Feb 2014
    Beans
    3

    Re: Boot hangs at "Refined TSC clocksource calibration" on Dell Precision T1650

    OK Solved! Seems to be an UEFI issue.

    For reference:
    First of all, needed to boot LiveUSB in UEFI mode (boot menu -> choose one that says UEFI <your usb device>); you might need to use a recent disk creator. Then, do normal install, which will be in UEFI mode. When restarting, set the default boot mode to UEFI (here: F12). Ubuntu now starts normally.

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