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  1. #1
    OK, I've now tried it 3 times and am convinced it is not a RAM problem:
    I boot my new PC from USB-drive and automatically Memtest86+ (4.20) is started; I decided to let it run for a night and switch my monitor off.

    When I come back to check the results, I switch my monitor on:
    - Memtest86+ hangs, wallclock timer is frozen
    - No errors in memory reported
    - The '+' in 'Memtest86+' still flashes, as does the cursor, so it is not a frozen display
    - The time the wallclock timer displays matches the runtime since I started testing. So when I started at 11:00pm and check the next morning on 06:00am, it will show a wallclock time of 7 hours. Next time I only ran for 3 hours (frozen wallclock shows 3 hours) and I just ran Memtest86+ for over 20 hours - and the wallclock was frozen on 20 hours. Oh, and my RAM is without problems - at least Memtest86+ never reported issues.

    So to me it seems that switching my monitor on causes Memtest86+ to hang. Bug report!

    Specification:
    Motherboard: Intel DH67GD
    CPU: Intel Core i5 2400
    RAM: 4 x 2GB Kingston valueram 1333 DDR3
    Storage: Samsung 830 256GB SSD
    No videocard (using the CPU video)
    Monitor: Dell U2410 connected via DVI on DVI-1 input

    In case it is relevant: I have no problems with this PC, just wanted to be sure my memory was OK. Only problem I have is that occasionally it hangs during boot (Windows logo freezes at random times).

    I've used two USB flashdrives: one was already bootable and I replaced the old memtest86+ with a new precompiled memtest86+ binary; the other I flashed with the auto installer for flashdrives. Both have 4.20 now.

    If I can help out solving this bug by doing tests or providing information - please let me know.
    Last edited by vanaalten; 02/02/2012 at 19h06.

  2. #2
    Additional info:
    I start Memtest86+, immediately press F1. Wait until the wall clock reaches 10 seconds, then switch off monitor. Wait another 10 seconds, switch on monitor. After some power-on delay, I see the wall clock frozen at about 30 seconds.

    And: start Memtest86+, press 'c' for config menu. Can view SPD information without problems. Then switch off/on monitor - and Memtest86+ is frozen again (except for the blinking '+' in the title line).

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